Question

This Python module will be menu driven

and use conditions to check user input in order to

determine which operation to perform based on the

user’s menu selection.

The output should look like the attached example output.

The menu will have the following selections

(NOTE: all menu selections by the user should not be case

sensitive)

:

1.

‘CC’ – Character Count

a.

This operation will prompt the user for a string

b.

The number if characters will be counted in the string

c.

Display the number of characters in the string to the user

2.

‘RV’ – Reverse

a.

This operation will prompt the user for a string

b.

The string will be reversed

c.

Display the reversed string to the user

3.

‘M5’ – Multiply by 5

a.

This operation will prompt the user for a choice between ‘N’ for a number and ‘S’ for a String

b.

If ‘N’ is entered:

i.

Prompt the user to enter a number

ii.

The number will then be multiplied by 5

iii.

Display the result of multiplying the number by 5 to the user

c.

If ‘S’ is entered:

i.

Prompt the user to enter a string

ii.

The string will then be multiplied by 5

iii.

Display the result of multiplying the string by 5 to the user

d.

If any character other than ‘N’ or ‘S’ is entered:

i.

Display the message ‘You entered an invalid option!’ to the user

e.

NOTE: all input by the user for this menu option should not be case sensitive

4.

‘MC’

–

Middle Character(s)

a.

This operation will prompt the user for a string

b.

If the

string has an odd number of characters:

i.

Determine the middle character of the string

ii.

Display the single middle character to the user

c.

If the string has an even number of characters:

i.

Determine the middle characters of the string

ii.

Display the 2 middle characters to the user

5.

‘EX' – Exit

a. This operation will display ‘Goodbye!’ to the user

NOTE

:

If any menu selection other than ‘CC’, ‘RV’, ‘M5’, ‘MC’, or ‘EX’ or the lowercase version of these is entered:

• Display the message ‘You entered an invalid menu selection’ to the user

• At the end of the Python module print the string ‘End of Project #3'

Answer 1

THE PYTHON CODE IS :

# character count
def CC():
    print("Input String")
    string = input()
    # len is used to find length of a string in python
    number_of_characters = len(string)
    print("Number of characters in the string is :", number_of_characters,"
")


# Reverse String
def RV():
    print("Input String")
    string = input()
    reversed_string = ""
    # iterate through all characters in the string and store it in
    # reversed manner in reversed_string
    for i in string:
        reversed_string = i + reversed_string
    print("The reversed string is :", reversed_string,"
")


# multiply by 5
def M5():
    print("Enter ‘N’ for a number and ‘S’ for a String")
    choice = str(input())
    if choice == 'N' or choice == 'n':
        print("Enter a number")
        n = int(input())
        n = n * 5
        print("The number multiplied by 5 is :", n,"
")
    elif choice == 'S' or choice == 's':
        print("Enter a string")
        s = input()
        s = s * 5
        print("The string multiplied by 5 is :", s,"
")
    else:
        print("You entered an invalid option!
")


# middle character(s)
def MC():
    print("Input String")
    string = input()
    mc = ''
    length = len(string)
    # // is used for integer division in python i.e.
    # 5/2 = 2.5 and 5//2 = 2 in python
    if length % 2 != 0:
        # middle character is in index = length//2 in a odd length string
        mc = string[length // 2]
        print("Middle Character :", mc,"
")
    else:
        # middle characters is in indexes = length//2-1 and length//2 in
        # an even length string
        mc = string[length // 2 - 1] + string[length // 2]
        print("Middle Characters :", mc,"
")


def main():
    choice = ""
    while True:
        print('Enter your choice !')
        print('Enter CC for Character Count .
Enter RV for Reverse .')
        print('Enter M5 for Multiply by 5 .
Enter MC for Middle Character(s) .')
        print('Enter EX to Exit .
')
        choice = input()
        if choice == 'CC' or choice == 'cc':
            CC()
        elif choice == 'RV' or choice == 'rv':
            RV()
        elif choice == 'M5' or choice == 'm5':
            M5()
        elif choice == 'MC' or choice == 'mc':
            MC()
        elif choice == 'EX' or choice == 'ex':
            print('Goodbye!')
            break;
        else:
            print('You entered an invalid menu selection ')
            break;
    print('End of Project #3')

if __name__ == '__main__':
    main()

CONSOLE INPUT AND OUTPUT OF THE PROGRAM :