Question

I have a C linux function which has the following code:

void A (char *s1, char *s2)
{
...
*s2 = NULL;
...
}

in this function I put values into s2, and at the end put NULL.

the code:

*s2 = NULL

generates the following warning:
assignment makes integer from pointer without a cast

I want to fix my code, how can I do that?

thanks

Answer 1

Your system appears to have NULL defined as something like (void *)0. That means your assignment is doing just what the warning says – making an integer from a pointer without a cast. You don’t want to put NULL into a char variable anyway – you are probably looking for:

*s2 = '\0';