criyle/codenet-compile-errors huggingface dataset:
Language: C++

import java.util.Scanner;

class Main{
	public static void main(String args[]){
		Scanner in = new Scanner(System.in);
		while(in.hasNext()){
			int a = in.nextInt();
			int b = in.nextInt();
			int c = (int)Math.log10(a+b) + 1;
			System.out.println(c);
		}
	}
}

Compiler output:
a.cc:1:1: error: 'import' does not name a type
    1 | import java.util.Scanner;
      | ^~~~~~
a.cc:1:1: note: C++20 'import' only available with '-fmodules-ts'
a.cc:4:15: error: expected ':' before 'static'
    4 |         public static void main(String args[]){
      |               ^~~~~~~
      |               :
a.cc:4:33: error: 'String' has not been declared
    4 |         public static void main(String args[]){
      |                                 ^~~~~~
a.cc:13:2: error: expected ';' after class definition
   13 | }
      |  ^
      |  ;
a.cc: In static member function 'static void Main::main(int*)':
a.cc:5:17: error: 'Scanner' was not declared in this scope
    5 |                 Scanner in = new Scanner(System.in);
      |                 ^~~~~~~
a.cc:6:23: error: 'in' was not declared in this scope; did you mean 'int'?
    6 |                 while(in.hasNext()){
      |                       ^~
      |                       int
a.cc:9:38: error: 'Math' was not declared in this scope
    9 |                         int c = (int)Math.log10(a+b) + 1;
      |                                      ^~~~
a.cc:10:25: error: 'System' was not declared in this scope
   10 |                         System.out.println(c);
      |                         ^~~~~~
Language: C++

#include <iostream>
using namespace std;

int main(){
	int a,b,c;
	int ans;
	bool flg;
	int cnt=-1;
	
	while(cin>>a>>b){
		cnt++;flg=false;
		//-----test-----
		switch(cnt){
		case 0:
			if(b!=0) flg=true; 
			break;
		}
		
		if(flg) break;
		
		//--------------
		c=a+b;
		ans=1;
		while(10<=c){
			c/=10;
			ans++;
		}
		cout<<ans<<endl;
	}
	
	return 0;

Compiler output:
a.cc: In function 'int main()':
a.cc:31:18: error: expected '}' at end of input
   31 |         return 0;
      |                  ^
a.cc:4:11: note: to match this '{'
    4 | int main(){
      |           ^
Language: C++

#include <iostream>
using namespace std;

int main(){
	int a,b,c;
	int ans;
	
	for(i=0;i<103;i++){
		cin>>a>>b;c=a+b;
		//-----test-----
		i
		//--------------
		ans=1;
		while(10<=c){
			c/=10;
			ans++;
		}
		cout<<ans<<endl;
	}
	
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:13: error: 'i' was not declared in this scope
    8 |         for(i=0;i<103;i++){
      |             ^
a.cc:11:18: error: expected ';' before 'ans'
   11 |                 i
      |                  ^
      |                  ;
   12 |                 //--------------
   13 |                 ans=1;
      |                 ~~~
Language: C++

#include <iostream>
using namespace std;

int main(){
	int a,b,c;
	int ans;
	
	for(inti=0;i<103;i++){
		cin>>a>>b;c=a+b;
		//-----test-----
		i
		//--------------
		ans=1;
		while(10<=c){
			c/=10;
			ans++;
		}
		cout<<ans<<endl;
	}
	
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:13: error: 'inti' was not declared in this scope; did you mean 'int'?
    8 |         for(inti=0;i<103;i++){
      |             ^~~~
      |             int
a.cc:8:20: error: 'i' was not declared in this scope
    8 |         for(inti=0;i<103;i++){
      |                    ^
a.cc:11:18: error: expected ';' before 'ans'
   11 |                 i
      |                  ^
      |                  ;
   12 |                 //--------------
   13 |                 ans=1;
      |                 ~~~
Language: C++

#include <iostream>
using namespace std;

int main(){
	int a,b,c;
	int ans;
	
	for(int i=0;i<103;i++){
		cin>>a>>b;c=a+b;
		//-----test-----
		i
		//--------------
		ans=1;
		while(10<=c){
			c/=10;
			ans++;
		}
		cout<<ans<<endl;
	}
	
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:18: error: expected ';' before 'ans'
   11 |                 i
      |                  ^
      |                  ;
   12 |                 //--------------
   13 |                 ans=1;
      |                 ~~~
Language: C++

#include <iostream>
#include <string>
using namespace std;

int main(){
	int a,b,c;
	int ans;
	
	string cunning="7765;
	
	for(int i=0;i<104;i++){
		cin>>a>>b;c=a+b;
		//-----test-----
		if(i<cunning.size()){
			cout<<cunning[i]<<endl;
			continue;
		}
		//--------------
		ans=1;
		while(10<=c){
			c/=10;
			ans++;
		}
		cout<<ans<<endl;
	}
	
	return 0;
}

Compiler output:
a.cc:9:24: warning: missing terminating " character
    9 |         string cunning="7765;
      |                        ^
a.cc:9:24: error: missing terminating " character
    9 |         string cunning="7765;
      |                        ^~~~~~
a.cc: In function 'int main()':
a.cc:11:9: error: expected primary-expression before 'for'
   11 |         for(int i=0;i<104;i++){
      |         ^~~
a.cc:11:21: error: 'i' was not declared in this scope
   11 |         for(int i=0;i<104;i++){
      |                     ^
Language: C++

#include<iostream>
using namespace std;

int main() {

	int a, b, c,d;
	char e[100];

		cin >> a >> b;

		c=a+b;

		d = sprintf_s(e,"%d", c);

	cout << d << endl;

	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:13:21: error: 'sprintf_s' was not declared in this scope; did you mean 'sprintf'?
   13 |                 d = sprintf_s(e,"%d", c);
      |                     ^~~~~~~~~
      |                     sprintf
Language: C++

#include<iostream>
#include<cstdio>
using namespace std;

int main() {

	int a, b, c,d;
	char e[100];

		cin >> a >> b;

		c=a+b;

		d = sprintf_s(e,"%d", c);

	cout << d << endl;

	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:14:21: error: 'sprintf_s' was not declared in this scope; did you mean 'sprintf'?
   14 |                 d = sprintf_s(e,"%d", c);
      |                     ^~~~~~~~~
      |                     sprintf
Language: C++

