📄 strcmp.c
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# 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;}
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