Define an average function that takes 4 arguments, calculates the average of the 4 numbers passed to it, and returns the result back to the caller. Capture the 4 values from the user in main() and pass them to the function average. Call the average function from main. Print the results returned in the main function. Call the average function three more times with three more sets of four numbers and return the results back to the caller. Save the return values in variables in main(). Pass all four return values saved in main() back to the average function as arguments to calculate the average of the averages and return the result to main() which will print the final result ( average of the averages).

Part d: float check string has a method s.isdigit() that returns true if string s contains only digits and false otherwise, i.e. s is a string that represents an integer. write a function named float_check that takes one parameter that is a string and returns true if the string represents a float and false otherwise. for the purpose of this function we define a float to be a string of digits that has at most one decimal point. note that under this definition an integer argument will return true. remember “edge cases” such as “45.” or “.45”; both should return true. for example: float_check('1234') returns true float_check('123.45') returns true float_check('123.45.67') returns false float_check('34e46') returns false float_check('.45') returns true float_check('45.') returns true float_check('45..') returns false