strcmp behaviour

Question

When I run the following code:

#include 

int main(int argc, char *argv[])
{
    int p = 0;

    p = strcmp(NULL,\"foo\");

    return 0;
}
         


        

Answer 1

You need to:

• Include the proper headers, or declare functions manually. For strcmp(), you need .
• Not pass an invalid pointer such as NULL to strcmp(), since it doesn't protect against it and will dereference the pointer, thus causing undefined behavior in your program.