Question

(Reverse number) Write a program that prompts the user to enter a four-digit inte- ger and displays the number in reverse order. Here is a sample run:

Answer 1

Answer:

The program in Python is as follows:

num = int(input("4 digit number: "))

numstr = str(num)

if(len(numstr)!=4):

    print("Number must be 4 digits")

else:

    numstr = numstr[::-1]

    num = int(numstr)

    print(num)

Explanation:

This prompts user for input

num = int(input("4 digit number: "))

This converts the input number to string

numstr = str(num)

This checks if number of digits is or not 4

if(len(numstr)!=4):

If not, the following message is printed

    print("Number must be 4 digits")

else:

If digits is 4,

This reverses the string

    numstr = numstr[::-1]

This converts the reversed string to integer

    num = int(numstr)

This prints the reversed number

    print(num)