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

#include <stdio,h>
#define MAX 10000

int main()
{
  int l, r, m, n, S[MAX], q, T[MAX], i, j, c = 0;

  
  scanf("%d", &n);
  for(i = 0; i < n; i++) scanf("%d", &S[i]);
  scanf("%d", &q);
  for(i = 0; i < q; i++) scanf("%d", &T[i]);

  r = n;

  while(l > r){
    i = 0;
    m = (l + r) % 2;
    if(A[m] == T[i]){
      c++;
      break;
    }

    else if(T[i]< A[m]) r = m;
    else l = mid + 1;
    
    i++;
  }

  printf("%d" c);

  return 0;
}

Compiler output:
main.c:1:10: fatal error: stdio,h: No such file or directory
    1 | #include <stdio,h>
      |          ^~~~~~~~~
compilation terminated.
Language: C

#include <stdio.h>
#define N 100000
??
int a(int key);
??
int n;
int s[N];
int main(){
??
????int key,c=0;
????int i,q;
??
????scanf("%d",&n);
????for(i=0;i<n;i++){
????????scanf("%d",&s[i]);
????}
????scanf("%d",&q);
????for(i=0;i<q;i++){
????????scanf("%d",&key);
????????if(bs(key)==1) c++;
????}
????printf("%d\n",c);
????return 0;
}
??
int bs(int key){
????int left=0,right=n,mid;
????while(left<right){
????????mid=(left+right)/2;
????????if(key==s[mid]) return 1;
????????if(key>s[mid]) left=mid+1;
????????else if(key<s[mid]) right=mid;
????}
????return 0;
}

Compiler output:
main.c:3:1: error: expected identifier or '(' before '?' token
    3 | ??
      | ^
main.c:5:1: error: expected identifier or '(' before '?' token
    5 | ??
      | ^
main.c: In function 'main':
main.c:9:1: error: expected expression before '?' token
    9 | ??
      | ^
main.c:11:1: error: expected expression before '?' token
   11 | ????int i,q;
      | ^
main.c:12:1: error: expected expression before '?' token
   12 | ??
      | ^
main.c:13:17: error: 'n' undeclared (first use in this function)
   13 | ????scanf("%d",&n);
      |                 ^
main.c:13:17: note: each undeclared identifier is reported only once for each function it appears in
main.c:14:1: error: expected expression before '?' token
   14 | ????for(i=0;i<n;i++){
      | ^
main.c:18:1: error: expected expression before '?' token
   18 | ????for(i=0;i<q;i++){
      | ^
main.c:23:1: error: expected expression before '?' token
   23 | ????return 0;
      | ^
main.c: At top level:
main.c:25:1: error: expected identifier or '(' before '?' token
   25 | ??
      | ^
Language: C

#include <stdio.h>
#define N 100000
??
int bs(int key);
??
int n;
int s[N];
int main(){
??
????int key,count=0;
????int i,q;
??
????scanf("%d",&n);
????for(i=0;i<n;i++){
????????scanf("%d",&s[i]);
????}
????scanf("%d",&q);
????for(i=0;i<q;i++){
????????scanf("%d",&key);
????????if(bs(key)==1) count++;
????}
????printf("%d\n",count);
????return 0;
}
??
int bs(int key){
????int left=0,right=n,mid;
????while(left<right){
????????mid=(left+right)/2;
????????if(key==s[mid]) return 1;
????????if(key>s[mid]) left=mid+1;
????????else if(key<s[mid]) right=mid;
????}
????return 0;
}

Compiler output:
main.c:3:1: error: expected identifier or '(' before '?' token
    3 | ??
      | ^
main.c:5:1: error: expected identifier or '(' before '?' token
    5 | ??
      | ^
main.c: In function 'main':
main.c:9:1: error: expected expression before '?' token
    9 | ??
      | ^
main.c:11:1: error: expected expression before '?' token
   11 | ????int i,q;
      | ^
main.c:12:1: error: expected expression before '?' token
   12 | ??
      | ^
main.c:13:17: error: 'n' undeclared (first use in this function)
   13 | ????scanf("%d",&n);
      |                 ^
main.c:13:17: note: each undeclared identifier is reported only once for each function it appears in
main.c:14:1: error: expected expression before '?' token
   14 | ????for(i=0;i<n;i++){
      | ^
main.c:18:1: error: expected expression before '?' token
   18 | ????for(i=0;i<q;i++){
      | ^
main.c:23:1: error: expected expression before '?' token
   23 | ????return 0;
      | ^
main.c: At top level:
main.c:25:1: error: expected identifier or '(' before '?' token
   25 | ??
      | ^
Language: C

#include<stdio.h>

int lbinarySearch(int n, int key, int *S){

  int left=0,right=n;

  while(left<right){
    mid=(left + right)/2;
    if(S[mid]==key){
      return mid;
    }
    else if(key<S[mid]){
      right=mid;
    }
    else{
      left=mid+1;
    }
    return 0;
  }
}

    
int main(){

  int i,n,q,key,count=0;
  int S[100001];

  scanf("%d",&n);

  for(i=0;i<n;i++){
    scanf("%d",&S[i]);
  }

  scanf("%d",&q);

  for(i=0;i<q;i++){
    scanf("%d",&key);
    if(binarySearch(n,key,S)){
      count++;
    }
  }

  printf("%d\n",count);

  return 0;
}
 

Compiler output:
main.c: In function 'lbinarySearch':
main.c:8:5: error: 'mid' undeclared (first use in this function)
    8 |     mid=(left + right)/2;
      |     ^~~
main.c:8:5: note: each undeclared identifier is reported only once for each function it appears in
main.c: In function 'main':
main.c:38:8: error: implicit declaration of function 'binarySearch'; did you mean 'lbinarySearch'? [-Wimplicit-function-declaration]
   38 |     if(binarySearch(n,key,S)){
      |        ^~~~~~~~~~~~
      |        lbinarySearch
Language: C

#include<stdio.h>

int lbinarySearch(int n, int key, int *S){

  int left=0,right=n,mid;

  while(left<right){
    mid=(left + right)/2;
    if(S[mid]==key){
      return mid;
    }
    else if(key<S[mid]){
      right=mid;
    }
    else{
      left=mid+1;
    }
    return 0;
  }
}

    
int main(){

  int i,n,q,key,count=0;
  int S[100001];

  scanf("%d",&n);

  for(i=0;i<n;i++){
    scanf("%d",&S[i]);
  }

  scanf("%d",&q);

  for(i=0;i<q;i++){
    scanf("%d",&key);
    if(binarySearch(n,key,S)){
      count++;
    }
  }

  printf("%d\n",count);

  return 0;
}
 

Compiler output:
main.c: In function 'main':
main.c:38:8: error: implicit declaration of function 'binarySearch'; did you mean 'lbinarySearch'? [-Wimplicit-function-declaration]
   38 |     if(binarySearch(n,key,S)){
      |        ^~~~~~~~~~~~
      |        lbinarySearch
Language: C

