Language: C++

#include<iostream>
#include<string>
#include<algorithm>
#include<iomanip>
using namespace std;
#define pi 3.141592653589793283462
int main(){
????int a,b,c;
?????cin>>a>>b>>c;
?????if(a<b){
?????????if(b<c)
?????????????cout<<"Yes"<<endl;
?????????else
??????????????cout<<"No"<<endl;
?????}
?????else
??????????cout<<"No"<<endl;
????return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:1: error: expected primary-expression before '?' token
    8 | ????int a,b,c;
      | ^
a.cc:8:2: error: expected primary-expression before '?' token
    8 | ????int a,b,c;
      |  ^
a.cc:8:3: error: expected primary-expression before '?' token
    8 | ????int a,b,c;
      |   ^
a.cc:8:4: error: expected primary-expression before '?' token
    8 | ????int a,b,c;
      |    ^
a.cc:8:5: error: expected primary-expression before 'int'
    8 | ????int a,b,c;
      |     ^~~
a.cc:8:5: error: expected ':' before 'int'
    8 | ????int a,b,c;
      |     ^~~
      |     :
a.cc:8:5: error: expected primary-expression before 'int'
    8 | ????int a,b,c;
      |     ^~~
a.cc:8:5: error: expected ':' before 'int'
    8 | ????int a,b,c;
      |     ^~~
      |     :
a.cc:8:5: error: expected primary-expression before 'int'
    8 | ????int a,b,c;
      |     ^~~
a.cc:8:5: error: expected ':' before 'int'
    8 | ????int a,b,c;
      |     ^~~
      |     :
a.cc:8:5: error: expected primary-expression before 'int'
    8 | ????int a,b,c;
      |     ^~~
a.cc:8:5: error: expected ':' before 'int'
    8 | ????int a,b,c;
      |     ^~~
      |     :
a.cc:8:5: error: expected primary-expression before 'int'
    8 | ????int a,b,c;
      |     ^~~
a.cc:9:1: error: expected primary-expression before '?' token
    9 | ?????cin>>a>>b>>c;
      | ^
a.cc:9:2: error: expected primary-expression before '?' token
    9 | ?????cin>>a>>b>>c;
      |  ^
a.cc:9:3: error: expected primary-expression before '?' token
    9 | ?????cin>>a>>b>>c;
      |   ^
a.cc:9:4: error: expected primary-expression before '?' token
    9 | ?????cin>>a>>b>>c;
      |    ^
a.cc:9:5: error: expected primary-expression before '?' token
    9 | ?????cin>>a>>b>>c;
      |     ^
a.cc:9:11: error: 'a' was not declared in this scope
    9 | ?????cin>>a>>b>>c;
      |           ^
a.cc:9:14: error: 'b' was not declared in this scope
    9 | ?????cin>>a>>b>>c;
      |              ^
a.cc:9:17: error: 'c' was not declared in this scope
    9 | ?????cin>>a>>b>>c;
      |                 ^
a.cc:9:18: error: expected ':' before ';' token
    9 | ?????cin>>a>>b>>c;
      |                  ^
      |                  :
a.cc:9:18: error: expected primary-expression before ';' token
a.cc:9:18: error: expected ':' before ';' token
    9 | ?????cin>>a>>b>>c;
      |                  ^
      |                  :
a.cc:9:18: error: expected primary-expression before ';' token
a.cc:9:18: error: expected ':' before ';' token
    9 | ?????cin>>a>>b>>c;
      |                  ^
      |                  :
a.cc:9:18: error: expected primary-expression before ';' token
a.cc:9:18: error: expected ':' before ';' token
    9 | ?????cin>>a>>b>>c;
      |                  ^
      |                  :
a.cc:9:18: error: expected primary-expression before ';' token
a.cc:9:18: error: expected ':' before ';' token
    9 | ?????cin>>a>>b>>c;
      |                  ^
      |                  :
a.cc:9:18: error: expected primary-expression before ';' token
a.cc:10:1: error: expected primary-expression before '?' token
   10 | ?????if(a<b){
      | ^
a.cc:10:2: error: expected primary-expression before '?' token
   10 | ?????if(a<b){
      |  ^
a.cc:10:3: error: expected primary-expression before '?' token
   10 | ?????if(a<b){
      |   ^
a.cc:10:4: error: expected primary-expression before '?' token
   10 | ?????if(a<b){
      |    ^
a.cc:10:5: error: expected primary-expression before '?' token
   10 | ?????if(a<b){
