Simple Calculator Program in Python Using Function

A simple calculator program we wrote using Python and functions. The code is very simple and easy to understand.

I am currently accepting programming work, IT projects, school and application development, programming projects, thesis and capstone projects, IT consulting.

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Here in Bacolod I also accepting computer repair, networking and Arduino Project development at a very affordable price.

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Sample Program Output

Program Listing

# calculator.py

# Rollyn M. Moises and Jake R. Pomperada

# February 27, 2019    Wednesday

# Bacolod City, Negros Occidental

def menu():

    print();

    print("\t\t Simple Calculator Program");

    print();

    print("\tWritten By Rollyn M. Moises and Jake R. Pompreada")

    print();

    print("\t1. Addition");

    print("\t2. Subtraction");

    print("\t3. Multiplication");

    print("\t4. Division");

    print("\t5. Quit Program");

    print();

    return int(input("\tChoose your option: "));

def add(a, b):

    print();

    print("\t",a, "+", b, "=", a + b);

def sub(a, b):

    print();

    print("\t",a, "-", b, "=", a - b);

def mul(a, b):

    print();

    print("\t",a, "*", b, "=", a * b);

def div(a, b):

    print();

    print("\t",a, "/", b, "=", a / b);

loop = 1

choice = 0

while loop == 1:

    choice = menu()

    if choice == 1:

        print();

        add(int(input("\tAdd this: ")), int(input("\tto this: ")))

    elif choice == 2:

        print();

        sub(int(input("\tSubtract this: ")), int(input("\tfrom this: ")))

    elif choice == 3:

        print();

        mul(int(input("\tMultiply this: ")), int(input("\tby this: ")))

    elif choice == 4:

        print("\n");

        div(int(input("\tDivide this: ")), int(input("\tby this: ")))

    elif choice == 5:

        loop = 0

print();

print("\tThank you for using this program.");

print();

print("\tEND OF PROGRAM");