#include <stdio.h>
#define N 100000

int a (int);

int n;
ints[N];
int main() {

  int key, c = 0;
  int i, q;

  scanf("%d", &n);
  for(i=0;i<n;i++){
    scanf("%d", &s[i]);
  }
  scanf("%d", &q);
  for(i=0;i<q;i++){
    scanf("%d", &key);
    if(a(key) == 1) c++;
  }
  printf("%d\n", c);
  return 0;
}

int a (int key) {
  int l = 0, r = n, mid;
  while(l<r){
    mid =(l+r)/2;
    if(key == s[mid]) return 1;
    if(key > s[mid]) l = mid+1;
    else if(key < s[mid]) r = mid;
  }
  return 0;
}

Compiler output:
main.c:7:1: warning: data definition has no type or storage class
    7 | ints[N];
      | ^~~~
main.c:7:1: error: type defaults to 'int' in declaration of 'ints' [-Wimplicit-int]
main.c: In function 'main':
main.c:15:18: error: 's' undeclared (first use in this function)
   15 |     scanf("%d", &s[i]);
      |                  ^
main.c:15:18: note: each undeclared identifier is reported only once for each function it appears in
main.c: In function 'a':
main.c:30:15: error: 's' undeclared (first use in this function)
   30 |     if(key == s[mid]) return 1;
      |               ^
Language: C

#include <stdio.h>
#define N 100000

int a (int);

int n;
int[N];
int main() {

  int key, c = 0;
  int i, q;

  scanf("%d", &n);
  for(i=0;i<n;i++){
    scanf("%d", &s[i]);
  }
  scanf("%d", &q);
  for(i=0;i<q;i++){
    scanf("%d", &key);
    if(a(key) == 1) c++;
  }
  printf("%d\n", c);
  return 0;
}

int a (int key) {
  int l = 0, r = n, mid;
  while(l<r){
    mid =(l+r)/2;
    if(key == s[mid]) return 1;
    if(key > s[mid]) l = mid+1;
    else if(key < s[mid]) r = mid;
  }
  return 0;
}

Compiler output:
main.c:7:4: error: expected identifier or '(' before '[' token
    7 | int[N];
      |    ^
main.c: In function 'main':
main.c:15:18: error: 's' undeclared (first use in this function)
   15 |     scanf("%d", &s[i]);
      |                  ^
main.c:15:18: note: each undeclared identifier is reported only once for each function it appears in
main.c: In function 'a':
main.c:30:15: error: 's' undeclared (first use in this function)
   30 |     if(key == s[mid]) return 1;
      |               ^
Language: C

#include <stdio.h>
#define N 100000

int a (int key);

int n;
int[N];
int main() {

  int key, c = 0;
  int i, q;

  scanf("%d", &n);
  for(i=0;i<n;i++){
    scanf("%d", &s[i]);
  }
  scanf("%d", &q);
  for(i=0;i<q;i++){
    scanf("%d", &key);
    if(a(key) == 1) c++;
  }
  printf("%d\n", c);
  return 0;
}

int a (int key) {
  int l = 0, r = n, mid;
  while(l<r){
    mid =(l+r)/2;
    if(key == s[mid]) return 1;
    if(key > s[mid]) l = mid+1;
    else if(key < s[mid]) r = mid;
  }
  return 0;
}

Compiler output:
main.c:7:4: error: expected identifier or '(' before '[' token
    7 | int[N];
      |    ^
main.c: In function 'main':
main.c:15:18: error: 's' undeclared (first use in this function)
   15 |     scanf("%d", &s[i]);
      |                  ^
main.c:15:18: note: each undeclared identifier is reported only once for each function it appears in
main.c: In function 'a':
main.c:30:15: error: 's' undeclared (first use in this function)
   30 |     if(key == s[mid]) return 1;
      |               ^
Language: C

#include <stdio.h>
#define N 100000

int a (int key);

int n;
int [N];
int main() {

  int key, c = 0;
  int i, q;

  scanf("%d", &n);
  for(i=0;i<n;i++){
    scanf("%d", &s[i]);
  }
  scanf("%d", &q);
  for(i=0;i<q;i++){
    scanf("%d", &key);
    if(a(key) == 1) c++;
  }
  printf("%d\n", c);
  return 0;
}

int a (int key) {
  int l = 0, r = n, mid;
  while(l<r){
    mid =(l+r)/2;
    if(key == s[mid]) return 1;
    if(key > s[mid]) l = mid+1;
    else if(key < s[mid]) r = mid;
  }
  return 0;
}

Compiler output:
main.c:7:5: error: expected identifier or '(' before '[' token
    7 | int [N];
      |     ^
main.c: In function 'main':
main.c:15:18: error: 's' undeclared (first use in this function)
   15 |     scanf("%d", &s[i]);
      |                  ^
main.c:15:18: note: each undeclared identifier is reported only once for each function it appears in
main.c: In function 'a':
main.c:30:15: error: 's' undeclared (first use in this function)
   30 |     if(key == s[mid]) return 1;
      |               ^
Language: C

int main(void)
{
  

int i=0,j=0,n,q,count=0;
  int S[SMAX],T[TMAX];
  
  scanf("%d",&n);
 
  while(i < n){
    scanf("%d",&S[i]);
    i++;
  }
  
  scanf("%d",&q);

  
  while(j < q ){
  scanf("%d",&T[j]);
  j++;
  }

 int left = 0; 
    int right = n; 
    int mid; 


      for(j=0;j < q;j++){
	for(i =0;i < n;i++){
        mid = (left + right) / 2; /* calc of middle key */
        if (left <= right) {
	  if(T[j]==S[i]){
	  count++;
	    }
	  break;
        }
	else if (S[mid] < T[j]) {
            left = mid + 1; /* adjustment of left(start) key */
        }
	else {
            right = mid - 1; /* adjustment of right(end) key */
        }
	}
      }

    printf("%d\n",count);
    return 0;
}

Compiler output:
main.c: In function 'main':
main.c:6:9: error: 'SMAX' undeclared (first use in this function)
    6 |   int S[SMAX],T[TMAX];
      |         ^~~~
main.c:6:9: note: each undeclared identifier is reported only once for each function it appears in
main.c:6:17: error: 'TMAX' undeclared (first use in this function)
    6 |   int S[SMAX],T[TMAX];
      |                 ^~~~
main.c:8:3: error: implicit declaration of function 'scanf' [-Wimplicit-function-declaration]
    8 |   scanf("%d",&n);
      |   ^~~~~
main.c:1:1: note: include '<stdio.h>' or provide a declaration of 'scanf'
  +++ |+#include <stdio.h>
    1 | int main(void)
main.c:8:3: warning: incompatible implicit declaration of built-in function 'scanf' [-Wbuiltin-declaration-mismatch]
    8 |   scanf("%d",&n);
      |   ^~~~~
main.c:8:3: note: include '<stdio.h>' or provide a declaration of 'scanf'
main.c:46:5: error: implicit declaration of function 'printf' [-Wimplicit-function-declaration]
   46 |     printf("%d\n",count);
      |     ^~~~~~
main.c:46:5: note: include '<stdio.h>' or provide a declaration of 'printf'
main.c:46:5: warning: incompatible implicit declaration of built-in function 'printf' [-Wbuiltin-declaration-mismatch]
main.c:46:5: note: include '<stdio.h>' or provide a declaration of 'printf'
Language: C

