A menu program to add ,subtract , multiply and division.

def add(x,y):
    return (x+y)
def substract(x,y):
    return (x-y)
def multiply(x,y):
    return (x*y)
def division(x,y):
    return (x/y)
print("Select opration")
print("1.Add")
print("2,Substract")
print("3.Multipy")
print("4.Divide")
choice=input(str("Enter the choice1/2/3/4:"))
num1=int(input("enter the first number:"))
num2=int(input("enter the second number:"))
if choice=='1':
    print(num1,"+",num2,"=",add(num1,num2))
elif choice=="2":
    print(num1,"-",num2,"=",substract(num1,num2))
elif choice=='3':
    print(num1,"*",num2,"=",multiply(num1,num2))
elif choice=='4':
    print(num1,"/",num2,"=",division(num1,num2))
else:
    print("Invalid Input")