Check out example codes for "strncmp c". It will help you in understanding the concepts better.
Code Example 1
int strncmp(const char *str1, const char *str2, size_t n)
//if Return value < 0 then it indicates str1 is less than str2.
//if Return value > 0 then it indicates str2 is less than str1.
//if Return value = 0 then it indicates str1 is equal to str2.
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