#include<stdio.h>
??
main(){
??
????int i,j,n,q,left,right,S[100001],T[50001],U[50001],mid;
????int sumcount = 0;
????????
????scanf("%d",&n);
????????
????for(i = 0; i < n; i++){
????????scanf("%d",&S[i]);
????}
????????
????scanf("%d",&q);
????????
????for(j = 0; j < q; j++){
????????scanf("%d",&T[j]);
????}
??
??????
????for(j = 0; j < q; j++){
??????????
????????left = 0;
????????right = n;?????? 
??????????
????????while(left != mid || right != mid){
??????????????
????????mid = (left + right) / 2;
??
????????????if(S[mid] < T[j]) {
????????left =?? mid + 1;
????????????} else if(S[mid] > T[j]) {
????????right =?? mid;
????????????} else if(S[mid] == T[j]) {
????????sumcount++;
????????break;
????????????}
??
????????}
??????????
????}
??????
????printf("%d\n",sumcount);
??????
????return 0;
??
}

Compiler output:
main.c:2:1: error: expected identifier or '(' before '?' token
    2 | ??
      | ^
Language: C

#include <stdio.h>

int biNsearch(int,int );


int A[1000000];


int main(){
  
  
  int i,q,n,key1;
  int count = 0;
  
  scanf("%d", &n);
  
  for(i = 0;i < n;i ++){
    scanf("%d",&A[i]);
  }
  
  scanf("%d",&q);
  
  for(i = 0;i < q;i ++)
    {
      scanf("%d", &key1);
      if(biNsearch(key1,n))count ++;
    }

  printf("%d\n",count);

  return 0;
}

Compiler output:
/usr/bin/ld: /tmp/cc12ys2m.o: in function `main':
main.c:(.text+0xb7): undefined reference to `biNsearch'
collect2: error: ld returned 1 exit status
Language: C

#include <cstdlib>
#include <cstdio>
#include <math.h>
#include <algorithm>
int n,q,t,minn,maxx,sol,sr,ss,i;
long long s[10000000];
using namespace std;
int bs(long long s[], int t, int minn, int maxx)
{
  if (maxx < minn)
    return 5987;
  else
    {
      int sr = (minn+maxx)/2;

      if (s[sr] > t)
     return bs(s, t, minn, sr-1);
      else if (s[sr] < t)
        return bs(s, t, sr+1, maxx);
      else
        return sr;
    }
}
int main()
{
   scanf("%d\n", &n);
   while(i<n)
   {
       scanf("%I64d", &s[i]);
       i++;
   }
scanf("%d", &q);
   i=0;
   while (i<q)
   {
       minn=s[0];
       maxx=s[n-1];
    scanf("%d", &t);
    sol=bs(s,t,minn,maxx);
    if (sol!=5987)
        ss++;
        i++;
   }
   printf("%d", ss);
    return 0;
}

Compiler output:
main.c:1:10: fatal error: cstdlib: No such file or directory
    1 | #include <cstdlib>
      |          ^~~~~~~~~
compilation terminated.
Language: C

#include<iostream>
#include<cstdio>

using namespace std;
int n,q;int a=0;
int s[100001],t[50001];
void tsearch(int l,int z,int y)
{
     
     int m=(z+y)/2;
     if(s[m]==l){a++;return;}
     if(s[m]<l&&m+1<=y)tsearch(l,m+1,y);
     if(s[m]>l&&m-1>=z)tsearch(l,z,m-1);
}
int main()
{
    scanf("%d",&n);
    for(int i=1;i<=n;i++)
    scanf("%d",&s[i]);
    scanf("%d",&q);
    for(int i=1;i<=q;i++)
    scanf("%d",&t[i]);
    for(int i=1;i<=q;i++)
    {
    tsearch(t[i],1,n);
    }
    cout<<a<<endl;
    return 0;
}

Compiler output:
main.c:1:9: fatal error: iostream: No such file or directory
    1 | #include<iostream>
      |         ^~~~~~~~~~
compilation terminated.
Language: C

#include<stdio.h>

int A[1000000],n;

int binarySearch(int key){
	int left=0;
	int right=n;
	int mid;
	while(left,right){
		mid=(left+right)/2;
		if(key==A[mid])return 1;
		if(key>A[mid])left=mid+1;
		else if(key<A[mid])right=mid;
	}
	return 0;
}

int main(){
	int i,q,k,sum=0;
	scanf("%d",&n);
	for(i=0;i<n;i++){
		scanf("%d",&A[i]);
	}
	
	scanf("%d",&q);
	for(i=0;i<q;i++){
		scanf("%d",&k);
		if(binarySearch(k))sum++;
	}
	printf("%\n",sum)
	
	return 0;
}

Compiler output:
main.c: In function 'main':
main.c:30:26: error: expected ';' before 'return'
   30 |         printf("%\n",sum)
      |                          ^
      |                          ;
   31 | 
   32 |         return 0;
      |         ~~~~~~
Language: C

#include<stdio.h>

int A[1000000],n;

int binarySearch(int key){
	int left=0;
	int right=n;
	int mid;
	while(left<right){
		mid=(left+right)/2;
		if(key==A[mid])return 1;
		if(key>A[mid])left=mid+1;
		else if(key<A[mid])right=mid;
	}
	return 0;
}

int main(){
	int i,q,k,sum=0;
	
	scanf("%d",&n);
	for(i=0;i<q;i++){
		scanf("%d",&k);
		if(binarySearch(k))sum++;
	}
	printf("%d\n",sum);
	
	return 0;
	

Compiler output:
main.c: In function 'main':
main.c:28:9: error: expected declaration or statement at end of input
   28 |         return 0;
      |         ^~~~~~
Language: C

#include<stdio.h>

intA[10000000],n;

int binarySearch(int key){
	int left=0;
	int right=n;
	int mid;
	
	while(left<right){
		mid = (left+right)/2;
		if(key==A[mid])return 1;
		if(key>A[mid])left=mid+1;
		else if(key<A[mid])right=mid;
	}
	return 0;
}

int main(){
	int i,q,k,sum=0;
	
	scanf("%d",&n);
	for(i=0;i<n;i++){
		scanf("%d",&A[i]);
	}
	
	scanf("%d",&q);
	for(i=0;i<q;i++){
		scanf("%d"&k);
		if(binarySearch(k))sum++;
		
	}
	printf("%d\n",sum);
	
	return 0;
}

Compiler output:
main.c:3:1: warning: data definition has no type or storage class
    3 | intA[10000000],n;
      | ^~~~
main.c:3:1: error: type defaults to 'int' in declaration of 'intA' [-Wimplicit-int]
main.c:3:16: error: type defaults to 'int' in declaration of 'n' [-Wimplicit-int]
    3 | intA[10000000],n;
      |                ^
main.c: In function 'binarySearch':
main.c:12:25: error: 'A' undeclared (first use in this function)
   12 |                 if(key==A[mid])return 1;
      |                         ^
main.c:12:25: note: each undeclared identifier is reported only once for each function it appears in
main.c: In function 'main':
main.c:24:29: error: 'A' undeclared (first use in this function)
   24 |                 scanf("%d",&A[i]);
      |                             ^
main.c:29:27: error: invalid operands to binary & (have 'char *' and 'int')
   29 |                 scanf("%d"&k);
      |                       ~~~~^
      |                       |
      |                       char *
Language: C

