C++ system function doesn't accept string?

Question

#include<iostream>
#include<windows.h>
#include<string.h>
using namespace std;
main()
{
    string kelime="dir";
    system(kelime);
}

if i do like this: char kelime[10]="dir";

It is working but i want to do it with string? What is the problem, how can I do it?

your compiler must be ancient for string.h to have std::string. — StoryTeller - Unslander Monica
– StoryTeller - Unslander Monica, Commented Dec 25, 2016 at 15:48

Jonathon Reinhart · Accepted Answer · 2016-12-25 14:59:22Z

4

system(kelime.c_str());

system() (and many other APIs) are designed to be called from C, and take so-called C-strings, which are a NUL-terminated array of single-byte ASCII characters.

Use std::string::c_str() to get a C string from your C++ std::string.

answered Dec 25, 2016 at 14:59

Jonathon Reinhart

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1 Comment

teoman Over a year ago

I did not kno that. Thank you for explaining.

Peter VARGA · Accepted Answer · 2016-12-25 15:00:20Z

0

Use kelime.c_str() to access the old char style

answered Dec 25, 2016 at 15:00

Peter VARGA

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