1 /* @(#)strcmp.c 4.1 (Berkeley) 12/21/80 */ 2 /* 3 * Compare strings: s1>s2: >0 s1==s2: 0 s1<s2: <0 4 */ 5 6 strcmp(s1, s2) 7 register char *s1, *s2; 8 { 9 10 while (*s1 == *s2++) 11 if (*s1++=='\0') 12 return(0); 13 return(*s1 - *--s2); 14 } 15