#include<stdio.h>

intA[1000000],n;

int binarySearch(int key){
	int left=0;
	int right=n;
	int mid;
	
	while(left<right){
		mid = (left+right)/2;
		if(key==A[mid])return 1;
		if(key>A[mid])left=mid+1;
		else if(key<A[mid])right=mid;
	}
	return 0;
}

int main(){
	int i,q,k,sum=0;
	
	scanf("%d",&n);
	for(i=0;i<n;i++){
		scanf("%d",&A[i]);
	}
	
	scanf("%d",&q);
	for(i=0;i<q;i++){
		scanf("%d"&k);
		if(binarySearch(k))sum++;
		
	}
	printf("%d\n",sum);
	
	return 0;
}

Compiler output:
main.c:3:1: warning: data definition has no type or storage class
    3 | intA[1000000],n;
      | ^~~~
main.c:3:1: error: type defaults to 'int' in declaration of 'intA' [-Wimplicit-int]
main.c:3:15: error: type defaults to 'int' in declaration of 'n' [-Wimplicit-int]
    3 | intA[1000000],n;
      |               ^
main.c: In function 'binarySearch':
main.c:12:25: error: 'A' undeclared (first use in this function)
   12 |                 if(key==A[mid])return 1;
      |                         ^
main.c:12:25: note: each undeclared identifier is reported only once for each function it appears in
main.c: In function 'main':
main.c:24:29: error: 'A' undeclared (first use in this function)
   24 |                 scanf("%d",&A[i]);
      |                             ^
main.c:29:27: error: invalid operands to binary & (have 'char *' and 'int')
   29 |                 scanf("%d"&k);
      |                       ~~~~^
      |                       |
      |                       char *
Language: C

#include<stdio.h>

int A[1000000],n;

int binarySearch(int key){
	int left=0;
	int right=n;
	int mid;
	
	while(left<right){
		mid = (left+right)/2;
		if(key==A[mid])return 1;
		if(key>A[mid])left=mid+1;
		else if(key<A[mid])right=mid;
	}
	return 0;
}

int main(){
	int i,q,k,sum=0;
	
	scanf("%d",&n);
	for(i=0;i<n;i++){
		scanf("%d",&A[i]);
	}
	
	scanf("%d",&q);
	for(i=0;i<q;i++){
		scanf("%d"&k);
		if(binarySearch(k))sum++;
		
	}
	printf("%d\n",sum);
	
	return 0;
}

Compiler output:
main.c: In function 'main':
main.c:29:27: error: invalid operands to binary & (have 'char *' and 'int')
   29 |                 scanf("%d"&k);
      |                       ~~~~^
      |                       |
      |                       char *
Language: C

#include<stdio.h>

int A[1000000], n;

int binarySearch(int key){
	int left = 0;
	int right = n;
	int mid;
	
	while(left < right){
		mid = (left + right)/2;
		if(key == A[mid]) return 1;
		if(key > A[mid]) left = min+1;
		else if(key < A[mid]) right =mid;
	}
	return 0;
}

int main(){
	int i, q, k, sum=0;
	
	scanf("%d",&n);
	for(i=0;i<n;i++){
		scanf("%d", &A[i]);
	}
	
	scanf("%d",&q);
	for(i=0;i<q;i++){
		scanf("%d",&k);
		if( binarySearch(k)) sum++;
	}
	printf("%d\n",sum);
	
	return 0;
}

Compiler output:
main.c: In function 'binarySearch':
main.c:13:41: error: 'min' undeclared (first use in this function); did you mean 'mid'?
   13 |                 if(key > A[mid]) left = min+1;
      |                                         ^~~
      |                                         mid
main.c:13:41: note: each undeclared identifier is reported only once for each function it appears in
Language: C

#include<stdio.h>

int A[1000000],n;


int binarySearch(int key){
	int left=0;
	int right=0;
	int mid;
	while(left<right){
		mid=(left+right)/2;
		if(key==A[mid]) return 1;
		if(key>A[mid]) left=mid+1;
		else if(key<A[mid]) right=mid;
	}
	return 0;
}

int main(){
	int i,qk,sum=0;
	
	scanf("%d",&n);
	for(i=0;i<q;i++){
		scanf("%d",&A[i]);
	}
	
	scanf("%d",&q);
	for(i=0;i<q;i++){
		scanf("%d",&k);
		if(binarySearch(k))sum++;
	}
	printf("%d\n",sun);
	return 0;
	
}

Compiler output:
main.c: In function 'main':
main.c:23:19: error: 'q' undeclared (first use in this function); did you mean 'qk'?
   23 |         for(i=0;i<q;i++){
      |                   ^
      |                   qk
main.c:23:19: note: each undeclared identifier is reported only once for each function it appears in
main.c:29:29: error: 'k' undeclared (first use in this function); did you mean 'qk'?
   29 |                 scanf("%d",&k);
      |                             ^
      |                             qk
main.c:32:23: error: 'sun' undeclared (first use in this function); did you mean 'sum'?
   32 |         printf("%d\n",sun);
      |                       ^~~
      |                       sum
Language: C

int A[1000000],n;


int binarySearch(int key){
	int left=0;
	int right=0;
	int mid;
	while(left<right){
		mid=(left+right)/2;
		if(key==A[mid]) return 1;
		if(key>A[mid]) left=mid+1;
		else if(key<A[mid]) right=mid;
	}
	return 0;
}

int main(){
	int i,q,k,sum=0;
	
	scanf("%d",&n);
	for(i=0;i<n;i++){
		scanf("%d",&A[i]);
	}
	
	scanf("%d",&q);
	for(i=0;i<q;i++){
		scanf("%d",&k);
		if(binarySearch(k))sum++;
	}
	printf("%d\n",sum);
	return 0;
	

Compiler output:
main.c: In function 'main':
main.c:20:9: error: implicit declaration of function 'scanf' [-Wimplicit-function-declaration]
   20 |         scanf("%d",&n);
      |         ^~~~~
main.c:1:1: note: include '<stdio.h>' or provide a declaration of 'scanf'
  +++ |+#include <stdio.h>
    1 | int A[1000000],n;
main.c:20:9: warning: incompatible implicit declaration of built-in function 'scanf' [-Wbuiltin-declaration-mismatch]
   20 |         scanf("%d",&n);
      |         ^~~~~
main.c:20:9: note: include '<stdio.h>' or provide a declaration of 'scanf'
main.c:30:9: error: implicit declaration of function 'printf' [-Wimplicit-function-declaration]
   30 |         printf("%d\n",sum);
      |         ^~~~~~
main.c:30:9: note: include '<stdio.h>' or provide a declaration of 'printf'
main.c:30:9: warning: incompatible implicit declaration of built-in function 'printf' [-Wbuiltin-declaration-mismatch]
main.c:30:9: note: include '<stdio.h>' or provide a declaration of 'printf'
main.c:31:9: error: expected declaration or statement at end of input
   31 |         return 0;
      |         ^~~~~~
Language: C

