accumulator = 0

while True:
    print("Accumulator:", accumulator)
    print("Select:")
    print("  1: clear")
    print("  2: add")
    print("  3: subtract")
    print("  4: multiply")
    print("  5: quit")

    choice = int(input("Choice: "))

    if choice == 1: accumulator = 0
    if choice == 2: accumulator += int(input("add: "))
    if choice == 3: accumulator -= int(input("subtract: "))
    if choice == 4: accumulator *= int(input("multiply by: "))
    if choice == 5: break
