Exercise: Please make a file called find_one_char.cpp that contains a function that fits the following spec: (C++ please)

Name: find_one_char

2 Arguments: an array of characters arr, and a character c. (The type of arr is char[].)

Return: the first index where the char c can be found in arr, if at all (stop looking when you reach the null byte). Return the index of the null byte if c is not found in that range.

Example: if the character sequence is "hello", and we call find_one_char("hello", 'e'); then we return 1.

Example: if the character sequence is "hello", and we call find_one_char("hello", 'z'); then we return 5.