#include <stdio.h>
 
int A[1000000], n;
 
int binarySearch(int key)
{
    int left = 0, right = n, mid;
    while (left < right)
    {
        mid = (left + right) / 2;
        if (key == A[mid])return mid;
        else if (key < A[mid])right = mid;
        else left = mid + 1;
    }

    return 0;
}
 
int main()
{
    int i,q,k,result;
 
    scanf("%d", &n);
    for (i = 0; i < n; i++)
    {
        scanf("%d", &A[i]);
    }

    scanf("%d", &q);

    for (i = 0; i < q; i++)
    {
        scanf("%d", &k);
        if (binarySearch(k))sum++;
    }

    printf("%d\n",result);
    
    return 0;
}

Compiler output:
main.c: In function 'main':
main.c:34:29: error: 'sum' undeclared (first use in this function)
   34 |         if (binarySearch(k))sum++;
      |                             ^~~
main.c:34:29: note: each undeclared identifier is reported only once for each function it appears in
Language: C

#include<stdio.h>

int A[1000000],n;
int binarySearch(int key){
int left=0;
int right=n;
int mid;
while(left<right){
mid=(left+right)/2;
if (key==A[mid]) return 1;
if (key>A[mid]) left=mid+1;
else if(key<A[mid]) right=mid;
}
return 0;
}
int main(){
int i,qnk,sum=0;
scanf("%d",&n);
for(i=0;i<n;i++){
scanf("%d",&A[i]);
}
scanf("%d",&q);
for(i=0;i<q;i++){
scanf("%d",&k);
if (binarySearch(k))sum++;
}
printf("%d\n",sum);
return 0;
}

Compiler output:
main.c: In function 'main':
main.c:22:13: error: 'q' undeclared (first use in this function)
   22 | scanf("%d",&q);
      |             ^
main.c:22:13: note: each undeclared identifier is reported only once for each function it appears in
main.c:24:13: error: 'k' undeclared (first use in this function)
   24 | scanf("%d",&k);
      |             ^
Language: C

#include<stdio.h>

int count;

void binarysearch(int S[], int n, int key){
  int top = 0, tail = n-1, a;
  while(top != tail){
    a = int((top + tail)/2);
    if (S[a] == key){
      count++;
      break;
    } else if(S[a] < key) top = a;
    else tail = a;
  }
  if(top = tail && S[top] == key) count++;
}

int main(void){
  int i, n, q, b, S[100000];
  scanf("%d", &n);
  for(i=0;i<n;i++) scanf("%d", &S[i]);
  scanf("%d", &q);
  for(i=0;i<q;i++){
    scanf("%d", &b);
    binarysearch(S[], n, b);
  }
  printf("%d\n", count);
  return 0;
}

Compiler output:
main.c: In function 'binarysearch':
main.c:8:9: error: expected expression before 'int'
    8 |     a = int((top + tail)/2);
      |         ^~~
main.c: In function 'main':
main.c:25:20: error: expected expression before ']' token
   25 |     binarysearch(S[], n, b);
      |                    ^
Language: C

#include<stdio.h>

int A[1000000], n;

int binarySearch(int key){
  int left = 0;
  int right = n;
  int mid;

  while (left < right) {
    mid = (left + right) / 2;
    if (key == A[mid]) return 1;
    if (key > A[mid]) left = mid + 1;
    else if (key < A[mid]) right = mid;
  }
  return 0;
}

int main() {
  int i, q, k, sum = 0;

  scanf("%d", &n);
  for (i = 0; i < n; i++) {
    scanf("%d", %A[i]);
  }

  scanf("%d", &q);
  for (i = 0; i < q; i++) {
    scanf("%d", &k);
    if (binarySearch(k)) sum++;
  }
  printf("%d", sum);
  return 0;
}

Compiler output:
main.c: In function 'main':
main.c:24:17: error: expected expression before '%' token
   24 |     scanf("%d", %A[i]);
      |                 ^
Language: C

#include<stdio.h>

int binary_search(int *a, int n, int key)
{
    int left = 0, right = n, mid;
    while(left < right){
        mid = (left + right) / 2;
        if(a[mid] == key) return 1;
        else if(key < a[mid]) right = mid;
        else left = mid + 1;
    }
    return 0;
}

int main()e
{
    int i, n, q, key, a[100000], cnt;
    scanf("%d", &n);
    for(i = 0; i < n; i++){
        scanf("%d", &a[i]);
    }
    scanf("%d", &q);
    for(i = 0; i < q; i++){
        scanf("%d", &key);
        if(binary_search(a, n, key)) cnt++;
    }
    printf("%d\n", cnt);
    return 0;
}

Compiler output:
main.c: In function 'main':
main.c:15:11: error: expected declaration specifiers before 'e'
   15 | int main()e
      |           ^
main.c:30: error: expected '{' at end of input
Language: C

 #include<studio.h>
int S[100000], n;
 
int binarySearch(int key){
  int left = 0;
  int right = n;
  int mid;
  while(left < right){
    mid = (left + right) / 2;
    if(key == S[mid]) return 1;
    if(key > S[mid]) left = mid+1;
    else if(key < S[mid]) right = mid;
  }
  return 0;
}
int main()
{
  int q, T[50000], C, i;
  C = 0;
  scanf("%d", &n);
  for(i = 0;i < n;i++) scanf("%d", &S[i]);
  scanf("%d", &q);
  for(i = 0;i < q;i++){
    scanf("%d", &T[i]);
    if(binarySearch(T[i])) C++;
  }
  printf("%d\n", C);
  return 0;
}

Compiler output:
main.c:1:10: fatal error: studio.h: No such file or directory
    1 |  #include<studio.h>
      |          ^~~~~~~~~~
compilation terminated.
Language: C

#include <stdio.h>
int main()
{
int n,S[100000]={-1},q,t,a=0;
scanf("%d",&n);
int i;
for(i=0;i<n;i++)
scanf("%d",&S[i]);
scanf("%d",&q);
 
for(int i=0;i<q;i++){
scanf("%d",&t);
int left=0,right=n-1;
while(left<=right){
int mid=(left+right)/2;
if(t==S[mid]){
right=-1;
break;
}
else if(T>S[mid])
left=mid+1;
else
right=mid-1;
}
if(right==-1)
a++;
    }
printf("%d\n",a);
    
return 0;
}

Compiler output:
main.c: In function 'main':
main.c:20:9: error: 'T' undeclared (first use in this function)
   20 | else if(T>S[mid])
      |         ^
main.c:20:9: note: each undeclared identifier is reported only once for each function it appears in
Language: C

#include <stdio.h>

int A[100000], n;

int binarySearch(int key)  {
  int left = 0, right = n, mid;
  while (leaft < right)  {
    mid = (leaft + right) / 2;
    if ( key == A[mid]))
      return 1;
    if (key > A[mid]) 
      left = mid+1;
    else if (key < A[mid]) right = mid;
  }
  return 0;
}
  
int main(void)  {
  int i, j, q, k, sum=0;

  scanf("%d", &n);
  for (i = 0; i < n; i++)  {
    scanf("%d", &A[i]);
  }
  
  scanf("%d", &q);
  for (i = 0; i < q; i++)  {
    scanf("%d", &k);
    if (binarySearch(k) != 0)
      sum++;
  }
  printf("%d\n", sum);

  return 0;
}
  

Compiler output:
main.c: In function 'binarySearch':
main.c:7:10: error: 'leaft' undeclared (first use in this function); did you mean 'left'?
    7 |   while (leaft < right)  {
      |          ^~~~~
      |          left
main.c:7:10: note: each undeclared identifier is reported only once for each function it appears in
main.c:9:24: error: expected statement before ')' token
    9 |     if ( key == A[mid]))
      |                        ^
Language: C

