Question

Possible Duplicate:
strtok giving Segmentation Fault

Why do i get segfault using this code ?

void test(char *data)
{
    char *pch;
    pch = strtok(data, " ,.-"); // segfault
    while (pch != NULL)
    {
        printf("%s\n", pch);
        pch = strtok(NULL, " ,.-");
    }

    return NULL;
}

char *data = "- This, a sample string.";
test(data);

Answer 1

strtok() modifies the original string. You are passing it a constant source string that cannot be modified.

Try this instead:

char *data = strdup("- This, a sample string.");
test(data);