A simple measurement conversion utility.

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The unica was one-twelfth of a Roman foot. In 1324 the legal definition of the inch was set out in a statute of Edward II of England, defining it as "three grains of barley, dry and round, placed end to end, lengthwise". At various times the inch has also been defined as the combined lengths of 12 poppyseeds. Since 1959 the inch has been defined officially as 2.54cm.

Make

Write a program that converts feet to inches and inches to feet. The user should be prompted to enter the conversion they require.

Success Criteria

Remember to add a comment before a subprogram, selection or iteration statement to explain its purpose.

Create a subprogram called feet_to_inches that:

1. Takes a parameter feet and returns inches calculated as feet multipled by twelve.

Create a subprogram called inches_to_feet that:

1. Takes a parameter inches and returns feet calculated as inches divided by twelve.

Create a subprogram called menu that:

1. Prompts the user to enter their choice of 1. converting feet to inches, 2. inches to feet or 3. to quit.
2. The user should be continually prompted until they make a valid input 1, 2 or 3.

Create a subprogram called converter that:

1. Presents the menu to the user.
2. If the user chooses option 1 it asks the user to enter the number of feet as a decimal number and outputs the number of inches.
3. If the user chooses option 2 it asks the user to enter the number of inches and outputs the number of feet.
4. If the user chooses option 3 it outputs, “Goodbye”

Complete the main program so that:

1. It calls the converter subprogram.

Typical inputs and outputs from the program would be:

1. Feet to inches
2. Inches to feet
3. Quit
Enter choice: 1
Enter the number of feet: 3
3.0 feet is 36.0 inches.

1. Feet to inches
2. Inches to feet
3. Quit
Enter choice: 2
Enter the number of inches: 72
72.0 inches is 6.0 feet.

1. Feet to inches
2. Inches to feet
3. Quit
Enter choice: 3
Goodbye

# Measurements program

# -------------------------
# Subprograms
# -------------------------
# Convert feet to inches
def feet_to_inches(feet):
    return feet * 12


# Convert inches to feet
def inches_to_feet(inches):
    return inches / 12


# Offer the conversion choice to the user
def menu():
    menu_choice = "0"
    # Iterate until a valid option is chosen
    while menu_choice < "1" or menu_choice > "3":
        print("1. Feet to inches")
        print("2. Inches to feet")
        print("3. Quit")
        menu_choice = input("Enter choice: ")
    return menu_choice

# Call conversion routines from user's choice
def converter():
    option = menu()
    match option:
        # Feet to inches
        case "1":
            feet = float(input("Enter the number of feet: "))
            inches = feet_to_inches(feet)
            print(feet, "feet is", inches, "inches.")
        # Inches to feet
        case "2":
            inches = float(input("Enter the number of inches: "))
            feet = inches_to_feet(inches)
            print(inches, "inches is", feet, "feet.")
        # Quit
        case "3":
            print("Goodbye")
    

# -------------------------
# Main program
# -------------------------
converter()