#include <stdio.h>

int binarySearch(int a[],int key){
  int left,light,mid;
  left=0;
  light=n;
  while(left<right){
    mid=(left+light)/2;
    if(a[mid]==key){
      return 1;
    }
    else if(key<a[mid]){
     right=mid;
    }
    else{
      left=mid+1;
    }
  }
  return 0;
}

int main(void)
{
  int i,n,a[1000000],q,key,ans;
  ans=0;
  scanf("%d",&n);
  for(i=0;i<n;i++){
    scanf("%d",&a[i]);
  }
  scanf("%d",&q);
  for(i=0;i<q;i++){
    scanf("%d",&key);
    if(binarySearch(a,n,key)){
      ans++;
    }
  }
  printf("%d\n",ans);
  
  return 0;
}

Compiler output:
main.c: In function 'binarySearch':
main.c:6:9: error: 'n' undeclared (first use in this function)
    6 |   light=n;
      |         ^
main.c:6:9: note: each undeclared identifier is reported only once for each function it appears in
main.c:7:14: error: 'right' undeclared (first use in this function); did you mean 'light'?
    7 |   while(left<right){
      |              ^~~~~
      |              light
main.c: In function 'main':
main.c:33:8: error: too many arguments to function 'binarySearch'
   33 |     if(binarySearch(a,n,key)){
      |        ^~~~~~~~~~~~
main.c:3:5: note: declared here
    3 | int binarySearch(int a[],int key){
      |     ^~~~~~~~~~~~
Language: C

#include <stdio.h>

int binarySearch(int a[],int n,int key){
  int left,light,mid;
  left=0;
  light=n;
  while(left<right){
    mid=(left+light)/2;
    if(a[mid]==key){
      return 1;
    }
    else if(key<a[mid]){
     right=mid;
    }
    else{
      left=mid+1;
    }
  }
  return 0;
}

int main(void)
{
  int i,n,a[1000000],q,key,ans;
  ans=0;
  scanf("%d",&n);
  for(i=0;i<n;i++){
    scanf("%d",&a[i]);
  }
  scanf("%d",&q);
  for(i=0;i<q;i++){
    scanf("%d",&key);
    if(binarySearch(a,n,key)){
      ans++;
    }
  }
  printf("%d\n",ans);
  
  return 0;
}

Compiler output:
main.c: In function 'binarySearch':
main.c:7:14: error: 'right' undeclared (first use in this function); did you mean 'light'?
    7 |   while(left<right){
      |              ^~~~~
      |              light
main.c:7:14: note: each undeclared identifier is reported only once for each function it appears in
Language: C

#include <stdio.h>

int binarySearch(int a[],int n,int key){
  int left,light,mid;
  left=0;
  light=n;
  while(left<right){
    mid=(left+light)/2;
    if(a[mid]==key){
      return 1;
    }
    else if(key<a[mid]){
     light=mid;
    }
    else{
      left=mid+1;
    }
  }
  return 0;
}

int main(void)
{
  int i,n,a[1000000],q,key,ans;
  ans=0;
  scanf("%d",&n);
  for(i=0;i<n;i++){
    scanf("%d",&a[i]);
  }
  scanf("%d",&q);
  for(i=0;i<q;i++){
    scanf("%d",&key);
    if(binarySearch(a,n,key)){
      ans++;
    }
  }
  printf("%d\n",ans);
  
  return 0;
}

Compiler output:
main.c: In function 'binarySearch':
main.c:7:14: error: 'right' undeclared (first use in this function); did you mean 'light'?
    7 |   while(left<right){
      |              ^~~~~
      |              light
main.c:7:14: note: each undeclared identifier is reported only once for each function it appears in
Language: C

#include <stdio.h>

int binarySearch(int a[],int n,int key){
  int left,right,mid;
  left=0;
  light=n;
  while(left<right){
    mid=(left+right)/2;
    if(a[mid]==key){
      return 1;
    }
    else if(key<a[mid]){
     right=mid;
    }
    else{
      left=mid+1;
    }
  }
  return 0;
}

int main(void)
{
  int i,n,a[1000000],q,key,ans;
  ans=0;
  scanf("%d",&n);
  for(i=0;i<n;i++){
    scanf("%d",&a[i]);
  }
  scanf("%d",&q);
  for(i=0;i<q;i++){
    scanf("%d",&key);
    if(binarySearch(a,n,key)){
      ans++;
    }
  }
  printf("%d\n",ans);
  
  return 0;
}

Compiler output:
main.c: In function 'binarySearch':
main.c:6:3: error: 'light' undeclared (first use in this function); did you mean 'right'?
    6 |   light=n;
      |   ^~~~~
      |   right
main.c:6:3: note: each undeclared identifier is reported only once for each function it appears in
Language: C

#include <stdio.h>

int main(){

  int n,q,i,key,a,b,X;

  int S[100000],ans = 0;

  scanf("%d" ,&n);

  for(i = 0 ; i < n ; i++){
   
   scanf("%d" , S + i);

  }

  scanf("%d" ,&q);

  for(i = 0 ; i < q ; i++){

    scanf("%d" ,&key);
    a = 0; b = n;
    
     while(b >= a){
     
      mid = (a + b) / 2;

      if(S[X] == key){
    ans++;
    break;
  
     }

    if(S[X] < key){
     a = X+1;
    }else{

     b = X-1;
      }
    }
   }
   
  printf("%d\n" ,ans);

  return 0;
}

Compiler output:
main.c: In function 'main':
main.c:26:7: error: 'mid' undeclared (first use in this function)
   26 |       mid = (a + b) / 2;
      |       ^~~
main.c:26:7: note: each undeclared identifier is reported only once for each function it appears in
Language: C

#include <stdio.h>

int a[1000000], n;
 
int BinarySearch(int key)
{
   int left = 0;
   int right = n;
   int mid;

   while ( left < right ) {
      mid = ( left + right) / 2;
      if  ( key == a[mid] ) return 1;
      if ( key < a[mid] ) left = mid;
      else if ( key < a[mid] ) right = mid;
   }
   return 0;
}
 

int main()
{
   int i, k, q, sum = 0;

   scanf("%d", &n);
   for ( i = 0; i < n; i++ ) {
      scanf("%d", &a[i]);
   }

   scanf("%d", &q);
   for ( i = 0; i < q; i++ ) {
      scanf("%d", &k);
      if (binarySearch( k ) ) ++sum;
   }

   printf("%d\n", sum);
     
   return 0;
}

Compiler output:
main.c: In function 'main':
main.c:33:11: error: implicit declaration of function 'binarySearch'; did you mean 'BinarySearch'? [-Wimplicit-function-declaration]
   33 |       if (binarySearch( k ) ) ++sum;
      |           ^~~~~~~~~~~~
      |           BinarySearch
Language: C

