strcmp函数作用

strcmp函数是用来比较两个字符串的函数。它会比较字符串1和字符串2的内容，并返回一个整数值。如果字符串1和字符串2相同，返回值为0；如果字符串1大于字符串2，则返回值大于0；如果字符串1小于字符串2，则返回值小于0。strcmp函数需要包含<string.h>头文件才能使用。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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