Case Insensitive String comp in C

Question

I have two postcodes char* that I want to compare, ignoring case. Is there a function to do this?

Or do I have to loop through each use the tolower func

Answer 1

As others have stated, there is no portable function that works on all systems. You can partially circumvent this with simple ifdef:

#include 

#ifdef _WIN32
#include 
#define strcasecmp _stricmp
#else // assuming POSIX or BSD compliant system
#include 
#endif

int main() {
    printf("%d", strcasecmp("teSt", "TEst"));
}