#include <stdio.h>
 
int a[1000000], n;
  
int BinarySearch(int key)
{
   int left = 0;
   int right = n;
   int mid;
 
   while ( left < right ) {
      mid = ( left + right) / 2;
      if  ( key == a[mid] ) return 1;
      if ( key < a[mid] ) left = mid;
      else if ( key < a[mid] ) right = mid;
   }
   return 0;
}
  
 
int main()
{
   int i, k, q, sum = 0;
 
   scanf("%d", &n);
   for ( i = 0; i < n; i++ ) {
      scanf("%d", &a[i]);
   }
 
   scanf("%d", &q);
   for ( i = 0; i < q; i++ ) {
      scanf("%d", &k);
      if ( binarySearch( k ) ) sum++;
   }
 
   printf("%d\n", sum);
      
   return 0;
}

Compiler output:
main.c: In function 'main':
main.c:33:12: error: implicit declaration of function 'binarySearch'; did you mean 'BinarySearch'? [-Wimplicit-function-declaration]
   33 |       if ( binarySearch( k ) ) sum++;
      |            ^~~~~~~~~~~~
      |            BinarySearch
Language: C

#include<stdio.h>

int n, A[100000];                  /*??°??????????´??????????*/

int binarySearch(int k)            /*?????°??? k ??¨??????????????????*/
{
   int left = 0;
   int right = n;
   int mid;

   while (left<right){
      mid = (left+right)/2;
      if (A[mid]==k)               /* key ?????????*/
         return mid;                  /*??????(key)???????????????*/
      else if (key<A[mid])         /*?????????????´¢*/
         right = mid-1;               /* left mid mid ??¨????????????????¶???±*/
      else                         /*?????????????´¢*/
         left = mid+1;                /* else if ((key)>A[mid]) ?????¨??????????????¢?´¢??¨????§?*/
   }
   return 0;
}

int main()
{
   int i, q, key, sum=0;

   scanf("%d", &n);
   for (i=0; i<n; i++)
      scanf("%d", &S[i]);

   scanf("%d", &q);
   for (i=0; i<q; i++){
      scanf("%d", &key);
      if (binarySearch(key))        /*????????¢?´¢??¢??°??? key ????????¨?????????*/
         sum++;
   }

   printf("%d\n", sum);

   return 0;
}
   

Compiler output:
main.c: In function 'binarySearch':
main.c:15:16: error: 'key' undeclared (first use in this function)
   15 |       else if (key<A[mid])         /*?????????????´¢*/
      |                ^~~
main.c:15:16: note: each undeclared identifier is reported only once for each function it appears in
main.c: In function 'main':
main.c:29:20: error: 'S' undeclared (first use in this function)
   29 |       scanf("%d", &S[i]);
      |                    ^
Language: C

#include<stdio.h>

int n, A[100000];                  /*??°??????????´??????????*/

int binarySearch(int k)            /*?????°??? k ??¨??????????????????*/
{
   int left = 0;
   int right = n;
   int mid;

   while (left<right){
      mid = (left+right)/2;
      if (A[mid]==k)               /*key ?????????*/
         return mid;                  /*??????(key)???????????????*/
      else if (key<A[mid])         /*?????????????´¢*/
         right = mid-1;               /*left mid mid ??¨????????????????¶???±*/
      else                         /*?????????????´¢*/
         left = mid+1;                /*else if ((key)>A[mid]) ?????¨??????????????¢?´¢??¨????§?*/
   }
   return 0;
}

int main()
{
   int i, q, key, sum=0;

   scanf("%d", &n);
   for (i=0; i<n; i++)
      scanf("%d", &A[i]);

   scanf("%d", &q);
   for (i=0; i<q; i++){
      scanf("%d", &key);
      if (binarySearch(key))        /*????????¢?´¢??¢??°??? key ????????¨?????????*/
         sum++;
   }

   printf("%d\n", sum);

   return 0;
}

Compiler output:
main.c: In function 'binarySearch':
main.c:15:16: error: 'key' undeclared (first use in this function)
   15 |       else if (key<A[mid])         /*?????????????´¢*/
      |                ^~~
main.c:15:16: note: each undeclared identifier is reported only once for each function it appears in
Language: C

#include <stdio.h>
int main()
{
   int i, j, n, S[10000], q, T[10000], key;
   int left, right, mid,count;
    int count = 0;
     
    scanf("%d",&n);
     
    for(i = 0; i < n; i++){
        scanf(" %d",&S[i]);
    }
    scanf("%d",&q);
     
    for(i = 0; i < q; i++){
        scanf(" %d",&T[i]);
    }
    
	for(key = 0; key < q; key++){
		left = S[0];
		right = S[n-1];
		while (left < right){
			mid = (left + right) / 2;
			if (mid == T[key]){ 
			count++;
			break;
			}else if(T[key] < mid){
			right = mid;
			}else{
			left = mid + 1;
			}
		}
	}

	printf("%d\n",count);
	
	return 0;
}

Compiler output:
main.c: In function 'main':
main.c:6:9: error: redeclaration of 'count' with no linkage
    6 |     int count = 0;
      |         ^~~~~
main.c:5:25: note: previous declaration of 'count' with type 'int'
    5 |    int left, right, mid,count;
      |                         ^~~~~
Language: C


#include <stdio.h>
int main()
{
   int i, j, n, S[10000], q, T[10000], key;
   int left, right, mid,count;
    int count = 0;
     
    scanf("%d",&n);
     
    for(i = 0; i < n; i++){
        scanf(" %d",&S[i]);
    }
    scanf("%d",&q);
     
    for(i = 0; i < q; i++){
        scanf(" %d",&T[i]);
    }
    
	for(key = 0; key < q; key++){
		left = S[0];
		right = S[n-1];
		while (left < right){
			mid = (left + right) / 2;
			if (mid == T[key]){ 
			count++;
			break;
			}else if(T[key] < mid){
			right = mid;
			}else{
			left = mid + 1;
			}
		}
	}

	printf("%d\n",count);
	
	return 0;
}

Compiler output:
main.c: In function 'main':
main.c:7:9: error: redeclaration of 'count' with no linkage
    7 |     int count = 0;
      |         ^~~~~
main.c:6:25: note: previous declaration of 'count' with type 'int'
    6 |    int left, right, mid,count;
      |                         ^~~~~
Language: C

#include<stdio.h>

int 
int main(){

 int a[100000],b[50000],n,m,i,j;
 int count=0;
int left,mid,left;



  scanf("%d",&n);
  for(i=0;i<n;i++){
  scanf("%d",&a[i]);}

  scanf("%d",&m);
  for(j=0;j<m;j++){
   scanf("%d",&b[j]);}


    for(i=0;i<n;i++){
       left=0;
       right=n;
       mid=(left+right)/2;
if(a[mid]==b[i]){count++;
break;
}
else if(a[mid]<b[i]){
right=mid+1;}
else{
right=mid-1;
}
}
 printf("%d\n",count);
 return 0;
}