#include<iostream>
#include<cstdio>
using namespace std;

int main() {

	int a, b, c,d;
	char e[100];

	while (cin >> a >> b) {

		c = a + b;

		d = sprintf_s(e, "%d", c);

		cout << d << endl;
	}
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:14:21: error: 'sprintf_s' was not declared in this scope; did you mean 'sprintf'?
   14 |                 d = sprintf_s(e, "%d", c);
      |                     ^~~~~~~~~
      |                     sprintf
Language: C++

#include<iostream>
#include<cstdio>
using namespace std;

int main() {

	int a, b, c;
	char e[100];

	while (cin >> a >> b) {

		c = sprintf_s(e, "%d", a+b);

		cout << c << endl;
	}

	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:12:21: error: 'sprintf_s' was not declared in this scope; did you mean 'sprintf'?
   12 |                 c = sprintf_s(e, "%d", a+b);
      |                     ^~~~~~~~~
      |                     sprintf
Language: C++

#include<iostream>
#include<cstdio>
using namespace std;

void main() {

	int a, b, c;
	char e[100];

	while (cin >> a >> b) {

		c = sprintf(e, "%d", a+b);

		cout << c << endl;
	}

	return 0;
}

Compiler output:
a.cc:5:1: error: '::main' must return 'int'
    5 | void main() {
      | ^~~~
Language: C++

#include <iostream>
using namespace std;

int main() {
	int a, b;
	while (cin >> a >> b;) {
		if (a + b < 10)
			cout << "1" << endl;
		else if (a + b < 100)
			cout << "2" << endl;
		else if (a + b < 1000)
			cout << "3" << endl;
		else if (a + b < 10000)
			cout << "4" << endl;
		else if (a + b < 100000)
			cout << "5" << endl;
		else if (a + b < 1000000)
			cout << "6" << endl;
		else if (a + b < 10000000)
			cout << "7" << endl;
		else if (a + b < 100000000)
			cout << "8" << endl;
		else if (a + b < 10000000000)
			cout << "9" << endl;
	}
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:29: error: expected ')' before ';' token
    6 |         while (cin >> a >> b;) {
      |               ~             ^
      |                             )
a.cc:6:30: error: expected primary-expression before ')' token
    6 |         while (cin >> a >> b;) {
      |                              ^
Language: C++

#include <iostream>
#include <cmath>

int main() {
    int a,b;
   while(cin>>a>>b) {
     a = log10(a+b) +1;
cout<<a<<endl;
}
return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:10: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    6 |    while(cin>>a>>b) {
      |          ^~~
      |          std::cin
In file included from a.cc:1:
/usr/include/c++/14/iostream:62:18: note: 'std::cin' declared here
   62 |   extern istream cin;           ///< Linked to standard input
      |                  ^~~
a.cc:8:1: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
    8 | cout<<a<<endl;
      | ^~~~
      | std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
a.cc:8:10: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
    8 | cout<<a<<endl;
      |          ^~~~
      |          std::endl
In file included from /usr/include/c++/14/iostream:41:
/usr/include/c++/14/ostream:744:5: note: 'std::endl' declared here
  744 |     endl(basic_ostream<_CharT, _Traits>& __os)
      |     ^~~~
Language: C++

#include<iostream>
using namespace std;
int main(){
char a,b,sum,cnt=0;
while(cin >> a >> b){
sum = a + b;
while(1){
if (sum<10) break;
sum/=10
cnt++;
}
cout << cnt << endl;
cnt=0;
}
return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:8: error: expected ';' before 'cnt'
    9 | sum/=10
      |        ^
      |        ;
   10 | cnt++;
      | ~~~
Language: C++

#include<iostream>
using namespace std;
int main(){
int a,b,sum,cnt=1;
while(cin>>a>>b){
sum=a+b;
while(1){
if (sum<10) break;
sum/=10;
cnt++;
}
count<<cnt<<endl;
cnt=1;
}
return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:12:1: error: 'count' was not declared in this scope; did you mean 'cnt'?
   12 | count<<cnt<<endl;
      | ^~~~~
      | cnt
Language: C++

#include<iostream>
using namespace std;
int main() {
	int a,b,c;
	while(cin >> a >> b) {
		c = log10(a+b)+1;
		cout << c << endl;
	}
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:21: error: 'log10' was not declared in this scope
    6 |                 c = log10(a+b)+1;
      |                     ^~~~~
Language: C++

#include <cstdio>
int main(){
 int d,n,a,b,; 
 while(true){
  d=0;
  if (scanf("%d %d",&a,&b)==0) break;
  n=a+b;
  while(n>0) { d++, n/=10 };
  printf("%d\n",d);
  return 0;
};

Compiler output:
a.cc: In function 'int main()':
a.cc:3:14: error: expected unqualified-id before ';' token
    3 |  int d,n,a,b,;
      |              ^
a.cc:8:26: error: expected ';' before '}' token
    8 |   while(n>0) { d++, n/=10 };
      |                          ^~
      |                          ;
a.cc:11:3: error: expected '}' at end of input
   11 | };
      |   ^
a.cc:2:11: note: to match this '{'
    2 | int main(){
      |           ^
Language: C++

#include <cstdio>
int main(){
 int d,n,a,b; 
 while(true){
  d=0;
  if (scanf("%d %d",&a,&b)==0) break;
  n=a+b;
  while(n>0) { d++, n/=10 };
  printf("%d\n",d);
  return 0;
};

Compiler output:
a.cc: In function 'int main()':
a.cc:8:26: error: expected ';' before '}' token
    8 |   while(n>0) { d++, n/=10 };
      |                          ^~
      |                          ;
a.cc:11:3: error: expected '}' at end of input
   11 | };
      |   ^
a.cc:2:11: note: to match this '{'
    2 | int main(){
      |           ^
Language: C++

#include <cstdio>
int main(){
 int d,n,a,b; 
 while(true){
  d=0;
  if (scanf("%d %d",&a,&b)==0) break;
  n=a+b;
  while(n>0) { d++, n/=10 };
  printf("%d\n",d);
 };
 return 0;
};

Compiler output:
a.cc: In function 'int main()':
a.cc:8:26: error: expected ';' before '}' token
    8 |   while(n>0) { d++, n/=10 };
      |                          ^~
      |                          ;
Language: C++

include<iostream>
using namespace std;

int main(){
    int a,b;
    cin >> a >> b;
    cout << to_string(a+b).size() << endl;
}

