Language: C++

//int1_topic2_a
#include <bits/stdc++.h>
using namespsce std;


int main(){
  int a,b;
  cin>>a>>b;

  if( a < b ) cout<<"a < b"<<endl;
  if( a > b ) cout<<"a > b"<<endl;
  if( a == b ) cout<<"a == b"<<endl;


return 0;
}


Compiler output:
a.cc:3:7: error: expected nested-name-specifier before 'namespsce'
    3 | using namespsce std;
      |       ^~~~~~~~~
a.cc: In function 'int main()':
a.cc:8:3: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    8 |   cin>>a>>b;
      |   ^~~
      |   std::cin
In file included from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:146,
                 from a.cc:2:
/usr/include/c++/14/iostream:62:18: note: 'std::cin' declared here
   62 |   extern istream cin;           ///< Linked to standard input
      |                  ^~~
a.cc:10:15: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
   10 |   if( a < b ) cout<<"a < 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:10:30: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
   10 |   if( a < b ) cout<<"a < b"<<endl;
      |                              ^~~~
      |                              std::endl
In file included from /usr/include/c++/14/istream:41,
                 from /usr/include/c++/14/sstream:40,
                 from /usr/include/c++/14/complex:45,
                 from /usr/include/c++/14/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:127:
/usr/include/c++/14/ostream:744:5: note: 'std::endl' declared here
  744 |     endl(basic_ostream<_CharT, _Traits>& __os)
      |     ^~~~
a.cc:11:15: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
   11 |   if( a > b ) cout<<"a > 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:11:30: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
   11 |   if( a > b ) cout<<"a > b"<<endl;
      |                              ^~~~
      |                              std::endl
/usr/include/c++/14/ostream:744:5: note: 'std::endl' declared here
  744 |     endl(basic_ostream<_CharT, _Traits>& __os)
      |     ^~~~
a.cc:12:16: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
   12 |   if( a == b ) cout<<"a == 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:12:32: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
   12 |   if( a == b ) cout<<"a == b"<<endl;
      |                                ^~~~
      |                                std::endl
/usr/include/c++/14/ostream:744:5: note: 'std::endl' declared here
  744 |     endl(basic_ostream<_CharT, _Traits>& __os)
      |     ^~~~