Compares, with case insensitivity, a specified number of characters in one string to another string.
#include <string.h> int strnicmp ( const char *s1, const char *s2, size_t len);
(IN) Points to a string to compare.
(IN) Points to a string to compare.
(IN) Specifies the number of characters to compare.
Returns 0 if the two strings match. Otherwise, returns an integer less than or greater than 0, depending on whether s1 is lexicographically less than or greater than s2.
The strnicmp function compares, with case insensitivity, the string pointed to by s1 to the string pointed to by s2, for at most len characters.