Write function headers for the functions described below: $($i$)$ The function check has two parameters. The first parameter should be an integer number and the second parameter a floating point number. The function returns no value. $($ii$)$ The function mu$1$t has two floating point numbers as parameters and returns the result of multiplying them. $($iii$)$ The function time inputs seconds, minutes and hours and returns them as parameters to its calling function. $($iv$)$ The function countchar returns the number of occurrences of a character in a string, both provided as parameters.