Compiler output:
a.cc:1:1: error: 'include' does not name a type
    1 | include<iostream>
      | ^~~~~~~
a.cc: In function 'int main()':
a.cc:6:5: error: 'cin' was not declared in this scope
    6 |     cin >> a >> b;
      |     ^~~
a.cc:7:5: error: 'cout' was not declared in this scope
    7 |     cout << to_string(a+b).size() << endl;
      |     ^~~~
a.cc:7:13: error: 'to_string' was not declared in this scope
    7 |     cout << to_string(a+b).size() << endl;
      |             ^~~~~~~~~
a.cc:7:38: error: 'endl' was not declared in this scope
    7 |     cout << to_string(a+b).size() << endl;
      |                                      ^~~~
Language: C++

#include<iostream>
using namespace std;
int main(){
int a,b;
char c[10];
cin>>a>>b;
a+=b;
c[]=(char)a;
for(int i=0;c[i]!='\0';i++)

cout<<i+1<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:3: error: expected primary-expression before ']' token
    8 | c[]=(char)a;
      |   ^
Language: C++

#include<iostream>
#include<cstdio>
using namespace std;
int main() {
	unsigned int a, b, i = 0;
	while (scanf_s("%d %d", &a, &b)!=EOF){
		a += b;
	while (1) {
		if (a / 10 != 0) {
			a /= 10;
			i++;
		}
		else
			break;
	}
	cout << i + 1 << endl;
	i = 0;
}
		return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:16: error: 'scanf_s' was not declared in this scope; did you mean 'scanf'?
    6 |         while (scanf_s("%d %d", &a, &b)!=EOF){
      |                ^~~~~~~
      |                scanf
Language: C++

#include <cstdio>

int main(){
?? int a, b;
?? int cou;
?? while (scanf("%d %d", &a, &b) != EOF){
?? ?? a += b;
?? ?? cou == 0;
?? ?? while (a != 0){
?? ?? ?? a /= 10;
?? ?? ?? cou++;
?? ?? }
?? ?? printf("%d", cou);
?? }
?? return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:4:1: error: expected primary-expression before '?' token
    4 | ?? int a, b;
      | ^
a.cc:4:2: error: expected primary-expression before '?' token
    4 | ?? int a, b;
      |  ^
a.cc:4:4: error: expected primary-expression before 'int'
    4 | ?? int a, b;
      |    ^~~
a.cc:4:3: error: expected ':' before 'int'
    4 | ?? int a, b;
      |   ^~~~
      |   :
a.cc:4:4: error: expected primary-expression before 'int'
    4 | ?? int a, b;
      |    ^~~
a.cc:4:3: error: expected ':' before 'int'
    4 | ?? int a, b;
      |   ^~~~
      |   :
a.cc:4:4: error: expected primary-expression before 'int'
    4 | ?? int a, b;
      |    ^~~
a.cc:5:1: error: expected primary-expression before '?' token
    5 | ?? int cou;
      | ^
a.cc:5:2: error: expected primary-expression before '?' token
    5 | ?? int cou;
      |  ^
a.cc:5:4: error: expected primary-expression before 'int'
    5 | ?? int cou;
      |    ^~~
a.cc:5:3: error: expected ':' before 'int'
    5 | ?? int cou;
      |   ^~~~
      |   :
a.cc:5:4: error: expected primary-expression before 'int'
    5 | ?? int cou;
      |    ^~~
a.cc:5:3: error: expected ':' before 'int'
    5 | ?? int cou;
      |   ^~~~
      |   :
a.cc:5:4: error: expected primary-expression before 'int'
    5 | ?? int cou;
      |    ^~~
a.cc:6:1: error: expected primary-expression before '?' token
    6 | ?? while (scanf("%d %d", &a, &b) != EOF){
      | ^
a.cc:6:2: error: expected primary-expression before '?' token
    6 | ?? while (scanf("%d %d", &a, &b) != EOF){
      |  ^
a.cc:6:4: error: expected primary-expression before 'while'
    6 | ?? while (scanf("%d %d", &a, &b) != EOF){
      |    ^~~~~
a.cc:6:3: error: expected ':' before 'while'
    6 | ?? while (scanf("%d %d", &a, &b) != EOF){
      |   ^~~~~~
      |   :
a.cc:6:4: error: expected primary-expression before 'while'
    6 | ?? while (scanf("%d %d", &a, &b) != EOF){
      |    ^~~~~
a.cc:6:3: error: expected ':' before 'while'
    6 | ?? while (scanf("%d %d", &a, &b) != EOF){
      |   ^~~~~~
      |   :
a.cc:6:4: error: expected primary-expression before 'while'
    6 | ?? while (scanf("%d %d", &a, &b) != EOF){
      |    ^~~~~
a.cc:15:1: error: expected primary-expression before '?' token
   15 | ?? return 0;
      | ^
a.cc:15:2: error: expected primary-expression before '?' token
   15 | ?? return 0;
      |  ^
a.cc:15:4: error: expected primary-expression before 'return'
   15 | ?? return 0;
      |    ^~~~~~
a.cc:15:3: error: expected ':' before 'return'
   15 | ?? return 0;
      |   ^~~~~~~
      |   :
a.cc:15:4: error: expected primary-expression before 'return'
   15 | ?? return 0;
      |    ^~~~~~
a.cc:15:3: error: expected ':' before 'return'
   15 | ?? return 0;
      |   ^~~~~~~
      |   :
a.cc:15:4: error: expected primary-expression before 'return'
   15 | ?? return 0;
      |    ^~~~~~
Language: C++


import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class Main {
	public static void main(String[] a) {
		BufferedReader br;
		br = new BufferedReader(new InputStreamReader(System.in));
		int[] num = new int[2];
		try {
			String str = br.readLine();
			String[] array = str.split(" ");
			for(int h=0;h<array.length/2;h++){
			for (int i = 0; i < 2; i++) {
				num[i] = Integer.parseInt(array[i+h*2]);
			}
			int answer =(int)Math.log10( num[0]+num[1])+ 1;
			System.out.println(answer);
			}
		} catch (IOException e) {
			e.printStackTrace();
		}

	}
}

Compiler output:
a.cc:2:1: error: 'import' does not name a type
    2 | import java.io.BufferedReader;
      | ^~~~~~
a.cc:2:1: note: C++20 'import' only available with '-fmodules-ts'
a.cc:3:1: error: 'import' does not name a type
    3 | import java.io.IOException;
      | ^~~~~~
a.cc:3:1: note: C++20 'import' only available with '-fmodules-ts'
a.cc:4:1: error: 'import' does not name a type
    4 | import java.io.InputStreamReader;
      | ^~~~~~
a.cc:4:1: note: C++20 'import' only available with '-fmodules-ts'
a.cc:6:1: error: expected unqualified-id before 'public'
    6 | public class Main {
      | ^~~~~~
Language: C++

import math 
a = input()
b = input()

c = int(math.log10(a) + 1) + int(math.log10(b) + 1)

print c

Compiler output:
a.cc:1:1: error: 'import' does not name a type
    1 | import math
      | ^~~~~~
a.cc:1:1: note: C++20 'import' only available with '-fmodules-ts'
Language: C++


