Write a menu driven program to accept a number from the user and check whether it is a ‘BUZZ’ number or to accept any two numbers and print the ‘GCD’ of them.

(a) A BUZZ number is the number which either ends with 7 or divisible by 7.

(b) GCD (Greatest Common Divisor) of two integers is calculated by continued division method. Divide the larger number by the smaller; the remainder then divides the previous divisor. The process is repeated till the remainder is zero. The divisor then results the GCD.