Syntax
#include <string.h>
int strncmp(const char *str1, const char *str2, int n)
Arguments
str1 pointer to the first character string
str2 pointer to the second character string
n number of characters to compare (the length of the string segment)
Return Value
A value less than 0
str1 is lexicographically less than str2
A value equal to 0
str1 is equal to str2
A value greater than 0
str1 is greater than str2
Description
It compares at most n characters lexicographically from str1 to at most n characters from str2.