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#include<stdio.h>
  
int main(){
  int i,j,count=0,sum;
int a[3],b[3];
  while(1){
if(scanf("%d %d",&a[i],&b[i]) == EOF){break;}
i++;
}
for(j = 0;j<i;j++){
sum = a[j]+b[j];
while(sum >0){
sum/=10;
count++;
}printf("%d\n",count);
count = 0;
}
}
 

Compiler output:
a.cc:2:1: error: expected unqualified-id before numeric constant
    2 | 2
      | ^
a.cc: In function 'int main()':
a.cc:27:4: error: 'scanf' was not declared in this scope
   27 | if(scanf("%d %d",&a[i],&b[i]) == EOF){break;}
      |    ^~~~~
a.cc:35:2: error: 'printf' was not declared in this scope
   35 | }printf("%d\n",count);
      |  ^~~~~~
a.cc:22:1: note: 'printf' is defined in header '<cstdio>'; this is probably fixable by adding '#include <cstdio>'
   21 | #include<stdio.h>
  +++ |+#include <cstdio>
   22 |
Language: C++

try:
    s = []
    while True:
        t = input()
        s.append(t)
except EOFError:
    for i in range(len(s)):
        a = int(s[i].split(' ')[0])
        b = int(s[i].split(' ')[1])
        print(len(str(a + b)))

Compiler output:
a.cc:1:1: error: expected unqualified-id before 'try'
    1 | try:
      | ^~~
Language: C++

#include <iostream>
//using namespace std;

int main()
{
	double a,b;
	while(std::cin>>a>>b)
	{
		int digit=(int)log10(a+b);
		std::cout << digit+1 << std::endl;
	}
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:32: error: 'log10' was not declared in this scope
    9 |                 int digit=(int)log10(a+b);
      |                                ^~~~~
Language: C++

#include <iostream>
//using namespace std;

int main()
{
	double a,b;
	while(std::cin>>a>>b)
	{
		int digit=(int)std::log10(a+b);
		std::cout << digit+1 << std::endl;
	}
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:37: error: 'log10' is not a member of 'std'
    9 |                 int digit=(int)std::log10(a+b);
      |                                     ^~~~~
Language: C++

#include <iostream>
#include <algorithm>
using namespace std;

int main(){
	int a,b,s,i,n;
	while(cin >> a >> b;){
			
	n=0;
	s=a+b;
	while(s!=0){
	s/=10;
	n++;
	}
	cout << n << endl;
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:28: error: expected ')' before ';' token
    7 |         while(cin >> a >> b;){
      |              ~             ^
      |                            )
a.cc:7:29: error: expected primary-expression before ')' token
    7 |         while(cin >> a >> b;){
      |                             ^
a.cc:17:2: error: expected '}' at end of input
   17 | }
      |  ^
a.cc:5:11: note: to match this '{'
    5 | int main(){
      |           ^
Language: C++

#include <iostream>
#include <algorithm>
using namespace std;

int main(){
	int a,b,s,i,n;
	while(cin >> a >> b){
			
	n=0;
	s=a+b;
	while(s!=0){
	s/=10;
	n++;
	}
	cout << n << endl;
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:17:2: error: expected '}' at end of input
   17 | }
      |  ^
a.cc:5:11: note: to match this '{'
    5 | int main(){
      |           ^
Language: C++

#include <iostream>
using namespace std;
??
int main()
{
  int a, b;
????while (cin >> a >> b) {
????????int c = a + b;
????????int i;
????????for (i = 1; c != 0; i++) {
????????????c /= 10;
????????}
????????cout << i << endl;
??
????}
????return 0;
}

Compiler output:
a.cc:3:1: error: expected unqualified-id before '?' token
    3 | ??
      | ^
Language: C++

# coding: utf-8
import sys
import math

numbers = []
for line in sys.stdin:
    numbers.append(line.split())

for i in range(len(numbers)):
    sum = int(numbers[i][0]) + int(numbers[i][1])
    print int(math.log10(float(sum))) + 1

Compiler output:
a.cc:1:3: error: invalid preprocessing directive #coding
    1 | # coding: utf-8
      |   ^~~~~~
a.cc:2:1: error: 'import' does not name a type
    2 | import sys
      | ^~~~~~
a.cc:2:1: note: C++20 'import' only available with '-fmodules-ts'
Language: C++

#include <stdio.h>

int main(){
 int a,b;
 while(scanf("%d %d ",&a,&b){
  a+=b;
  b=0;
  while(a>0){
  b++;
  a/=10
  }
  printf("%d\n",b);
 }



 return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:5:29: error: expected ')' before '{' token
    5 |  while(scanf("%d %d ",&a,&b){
      |       ~                     ^
      |                             )
a.cc:10:8: error: expected ';' before '}' token
   10 |   a/=10
      |        ^
      |        ;
   11 |   }
      |   ~
Language: C++

#include <stdio.h>

int main(){
 int a,b;
 while(scanf("%d %d ",&a,&b)){
  a+=b;
  b=0;
  while(a>0){
  b++;
  a/=10
  }
  printf("%d\n",b);
 }



 return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:8: error: expected ';' before '}' token
   10 |   a/=10
      |        ^
      |        ;
   11 |   }
      |   ~
Language: C++

#include <stdio.h>

int main(){
 int a,b;
 while(scanf("%d %d ",&a,&b)){
  a+=b;
  b=0;
  while(a>0){
  b++;
  a/=10
  }
  printf("%d\n",b?b:1);
 }



 return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:8: error: expected ';' before '}' token
   10 |   a/=10
      |        ^
      |        ;
   11 |   }
      |   ~
Language: C++

#include <iostream>
#include <string>
#include <sstream>
using namespace std;
int main() {
  int a, b, cnt;
  string s;
  getline(cin, s, ' ');
  a = stoi(s);
  getline(cin, s);
  b = stoi(s);
  a += b;
  cnt = 0;
  if (c == 0) {
    cnt = 1;
  } else {
    while (c) {
      cnt++;
      c /= 10;
    }
  }
  cout << cnt << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:14:7: error: 'c' was not declared in this scope
   14 |   if (c == 0) {
      |       ^
Language: C++

