What's wrong with using the atof function?

Question

int main()
{
    char str[10]="3.5";
    printf("%lf",atof(str));
    return 0;
}

This is simple code I am testing at ideone.com. I am getting output as

-0.371627

+3

Naved alam Feb 17 13 at 5:11 am

2 answers

+1

austin Feb 17 13 at 5:13 am

FatalError · Accepted Answer · 2013-02-17T05:15:59+0000

You have not included stdlib.h. Add correct includes:

#include <stdio.h>
#include <stdlib.h>

int main()
{
    char str[10]="3.5";
    printf("%lf",atof(str));
    return 0;
}

Without including stdlib.h, it is atof()

declared implicitly and the compiler assumes that it returns int.