Language: C++

#include <iostream>
#include<string>

int main()
{
	string a;

	cin >> a;

	int lenge = a.size;

	int kaisu = 0;
	for (int i = 0; i < lenge; i++) {
		if (a[i] == 'o')
			kausu++;
	}
	if ((15 - lenge) >= (8 - kausu))
		cout << "YES" << endl;
	else
		cout << "NO" << endl;

	return 0;

}



Compiler output:
a.cc: In function 'int main()':
a.cc:6:9: error: 'string' was not declared in this scope
    6 |         string a;
      |         ^~~~~~
a.cc:6:9: note: suggested alternatives:
In file included from /usr/include/c++/14/iosfwd:41,
                 from /usr/include/c++/14/ios:40,
                 from /usr/include/c++/14/ostream:40,
                 from /usr/include/c++/14/iostream:41,
                 from a.cc:1:
/usr/include/c++/14/bits/stringfwd.h:77:33: note:   'std::string'
   77 |   typedef basic_string<char>    string;
      |                                 ^~~~~~
In file included from /usr/include/c++/14/bits/locale_classes.h:40,
                 from /usr/include/c++/14/bits/ios_base.h:41,
                 from /usr/include/c++/14/ios:44:
/usr/include/c++/14/string:76:11: note:   'std::pmr::string'
   76 |     using string    = basic_string<char>;
      |           ^~~~~~
a.cc:8:9: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    8 |         cin >> a;
      |         ^~~
      |         std::cin
/usr/include/c++/14/iostream:62:18: note: 'std::cin' declared here
   62 |   extern istream cin;           ///< Linked to standard input
      |                  ^~~
a.cc:8:16: error: 'a' was not declared in this scope
    8 |         cin >> a;
      |                ^
a.cc:15:25: error: 'kausu' was not declared in this scope; did you mean 'kaisu'?
   15 |                         kausu++;
      |                         ^~~~~
      |                         kaisu
a.cc:17:34: error: 'kausu' was not declared in this scope; did you mean 'kaisu'?
   17 |         if ((15 - lenge) >= (8 - kausu))
      |                                  ^~~~~
      |                                  kaisu
a.cc:18:17: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
   18 |                 cout << "YES" << 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:18:34: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
   18 |                 cout << "YES" << endl;
      |                                  ^~~~
      |                                  std::endl
/usr/include/c++/14/ostream:744:5: note: 'std::endl' declared here
  744 |     endl(basic_ostream<_CharT, _Traits>& __os)
      |     ^~~~
a.cc:20:17: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
   20 |                 cout << "NO" << 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:20:33: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
   20 |                 cout << "NO" << endl;
      |                                 ^~~~
      |                                 std::endl
/usr/include/c++/14/ostream:744:5: note: 'std::endl' declared here
  744 |     endl(basic_ostream<_CharT, _Traits>& __os)
      |     ^~~~