Well I have searched about this warning and they really had some mistake in code,but here is something very unexpected I could not figure out . We do expect strlen(x) to be an integer but what does this warning tell me? How couldnt strlen be int.Well I have searched about this warning and the
阅读背景：
格式' %d '期望类型' int '的参数，但参数2有类型' size_t ' [-Wformat]
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