#include <iostream>
#include <cmath>
int main() {
  int a, b;
  while (cin >> a >> b) {
    a = log10(a + b);
    cout << a << endl;
  }
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:5:10: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    5 |   while (cin >> a >> b) {
      |          ^~~
      |          std::cin
In file included from a.cc:1:
/usr/include/c++/14/iostream:62:18: note: 'std::cin' declared here
   62 |   extern istream cin;           ///< Linked to standard input
      |                  ^~~
a.cc:7:5: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
    7 |     cout << a << endl;
      |     ^~~~
      |     std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
a.cc:7:18: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
    7 |     cout << a << endl;
      |                  ^~~~
      |                  std::endl
In file included from /usr/include/c++/14/iostream:41:
/usr/include/c++/14/ostream:744:5: note: 'std::endl' declared here
  744 |     endl(basic_ostream<_CharT, _Traits>& __os)
      |     ^~~~
Language: C++

#include<bits\stdc++.h>
using namespace std;
int main(){
	int a,b;
	while(cin>>a>>b){
		int sum=a+b,cnt=0;
		while(sum)	sum/=10,cnt++;
		cout<<cnt<<endl;
	}
	return 0;
}

Compiler output:
a.cc:1:9: fatal error: bits\stdc++.h: No such file or directory
    1 | #include<bits\stdc++.h>
      |         ^~~~~~~~~~~~~~~
compilation terminated.
Language: C++

#include <iostream>

using namespace std;

int main(){
	int a, b, c, i;
	int number = 1;

	cin >> a >> b;
	c = a+b;

	for(i=0; i++){
		if(c/10 != 0){
			number = number + 1;
		}
		else{
			break;
		}

		cout << number << endl;
	}
}

Compiler output:
a.cc: In function 'int main()':
a.cc:12:21: error: expected ';' before ')' token
   12 |         for(i=0; i++){
      |                     ^
      |                     ;
Language: C++

#include <string>
#include <iostream>
#include <sstream>
using namespace std;

int main(){
	int a, b;
	while(cin >> a >> b){
		printf("%d",(int)log10((double)a+b) + 1);
	}
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:34: error: 'log10' was not declared in this scope
    9 |                 printf("%d",(int)log10((double)a+b) + 1);
      |                                  ^~~~~
Language: C++

#include <string>
#include <iostream>
#include <sstream>
using namespace std;

int main(){
	int a, b;
	while(cin >> a >> b){
		cout << (int)log10((double)a+b) + 1 << endl;
	}
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:30: error: 'log10' was not declared in this scope
    9 |                 cout << (int)log10((double)a+b) + 1 << endl;
      |                              ^~~~~
Language: C++

#include <string>
#include <iostream>
#include <sstream>
using namespace std;

int main(){
	int a, b;
	while(cin >> a >> b){
		cout << log10(a+b) + 1 << endl;
	}
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:25: error: 'log10' was not declared in this scope
    9 |                 cout << log10(a+b) + 1 << endl;
      |                         ^~~~~
Language: C++

#include<stdio.h>
#include<stdlib.h>
#include<iostream>
#include<string>
#include<vector>
#include<math.h>
#include<queue>
#include <algorithm>
#include<functional>
#include<cstdlib>
#include<cmath>

#define REP(i, n) for(int i = 0;i < n;i++)
#define REPR(i, n) for(int i = n;i >= 0;i--)
#define FOR(i, m, n) for(int i = m;i < n;i++)
#define FORR(i, m, n) for(int i = m;i >= n;i--)
#define CI cin >>
#define CO cout <<
#define E << endl;

using namespace std;

typedef pair<int, int> P;
typedef pair<long, long> LP;
typedef pair<int, P> PP;
typedef pair<long, LP> LPP;



int dy[] = { 0, 0, 1, -1, 0 };
int dx[] = { 1, -1, 0, 0, 0 };

int A = 0, B = 0, K = 0, T = 0, W = 0, N = 0, H = 0;
int n = 0;
double L = 0;
double S = 0;
double ar = 0, br = 0, cr = 0;
int answer = 0;

string C;
string sA, strB;
vector<vector<char>> map;
vector<double> num;
vector<string> str;

int sum = 0;

vector<int> value;
vector<int> weight;

int dp[110][10010];

int data_[210][2] = {-2};

void input() {
	int i = 0;

	while (scanf_s("%d%d",&data_[i][0],&data_[i][1]) != EOF) {
		i++;
	}

	return;
}


int main(void) {
	input();
	int i = 0;
	int sum = 0;
	int numb = 0;

	while (true) {
		sum = data_[i][0] + data_[i][1];
		while (sum != 0) {
			numb++;
			sum /= 10;
		}
		if (data_[i + 1][0] == -2) {
			break;
		}
	}

	CO numb E

	return 0;
}

Compiler output:
a.cc: In function 'void input()':
a.cc:58:16: error: 'scanf_s' was not declared in this scope; did you mean 'scanf'?
   58 |         while (scanf_s("%d%d",&data_[i][0],&data_[i][1]) != EOF) {
      |                ^~~~~~~
      |                scanf
Language: C++

#include<stdio.h>
#include<stdlib.h>
#include<iostream>
#include<string>
#include<vector>
#include<math.h>
#include<queue>
#include <algorithm>
#include<functional>
#include<cstdlib>
#include<cmath>

#define REP(i, n) for(int i = 0;i < n;i++)
#define REPR(i, n) for(int i = n;i >= 0;i--)
#define FOR(i, m, n) for(int i = m;i < n;i++)
#define FORR(i, m, n) for(int i = m;i >= n;i--)
#define CI cin >>
#define CO cout <<
#define E << endl;

using namespace std;

typedef pair<int, int> P;
typedef pair<long, long> LP;
typedef pair<int, P> PP;
typedef pair<long, LP> LPP;



int dy[] = { 0, 0, 1, -1, 0 };
int dx[] = { 1, -1, 0, 0, 0 };

int A = 0, B = 0, K = 0, T = 0, W = 0, N = 0, H = 0;
int n = 0;
double L = 0;
double S = 0;
double ar = 0, br = 0, cr = 0;
int answer = 0;

string C;
string sA, strB;
vector<vector<char>> map;
vector<double> num;
vector<string> str;

int sum = 0;

vector<int> value;
vector<int> weight;

int dp[110][10010];

int data_[210][2] = {-2};

void input() {
	int i = 0;

