Question

c89
gcc (GCC) 4.6.3

Hello,

I am getting a stack dump on *search = ‘\0’; I thought it was possible to nul terminate a string.

char *ptr_name = "hello@home";
char *search = ptr_name;

search = strchr(ptr_name, '@');
search++;
*search = '\0';

Many thanks for any suggestions,

Answer 1

char *ptr_name = "hello@home"; creates a string constant and that cannot be modified.

To get the result that you are expecting, you need to allocate memory for "hello@home" using an array char arr_name[] = "hello@home"; – or dynamically using malloc during runtime.

Your program should be as follows:

#include <stdio.h>
#include <string.h>

int main()
{
    char arr_name[] = "hello@home";
    char *search = arr_name;

    printf("%s \n", arr_name);
    search = strchr(arr_name, '@');
    search++;
    *search = '\0';

    printf("%s \n", arr_name);

    return 0;
}

Output:

$ ./a.out 
hello@home 
hello@ 
$