Thread: Question about strcmp()

Theres an example on tutorialspoint.com that goes like this:

Code:

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

int main ()
{
   char str1[15];
   char str2[15];
   int ret;


   strcpy(str1, "abcdef");
   strcpy(str2, "ABCDEF");

   ret = strcmp(str1, str2);

   if(ret < 0)
   {
      printf("str1 is less than str2");
   }
   else if(ret > 0) 
   {
      printf("str2 is less than str1");
   }
   else 
   {
      printf("str1 is equal to str2");
   }
   
   return(0);
}

Why is the answer to this example: "str2 is less than str1"

When both strings are the same and only difference is one is uppercase. How does strcmp work here?

strcmp works on ANSI strings... so uppercase comes before lower case like in this table.

Ah, ok that makes sense. Thank you.

Windows has stricmp for case-insensitive compare (although they say it's deprecated in favour of _stricmp).
*nix has strcasecmp.
What exactly is upper or lower case depends on the locale.

You could of course write your own where you compare letters one by one applying toupper (or tolower) to each.