strcmp函数解释

strcmp函数是C语言中的一个字符串比较函数，它用于比较两个字符串的大小关系。该函数的原型为extern int strcmp(const char *s1,const char * s2)，其中s1和s2是要进行比较的两个字符串。strcmp函数会按照字典顺序比较两个字符串的字符，并返回一个整数值来表示比较结果。如果s1小于s2，返回一个负数；如果s1大于s2，返回一个正数；如果s1等于s2，返回0。因此，可以通过判断strcmp函数的返回值来确定两个字符串的大小关系。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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