      |     ^
a.cc:10:6: error: expected primary-expression before 'if'
   10 | ?????if(a<b){
      |      ^~
a.cc:10:6: error: expected ':' before 'if'
   10 | ?????if(a<b){
      |      ^~
      |      :
a.cc:10:6: error: expected primary-expression before 'if'
   10 | ?????if(a<b){
      |      ^~
a.cc:10:6: error: expected ':' before 'if'
   10 | ?????if(a<b){
      |      ^~
      |      :
a.cc:10:6: error: expected primary-expression before 'if'
   10 | ?????if(a<b){
      |      ^~
a.cc:10:6: error: expected ':' before 'if'
   10 | ?????if(a<b){
      |      ^~
      |      :
a.cc:10:6: error: expected primary-expression before 'if'
   10 | ?????if(a<b){
      |      ^~
a.cc:10:6: error: expected ':' before 'if'
   10 | ?????if(a<b){
      |      ^~
      |      :
a.cc:10:6: error: expected primary-expression before 'if'
   10 | ?????if(a<b){
      |      ^~
a.cc:10:6: error: expected ':' before 'if'
   10 | ?????if(a<b){
      |      ^~
      |      :
a.cc:10:6: error: expected primary-expression before 'if'
   10 | ?????if(a<b){
      |      ^~
a.cc:16:1: error: expected primary-expression before '?' token
   16 | ?????else
      | ^
a.cc:16:2: error: expected primary-expression before '?' token
   16 | ?????else
      |  ^
a.cc:16:3: error: expected primary-expression before '?' token
   16 | ?????else
      |   ^
a.cc:16:4: error: expected primary-expression before '?' token
   16 | ?????else
      |    ^
a.cc:16:5: error: expected primary-expression before '?' token
   16 | ?????else
      |     ^
a.cc:16:6: error: expected primary-expression before 'else'
   16 | ?????else
      |      ^~~~
a.cc:16:6: error: expected ':' before 'else'
   16 | ?????else
      |      ^~~~
      |      :
a.cc:16:6: error: expected primary-expression before 'else'
   16 | ?????else
      |      ^~~~
a.cc:16:6: error: expected ':' before 'else'
   16 | ?????else
      |      ^~~~
      |      :
a.cc:16:6: error: expected primary-expression before 'else'
   16 | ?????else
      |      ^~~~
a.cc:16:6: error: expected ':' before 'else'
   16 | ?????else
      |      ^~~~
      |      :
a.cc:16:6: error: expected primary-expression before 'else'
   16 | ?????else
      |      ^~~~
a.cc:16:6: error: expected ':' before 'else'
   16 | ?????else
      |      ^~~~
      |      :
a.cc:16:6: error: expected primary-expression before 'else'
   16 | ?????else
      |      ^~~~
a.cc:16:6: error: expected ':' before 'else'
   16 | ?????else
      |      ^~~~
      |      :
a.cc:16:6: error: expected primary-expression before 'else'
   16 | ?????else
      |      ^~~~
a.cc:18:1: error: expected primary-expression before '?' token
   18 | ????return 0;
      | ^
a.cc:18:2: error: expected primary-expression before '?' token
   18 | ????return 0;
      |  ^
a.cc:18:3: error: expected primary-expression before '?' token
   18 | ????return 0;
      |   ^
a.cc:18:4: error: expected primary-expression before '?' token
   18 | ????return 0;
      |    ^
a.cc:18:5: error: expected primary-expression before 'return'
   18 | ????return 0;
      |     ^~~~~~
a.cc:18:5: error: expected ':' before 'return'
   18 | ????return 0;
      |     ^~~~~~
      |     :
a.cc:18:5: error: expected primary-expression before 'return'
   18 | ????return 0;
      |     ^~~~~~
a.cc:18:5: error: expected ':' before 'return'
   18 | ????return 0;
      |     ^~~~~~
      |     :
a.cc:18:5: error: expected primary-expression before 'return'
   18 | ????return 0;
      |     ^~~~~~
a.cc:18:5: error: expected ':' before 'return'
   18 | ????return 0;
      |     ^~~~~~
      |     :
a.cc:18:5: error: expected primary-expression before 'return'
   18 | ????return 0;
      |     ^~~~~~
a.cc:18:5: error: expected ':' before 'return'
   18 | ????return 0;
      |     ^~~~~~
      |     :
a.cc:18:5: error: expected primary-expression before 'return'
   18 | ????return 0;
      |     ^~~~~~