Program:


def add(x, y):
   return x + y
def subtract(x, y):
   return x - y

# This function multiplies two numbers
def multiply(x, y):
   return x * y

# This function divides two numbers
def divide(x, y):
   return x / y

print("********Select operation*********")
print("1.Add")
print("2.Subtract")
print("3.Multiply")
print("4.Divide")

# Take input from the user
choice = input("Enter choice(1/2/3/4):")


num1 = int(input("Enter first number: "))
num2 = int(input("Enter second number: "))

if choice == '1':
   print("\t-->>",num1,"+",num2,"=", add(num1,num2))

elif choice == '2':
   print("\t-->>",num1,"-",num2,"=", subtract(num1,num2))

elif choice == '3':
   print("\t-->>",num1,"*",num2,"=", multiply(num1,num2))

elif choice == '4':
   print("\t-->>",num1,"/",num2,"=", divide(num1,num2))
else:
   print("Invalid input")

Expected O/P:

1.
********Select operation*********
1.Add
2.Subtract
3.Multiply
4.Divide
Enter choice(1/2/3/4):1
 Enter first number: 45
 Enter second number: 665
-->> 45 + 665 = 710
2.
********Select operation*********
1.Add
2.Subtract
3.Multiply
4.Divide
Enter choice(1/2/3/4):4
 Enter first number: 85
 Enter second number: 23
-->> 85 / 23 = 3.6956521739130435