Compiler output:
main.c:4:1: error: two or more data types in declaration specifiers
    4 | int main(){
      | ^~~
main.c: In function 'main':
main.c:8:14: error: redeclaration of 'left' with no linkage
    8 | int left,mid,left;
      |              ^~~~
main.c:8:5: note: previous declaration of 'left' with type 'int'
    8 | int left,mid,left;
      |     ^~~~
main.c:23:8: error: 'right' undeclared (first use in this function)
   23 |        right=n;
      |        ^~~~~
main.c:23:8: note: each undeclared identifier is reported only once for each function it appears in
Language: C

#include <stdio.h>
int main()
{
   int i, j, n, S[10000], q, T[10000], key;
   int left, right, mid,count;
   int count = 0;
     
    scanf("%d",&n);
     
    for(i = 0; i < n; i++){
        scanf(" %d",&S[i]);
    }
    scanf("%d",&q);
     
    for(i = 0; i < q; i++){
        scanf(" %d",&T[i]);
    }
    
	for(key = 0; key < q; key++){
		left = 0;
		right = n-1;
		while (left < right){
			mid = (left + right) / 2;
			if (S[mid] == T[key]){ 
			count++;
			break;
			}else if(T[key] < S[mid]){
			right = mid;
			}else{
			left = mid + 1;
			}
		}
	}

	printf("%d\n",count);
	
	return 0;
}

Compiler output:
main.c: In function 'main':
main.c:6:8: error: redeclaration of 'count' with no linkage
    6 |    int count = 0;
      |        ^~~~~
main.c:5:25: note: previous declaration of 'count' with type 'int'
    5 |    int left, right, mid,count;
      |                         ^~~~~
Language: C

#include<stdio.h>

int 
int main(){

 int a[100000],b[50000],n,m,i,j;
 int count=0;
 int left,mid,right;



  scanf("%d",&n);
  for(i=0;i<n;i++){
  scanf("%d",&a[i]);}

  scanf("%d",&m);
  for(j=0;j<m;j++){
   scanf("%d",&b[j]);}


    for(i=0;i<n;i++){
       left=0;
       right=n;
       mid=(left+right)/2;
if(a[mid]==b[i]){count++;
break;
}
else if(a[mid]<b[i]){
right=mid+1;}
else{
right=mid-1;
}
}
 printf("%d\n",count);
 return 0;
}

Compiler output:
main.c:4:1: error: two or more data types in declaration specifiers
    4 | int main(){
      | ^~~
Language: C

#include<stdio.h>

int S[100000], n;

int binarySearch(int key){

  int left = 0;
  int right = n;
  int mid;

  while ( left < right ) {
    mid = (left + right) / 2;
    if ( S[mid] == key ) return 1;
    else if ( key < S[mid] ) right = mid;
    else left = mid + 1;
  }
  return 0;
}

int main(){

  int q, i, t, count;
  sum = 0;

  scanf("%d", &n);
  for ( i = 0; i < n; i++ ) scanf("%d", &S[i]);

  scanf("%d", &q);
  for ( i = 0; i < q; i++){
    scanf("%d", &t);
    if ( binarySearch( t ) ) count++;
  }
  printf("%d\n", count);  

  return 0;

}

Compiler output:
main.c: In function 'main':
main.c:23:3: error: 'sum' undeclared (first use in this function)
   23 |   sum = 0;
      |   ^~~
main.c:23:3: note: each undeclared identifier is reported only once for each function it appears in
Language: C

#include<stdio.h>

int main() {
   int n, q, i, j, key, a;
   int left, mid, right;
   int s[100000];
   int t[50000];
   int count = 0;

   scanf("%d\n", &n);
   for (i = 0; i < n; i++)
	   scanf("%d", &s[i]);

   scanf("%d\n", &q);
   for (i = 0; i < q; i++)
	   scanf("%d", &t[i]);

   left = 0;
   right = n;

   for (i = 0; i < q; i++) {
	   a = 0;
	   key = t[i];
	   j = 0;
	   while (left < right && a == 0;) {
		   mid = (left + right) / 2;
		   if (s[mid] == key)
			   a = 1;
		   else if (key < s[mid])
			   right = mid;
		   else
			   left = mid + 1;
	   }
	   if (j == n)
		   a = 0;
	   if (a == 1)
		   count++;

   }
   printf("%d\n", count);

}

Compiler output:
main.c: In function 'main':
main.c:25:41: error: expected ')' before ';' token
   25 |            while (left < right && a == 0;) {
      |                  ~                      ^
      |                                         )
Language: C

#include<stdio.h>

int binarySearch(int S[], int n, int key){
    int left=0;
    int right=n;

    while(left<right){
        mid = (left+right)/2;
        if(S[mid]==key){
            return mid;
        }else if(key<S[mid]){
            right=mid;
        }else{
            left=mid+1;
        }
        return 0;
    }
}

int main(){
    int S[500000], i, n, q, key, cnt;
    cnt=0;

    scanf("%d", &n);
    for(i=0;i<n;i++){
        scanf("%d", &S[i]);
    }

    scanf("%d", &q);
    for(i=0;i<q;i++){
        scanf("%d", &key);
        if(binarySearch(S,n,key) == 1);
        cnt++;
    }

    printf("%d\n", cnt);

    return 0;
}

Compiler output:
main.c: In function 'binarySearch':
main.c:8:9: error: 'mid' undeclared (first use in this function)
    8 |         mid = (left+right)/2;
      |         ^~~
main.c:8:9: note: each undeclared identifier is reported only once for each function it appears in
Language: C

#include<stdio.h>

int A[1000000], n;

int binarySearch(int key){
  int left = 0;
  int right = n;
  int mid;
  while(left < right){
    mid = (left + right)/2;
    if(key == A[mid]) return 1;
    if(key >  A[mid]) left = mid +1;
    else if (key < mid[A]) right = mid;
  }
  return 0;
}

int main()
{
  int i, q, k, sum = 0;

  scanf("%d", n);
  for(i = 0; i < n; i++){
    scanf("%d", A[i]);
  }
  
  scanf("%d", &q);
  for(i = 0; i < q; i++){
    scanf("%d", &k);
    if (binarySearch(k)) sum++
  }
  printf("%d\n", sum);
  
  return 0;
}

Compiler output:
main.c: In function 'main':
main.c:30:31: error: expected ';' before '}' token
   30 |     if (binarySearch(k)) sum++
      |                               ^
      |                               ;
   31 |   }
      |   ~
Language: C

#include <stdio.h>
void Search(int,int );
int S[10000],T[10000];

void Search(int n,int q){
int i,j,k;
	for(i=0;i<n;i++){
	for(j=0;j<q;j++){
		if(S[i]==T[q])
			k++;
	 T[]=T[]-T[q]
	}
	}
return k;
}
int main(){
int n,q,i,j;

scanf("%d",&n);
for(i=0;i<n;i++)
	scanf("%s",S[i]);

scanf("%d",&q);
for(j=0;j<n;j++)
	scanf("%s",T[j]);
	
Search(n,q);
return 0;
}

Compiler output:
main.c: In function 'Search':
main.c:11:12: error: expected expression before ']' token
   11 |          T[]=T[]-T[q]
      |            ^
main.c:14:8: error: 'return' with a value, in function returning void [-Wreturn-mismatch]
   14 | return k;
      |        ^
main.c:5:6: note: declared here
    5 | void Search(int n,int q){
      |      ^~~~~~