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* Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
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curl_strequal, curl_strnequal - case insensitive string comparisons

#include <curl/curl.h>

int curl_strequal(char *str1, char *str2);
int curl_strnequal(char *str1, char *str2, size_t length);

The curl_strequal() function compares the two strings str1 and str2, ignoring the case of the characters. It returns a non-zero (TRUE) integer if the strings are identical. The curl_strnequal() function is similar, except it only compares the first length characters of str1. These functions are provided by libcurl to enable applications to compare strings in a truly portable manner. There are no standard portable case insensitive string comparison functions. These two work on all platforms.

if(curl_strequal(name, input))
 printf("Name and input matches\\n");
if(curl_strnequal(name, input, 5))
 printf("Name and input matches in the 5 first bytes\\n");

Always Non-zero if the strings are identical. Zero if they are not. strcmp "(3), " strcasecmp "(3)"