fopen visual studio 2015社区版的标头

Question

As per MSDN: https://msdn.microsoft.com/en-us/library/yeby3zcb.aspx

for "fopen" I need to include required header : <stdio.h>

However, my below code gives error: "identifier fopen is unidentified"

#include "stdafx.h"
#include<cstdio>
#include<cstdlib>
int main()
{
char * buffer = NULL;
size_t size = 0;
FILE *fp = fopen("C:\Documents and Settings\psps.txt", "r");

return 0;
}

What should I include to perform file-related operation?

Answer 1

You could try including <stdio.h> as you mentioned. Or, you could include <cstdio> as you're currently doing and then use std::fopen() instead.

When C++ headers wrap the standard library functions in the std namespace.

The other option is to include <fstream> and learn your way around the C++ file streaming classes (see http://www.cplusplus.com/doc/tutorial/files/ ).