strncmp
语法:
#include <string.h>
int strncmp( const char *str1, const char *str2, size_t count );
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功能：比较字符串str1 和 str2中至多count个字符。返回值如下：
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返回值 |
解释 |
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less than 0 |
str1 is less than str2 |
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equal to 0 |
str1 is equal to str2 |
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greater than 0 |
str1 is greater than str2 |
如果参数中任一字符串长度小于count, 那么当比较到第一个空值结束符时，就结束处理。