Using C program. I want just function definitions.

d. int strCompare(const char *str, const char *str2) - Write your own string comparison function that compares two strings for equality. You cannot use the string comparison functions. Make sure the compare function is case insensitive. Return 0 if the two strings are equal and 1 if they are not. For example, a call to this function on the string "Hello world", and "Hello World" will return 0