Trouble with definitions in header file

[MatthewRock]

Hello,
in my project I've created header file, and while compiling compiler shows an error. I have no idea how to fix it.

Functions.h

#ifndef FUNCTIONS_H_INCLUDED
#define FUNCTIONS_H_INCLUDED
#include <string>
void pause();
void niepoludnie();
void niepolnoc();
void niezachod();
void niewschod();
void parse(string &source);
void parse(char &source);
#endif // FUNCTIONS_H_INCLUDED 

Compiler shows following errors:

C:\Users\Malice\Desktop\SAG\functions.h|9|error: variable or field 'parse' declared void|
C:\Users\Malice\Desktop\SAG\functions.h|9|error: 'string' was not declared in this scope|
C:\Users\Malice\Desktop\SAG\functions.h|9|error: 'source' was not declared in this scope|
||=== Build finished: 3 errors, 0 warnings ===|

What am I doing wrong?

[gelatine]

i believe you need std::string or add using namespace std
that should solve the second warning.

[MatthewRock]

Silly me. Thank you, it works now.

[zb0S216C]

You do not want to be using namespace in any header file because it can cause identifier conflicts. It's best to fully qualify standard types inside header files.

_Wazzak