date and time created 88/10/19 19:55:11 by bostic

[unix-history] / usr / src / games / monop / strcmp.c

# include       <stdio.h>
# include       <ctype.h>

# define        reg     register

# define        makelower(c)    (isupper(c) ? tolower(c) : c)

/*
* Compare strings:  s1>s2: >0  s1==s2: 0  s1<s2: <0
*/

strcmp(s1, s2)
reg char        *s1, *s2; {

       while (makelower(*s1) == makelower(*s2)) {
               if (*s1 == '\0')
                       return 0;
               s1++, s2++;
       }
       return *s1 - *s2;
}