strncpy

strncmp

#include <string.h>int strncmp(const char *str1, const char *str2, size_t count);

The strncmp( ) function lexicographically compares not more than count characters from the two null-terminated strings and returns an integer based on the outcome, as shown here:

Value	Meaning
Less than zero	str1 is less than str2
Zero	str1 is equal to str2
Greater than zero	str1 is greater than str2

If there are less than count characters in either string, the comparison ends when the first null is encountered.

Related functions are strcmp( ), strnchr( ), and strncpy( ).