Language: C++


#include<bits/stdc++.h>

int main()
{
	int n;
	int ans=0;
	cin>>n;
	if(n<=105)
	{
		ans=1;
		cout<<ans<<endl;
	}
	else if(n<=135)
	{
		ans=2;
		cout<<ans<<endl;
	}
	else if(n<=165)
	{
		ans=3;
		cout<<ans<<endl;
	}
	else if(n<=189)
	{
		ans=4;
		cout<<ans<<endl;
	}
	else if(n<=195)
	{
		ans=5;
		cout<<ans<<endl;
	}
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:9: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    8 |         cin>>n;
      |         ^~~
      |         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:12:17: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
   12 |                 cout<<ans<<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:12:28: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
   12 |                 cout<<ans<<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:17:17: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
   17 |                 cout<<ans<<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:17:28: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
   17 |                 cout<<ans<<endl;
      |                            ^~~~
      |                            std::endl
/usr/include/c++/14/ostream:744:5: note: 'std::endl' declared here
  744 |     endl(basic_ostream<_CharT, _Traits>& __os)
      |     ^~~~
a.cc:22:17: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
   22 |                 cout<<ans<<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:22:28: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
   22 |                 cout<<ans<<endl;
      |                            ^~~~
      |                            std::endl
/usr/include/c++/14/ostream:744:5: note: 'std::endl' declared here
  744 |     endl(basic_ostream<_CharT, _Traits>& __os)
      |     ^~~~
a.cc:27:17: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
   27 |                 cout<<ans<<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:27:28: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
   27 |                 cout<<ans<<endl;
      |                            ^~~~
      |                            std::endl
/usr/include/c++/14/ostream:744:5: note: 'std::endl' declared here
  744 |     endl(basic_ostream<_CharT, _Traits>& __os)
      |     ^~~~
a.cc:32:17: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
   32 |                 cout<<ans<<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:32:28: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
   32 |                 cout<<ans<<endl;
      |                            ^~~~
      |                            std::endl
/usr/include/c++/14/ostream:744:5: note: 'std::endl' declared here
  744 |     endl(basic_ostream<_CharT, _Traits>& __os)
      |     ^~~~