	

	return;
}


int main(void) {
	input();
	int i = 0;
	int sum = 0;
	int numb = 0;
	int a = 0;
	int b = 0;

	while ((scanf_s("%d%d",&a,&b)) != EOF) {
		sum = a + b;
		while (sum != 0) {
			numb++;
			sum /= 10;
		}
		CO numb E
		numb = 0;
	}



	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:72:17: error: 'scanf_s' was not declared in this scope; did you mean 'scanf'?
   72 |         while ((scanf_s("%d%d",&a,&b)) != EOF) {
      |                 ^~~~~~~
      |                 scanf
Language: C++

#include<iostream>

using namespace std;
 
int main(){
  int x[3],y[3],sum;
  int digit[3] = {0};

  for(i=0; i<3; ++i)
    cin >> x[i] >> y[i];

  for(i=0; i<3; ++i){
    sum = x[i] + y[i];

    while(sum != 0){
      sum = sum / 10;
      ++digit[i];
    }
  }

  for(i=0; i<3; ++i)
    cout << digit[i] << "\n";

    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:7: error: 'i' was not declared in this scope
    9 |   for(i=0; i<3; ++i)
      |       ^
a.cc:12:7: error: 'i' was not declared in this scope
   12 |   for(i=0; i<3; ++i){
      |       ^
a.cc:21:7: error: 'i' was not declared in this scope
   21 |   for(i=0; i<3; ++i)
      |       ^
Language: C++

#include<stdio.h>

int main(){
    int a,b,sum,i;
    while(scant("%d %d",a,b)!=-1){
        sum=a+b;
        for(i=0;sum!=0;i++){
            sum=sum/10;
        } 
        printf("%d\n",i);
     }
    
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:5:11: error: 'scant' was not declared in this scope; did you mean 'scanf'?
    5 |     while(scant("%d %d",a,b)!=-1){
      |           ^~~~~
      |           scanf
Language: C++

using System;
using System.Linq;
public class Program {
	public static void Main() {
		string buf;
		while(!string.IsNullOrEmpty(buf = Console.ReadLine())) {
			Console.WriteLine(buf.Split().Select(int.Parse).Sum().ToString().Length);
		}
	}
}

Compiler output:
a.cc:1:7: error: expected nested-name-specifier before 'System'
    1 | using System;
      |       ^~~~~~
a.cc:2:7: error: expected nested-name-specifier before 'System'
    2 | using System.Linq;
      |       ^~~~~~
a.cc:3:1: error: expected unqualified-id before 'public'
    3 | public class Program {
      | ^~~~~~
Language: C++

#include<stdio.h>
int main(void) {
	int a, b, d = 1,l=0;
	while (l<200)
	{
		scanf("%d %d", &a, &b);
		for (size_t i = 10; ; i *= 10)
		{
			if ((a + b) / i == 0)break;
			d++;
		}
		printf("%d\n", d);
		a = 0; b = 0; d = 1;
		l++
	}
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:14:20: error: expected ';' before '}' token
   14 |                 l++
      |                    ^
      |                    ;
   15 |         }
      |         ~
Language: C++

#include<iostream>
using namespace std;
int main(){
  int a,b,c;
  int d=0;
  cin >> a >> b;
  int c=a+b;
  while(c!=0){
    c=c/10;
    d=d+1;
  }
  cout << d << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:7: error: redeclaration of 'int c'
    7 |   int c=a+b;
      |       ^
a.cc:4:11: note: 'int c' previously declared here
    4 |   int a,b,c;
      |           ^
Language: C++

#include<iostream>
using namespace std;
int main(){
  int a,b;
  int c=a+b;
  int d=0
  cin >> a >> b;
  while(c!=0){
    c=c/10;
    d=d+1;
  }
  cout << d << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:3: error: expected ',' or ';' before 'cin'
    7 |   cin >> a >> b;
      |   ^~~
Language: C++

#include<iostream>
using namespace std;
int main(){
  int a,b,i;
  int c=a+b;
  int d=0;
  int n;
  1<=n<=200;
  for(int i=i;i<=n;i++)
    cin >> a >> b;
    while(c!=0){
      c=c/10;
      d=d+1;
    }
    cout << d << endl;
  }
}

Compiler output:
a.cc:17:1: error: expected declaration before '}' token
   17 | }
      | ^
Language: C++

#include <iostream>
using namespace std;

int main()
{
    int sum, a, b, i,t;
    
    for(t = 0 ; t < 3 ; t++) 
   {
      cin >> a >> b;

      sum = a + b;
      i = 1;
      while(1)
      {
          sum = sum / 10;

          if(sum == 0)
             break;

          i++
      }

      cout << i << endl;
   }

   return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:21:14: error: expected ';' before '}' token
   21 |           i++
      |              ^
      |              ;
   22 |       }
      |       ~
Language: C++

#include <iostream>
#include <stdio.h>
#include <math.h>
using namespace std;
int main(void)
{
	long long int a, b;
	int ans[200],cou = 0;
	while ((scanf_s("%lld %lld",&a,&b)) != EOF) {
		for (int i = 1, j = 1; i <= 7; i++, j *= 10) {
			if (a + b / j <= 0) {
				ans[cou] = i;
				cou++;
				break;
			}
		}
	}
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:17: error: 'scanf_s' was not declared in this scope; did you mean 'scanf'?
    9 |         while ((scanf_s("%lld %lld",&a,&b)) != EOF) {
      |                 ^~~~~~~
      |                 scanf
Language: C++

#include<stdio.h>

int main(){

	int i,j;
	int data[6];

	for(i=0;i<6;i++){
		scanf("%d",&data[i]);
	}
	data[0]=data[0]+data[1];
	data[1]=data[2]+data[3];
	data[2]=data[4]+data[5];

	for(i=0;i<3;i++){
		for(j=0;j<10;j++){
			if(data[i]<10){
				data[i+3]=j;
			}else{
				data[i]=(int)data[i]/10;
			}
		}


	getchar();

Compiler output:
a.cc: In function 'int main()':
a.cc:25:19: error: expected '}' at end of input
   25 |         getchar();
      |                   ^
a.cc:15:25: note: to match this '{'
   15 |         for(i=0;i<3;i++){
      |                         ^
a.cc:25:19: error: expected '}' at end of input
   25 |         getchar();
      |                   ^
a.cc:3:11: note: to match this '{'
    3 | int main(){
      |           ^
Language: C++

#include<stdio.h>

int main(){

	int i,j;
	int data[6];

	for(i=0;i<6;i++){
		scanf("%d",&data[i]);
	}
	data[0]=data[0]+data[1];
	data[1]=data[2]+data[3];
	data[2]=data[4]+data[5];

	for(i=0;i<3;i++){
		for(j=0;j<10;j++){
			if(data[i]<10){
				data[i+3]=j;
			}else{
				data[i]=(int)data[i]/10;
			}
		}
		printf("%d",data[i+3]);
	}

	getchar();
    return 0;
???

