Case Insensitive Comparison Write a function int icompare (std: string first, std: string second) which returns a negative number if the first string comes before the second alphabetically, returns 0 if both strings are equal, and a positive number if the second string comes after the second alphabetically. This function should compare strings ignoring case differences, i.e. "Hello" = = "hello" or in other words icompare("Hello", "hello") ==0. Note: This function behaves similar to compare from the standard library. 20 points Find String Write a function bool contains(std::string reference, std::string value) which returns true if the reference string contains value within it. For example contains("Hello, World", "lo") true but contains("Hello, World", "lo Wo") false. Note: This function behaves just like contains from the standard library, however you may not use this function in your implementation. You may not use any of the find functions either