Write a program with the following software architecture PROGRAM main() PROCEDURE F1(IN prompt: string,OUT i: int) PROCEDURE F2(IO i1: int,IO i2: int) PROCEDURE F3(IN label: string,IN i: int) such that (1) the PROCEDURE F1() is called by the PROGRAM module main() to input values for main() variables x and y one at a time from the program user; (2) the PROCEDURE F2() is called by the PROGRAM module main() to swap the values of the main() variables x and y; and (3) the PROCEDURE F3() is called by the PROGRAM module main() to print the labelled values of the main() variables x and y one at a time on separate lines