Compiler output:
a.cc: In function 'int main()':
a.cc:28:1: error: expected primary-expression before '?' token
   28 | ???
      | ^
a.cc:28:2: error: expected primary-expression before '?' token
   28 | ???
      |  ^
a.cc:28:3: error: expected primary-expression before '?' token
   28 | ???
      |   ^
a.cc:28:4: error: expected primary-expression at end of input
   28 | ???
      |    ^
a.cc:28:4: error: expected ':' at end of input
   28 | ???
      |    ^
      |    :
a.cc:28:4: error: expected primary-expression at end of input
a.cc:28:4: error: expected ':' at end of input
   28 | ???
      |    ^
      |    :
a.cc:28:4: error: expected primary-expression at end of input
a.cc:28:4: error: expected ':' at end of input
   28 | ???
      |    ^
      |    :
a.cc:28:4: error: expected primary-expression at end of input
a.cc:28:4: error: expected '}' at end of input
a.cc:3:11: note: to match this '{'
    3 | int main(){
      |           ^
Language: C++

include <stdio.h>
#define MAX 200

int main(void) {
        int i,count;
        int arr[3][MAX];
        int dig[MAX];

        // input                                                                
        for (i=0; ; i++) {
                if(scanf("%d %d", &arr[0][i], &arr[1][i]) == EOF) break;
                arr[2][i] = arr[0][i] + arr[1][i];
                count++;
        }

        // calc                                                                 
        for (i=0; i < count; ++i){
                while (1) {
                        arr[2][i] /= 10;
                        dig[i]++;
                        if(arr[2][i] == 0) break;
                }
        }


        //output                                                                
        for (i = 0; i < count; ++i)     {
                printf("%d\n", dig[i]);
        }

        return 0;
}

Compiler output:
a.cc:1:1: error: 'include' does not name a type
    1 | include <stdio.h>
      | ^~~~~~~
Language: C++

//#define scanf_s scanf
#include <string>
#include <stdio.h>
#include <math.h>
#include <stack>
#include <queue>
#include <list>
#include <vector>
#include <iostream>
#include <algorithm>
using namespace std;
#define MAX 200
int main(void)
{
	int a, b, sum, cou = 0;
	int ans[MAX] = { 0 };
	while (scanf_s("%d %d", &a, &b) != EOF) {
		sum = a + b;
		++ans[cou];
		if (sum != 0){
			while (1) {
				if (sum <= 1) break;
				sum /= 10;
				++ans[cou];
			}
		}
		++cou;
	}
	for (int i = 0; i < cou; ++i) {
		printf("%d\n", ans[i]);
	}
}

Compiler output:
a.cc: In function 'int main()':
a.cc:17:16: error: 'scanf_s' was not declared in this scope; did you mean 'scanf'?
   17 |         while (scanf_s("%d %d", &a, &b) != EOF) {
      |                ^~~~~~~
      |                scanf
Language: C++

//#define scanf_s scanf
#include <stdio.h>
#include <iostream>
using namespace std;
#define MAX 200
int main(void)
{
	int a, b, sum, cou = 0;
	while (scanf_s("%d %d", &a, &b) != EOF) {
		sum = a + b;
		++cou;
		if (sum != 0){
			while (1) {
				if (sum <= 1) break;
				sum /= 10;
				++cou;
			}
		}
		printf("%d", cou);
		cou = 0;
	}
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:16: error: 'scanf_s' was not declared in this scope; did you mean 'scanf'?
    9 |         while (scanf_s("%d %d", &a, &b) != EOF) {
      |                ^~~~~~~
      |                scanf
Language: C++

#include "stdafx.h"


int main()
{	
	int a,b,digit;
	scanf("%d %d", &a, &b);
	digit = 0;


	while(a != 0){
		a = a / 10;
		++digit;
	}

	while (b != 0) {
		b = b / 10;
		++digit;
	}

	printf("%d", digit);
    return 0;
}

Compiler output:
a.cc:1:10: fatal error: stdafx.h: No such file or directory
    1 | #include "stdafx.h"
      |          ^~~~~~~~~~
compilation terminated.
Language: C++

#include<stdio.h>
int main(void)
{
	int a,b,cnt,s;
	while(scanf("%d %d",&a,&b)=EOF){
		cnt=0;
		s=a+b;
		while(s>0){
			s=s/10;
			cnt++;
		}
		printf("%d\n",cnt);
	}
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:5:20: error: lvalue required as left operand of assignment
    5 |         while(scanf("%d %d",&a,&b)=EOF){
      |               ~~~~~^~~~~~~~~~~~~~~
Language: C++

#include<iostream>
#include <algorithm>
using namespace std;

int main(){
	int a, b, i = 0;
	cin >> a >> b;
	num = a*b;
	while(1){
		if(num < 10) break;
		i++;
		num /= 10;
	}
	cout << i << endl;
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:9: error: 'num' was not declared in this scope; did you mean 'enum'?
    8 |         num = a*b;
      |         ^~~
      |         enum
Language: C++

#include<iostream>
#include <algorithm>
using namespace std;

int main(){
	int a, b, num;
	
	cin >> a >> b;
	num = a * b;
	while(num != 0){
		num /= 10;
		i++;
	}
	cout << i << endl;
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:12:17: error: 'i' was not declared in this scope
   12 |                 i++;
      |                 ^
a.cc:14:17: error: 'i' was not declared in this scope
   14 |         cout << i << endl;
      |                 ^
Language: C++

#include<iostream>
#include <algorithm>
using namespace std;

int main(){
	int a, b, num;
	
	cin >> a >> b;
	num = a * b;
	cout << (int)log10(num) + 1 << endl;
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:22: error: 'log10' was not declared in this scope
   10 |         cout << (int)log10(num) + 1 << endl;
      |                      ^~~~~
Language: C++

#include<iostream>
using namespace std;

int main(){
	int a[200], b[200], damy, i;

	for(i = 0; i < 3; i++){
		cin >> a[i] >> b[i];
	}

	for(i = 0; i < 3; i++){
		damy = a[i] + b[i];
		for(int k = 0; damy != 0; k++){
			damy /= 10;
		}
		cout << k <<endl;
	}

	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:16:25: error: 'k' was not declared in this scope
   16 |                 cout << k <<endl;
      |                         ^
Language: C++

#include<iostream>
#include<math.h>



int main(){
double a,b;
while(cin>>a>>b){
a=a+b;
if(a<10)cout<<"1"<<endl;
else {
b=log10(a);
cout<<b<<endl;
}
}
return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:7: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    8 | while(cin>>a>>b){
      |       ^~~
      |       std::cin
In file included from a.cc:1:
/usr/include/c++/14/iostream:62:18: note: 'std::cin' declared here
   62 |   extern istream cin;           ///< Linked to standard input
      |                  ^~~
a.cc:10:9: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
   10 | if(a<10)cout<<"1"<<endl;
      |         ^~~~
      |         std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
a.cc:10:20: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
   10 | if(a<10)cout<<"1"<<endl;
      |                    ^~~~
      |                    std::endl
In file included from /usr/include/c++/14/iostream:41:
/usr/include/c++/14/ostream:744:5: note: 'std::endl' declared here
  744 |     endl(basic_ostream<_CharT, _Traits>& __os)
      |     ^~~~
a.cc:13:1: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
   13 | cout<<b<<endl;
      | ^~~~
      | std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
a.cc:13:10: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
   13 | cout<<b<<endl;
      |          ^~~~
      |          std::endl
/usr/include/c++/14/ostream:744:5: note: 'std::endl' declared here
  744 |     endl(basic_ostream<_CharT, _Traits>& __os)
      |     ^~~~
Language: C++

#include <cstdio>
#include <iostream>
using namespace std;

int main() {
	int a, b;
	while (cin >> a >> b) {
		a = log10(a + b) + 1;
		cout << a << endl;
	}
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:21: error: 'log10' was not declared in this scope
    8 |                 a = log10(a + b) + 1;
      |                     ^~~~~
Language: C++

def get_input():
    while True:
        try:
            yield ''.join(raw_input())
        except EOFError:
            break

if __name__ == '__main__':
    a = list(get_input())

for n in a:
    inl=n.split()
    num=inl[0]+inl[1]
    l=list(num)
    time=0
    for i in l:
        time+=1
    print time

Compiler output:
a.cc:4:19: error: empty character constant
    4 |             yield ''.join(raw_input())
      |                   ^~
a.cc:8:16: warning: multi-character literal with 8 characters exceeds 'int' size of 4 bytes
    8 | if __name__ == '__main__':
      |                ^~~~~~~~~~
a.cc:1:1: error: 'def' does not name a type
    1 | def get_input():
      | ^~~
Language: C++

num = []
i=1
while a = gets
      num = a.split(" ")
      sum = num[0].to_i + num[1].to_i
      puts sum.to_s.size
end

Compiler output:
a.cc:1:1: error: 'num' does not name a type; did you mean 'enum'?
    1 | num = []
      | ^~~
      | enum
Language: C++

#include<iostream>
#include<cstdio>
#include<algorithm>
using namespace std;

int main(){
int a,b;

while(scans(" %d %d",&a,&b){
int cnt=1;
for(int i=1;i<8;i++){
if(a+b-i*10<0)break;
cnt++;
}

cout << ont << endl;

return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:7: error: 'scans' was not declared in this scope; did you mean 'scanf'?
    9 | while(scans(" %d %d",&a,&b){
      |       ^~~~~
      |       scanf
a.cc:9:28: error: expected ')' before '{' token
    9 | while(scans(" %d %d",&a,&b){
      |      ~                     ^
      |                            )
a.cc:16:9: error: 'ont' was not declared in this scope; did you mean 'cnt'?
   16 | cout << ont << endl;
      |         ^~~
      |         cnt
a.cc:19:2: error: expected '}' at end of input
   19 | }
      |  ^
a.cc:6:11: note: to match this '{'
    6 | int main(){
      |           ^
Language: C++

#include<iostream>
#include<cstdio>
#include<algorithm>
using namespace std;

int main(){
int a,b;

while(scanf(" %d %d",&a,&b){
int cnt=1;
for(int i=1;i<8;i++){
if(a+b-i*10<0)break;
cnt++;
}

cout << ont << endl;

return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:28: error: expected ')' before '{' token
    9 | while(scanf(" %d %d",&a,&b){
      |      ~                     ^
      |                            )
a.cc:16:9: error: 'ont' was not declared in this scope; did you mean 'cnt'?
   16 | cout << ont << endl;
      |         ^~~
      |         cnt
a.cc:19:2: error: expected '}' at end of input
   19 | }
      |  ^
a.cc:6:11: note: to match this '{'
    6 | int main(){
      |           ^
Language: C++

#include<iostream>
#include<cstdio>
#include<algorithm>
using namespace std;

int main(){
int a,b;

while(scanf(" %d %d",&a,&b)){
int cnt=1;
for(int i=1;i<8;i++){
if(a+b-i*10<0)break;
cnt++;
}

cout << ont << endl;

return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:16:9: error: 'ont' was not declared in this scope; did you mean 'cnt'?
   16 | cout << ont << endl;
      |         ^~~
      |         cnt
a.cc:19:2: error: expected '}' at end of input
   19 | }
      |  ^
a.cc:6:11: note: to match this '{'
    6 | int main(){
      |           ^
Language: C++

#include<iostream>
#include<cstdio>
#include<algorithm>
using namespace std;

int main(){
int a,b;

while(scanf(" %d %d",&a,&b)){
int cnt=1;
for(int i=1;i<8;i++){
if(a+b-i*10<0)break;
cnt++;
}

cout << cnt << endl;

return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:19:2: error: expected '}' at end of input
   19 | }
      |  ^
a.cc:6:11: note: to match this '{'
    6 | int main(){
      |           ^
Language: C++

#include<iostream>
#include<cstdio>
#include<algorithm>
using namespace std;

int main(){
int a,b;

while(scanf(" %d %d",&a,&b)){
int cnt=1;
for(int i=1;i<8;i++){
if(a+b-i*10<0)break;
cnt++;
}
}

cout << cnt << endl;

return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:17:9: error: 'cnt' was not declared in this scope; did you mean 'int'?
   17 | cout << cnt << endl;
      |         ^~~
      |         int
Language: C++

#include <iosteram>

using namespace std;

int main()
{
    int a, b, ans;
    while (cin >> a >> b) {
        int c = a + b;
        for (ans = 1; c /= 10; ans++)
            ;
        cout << ans << endl;
    }
}

Compiler output:
a.cc:1:10: fatal error: iosteram: No such file or directory
    1 | #include <iosteram>
      |          ^~~~~~~~~~
compilation terminated.