Question

Define a function named SwapValues that takes four integers as parameters and swaps the first with the second, and the third with the fourth values. Then write a main program that reads four integers from input, calls function SwapValues() to swap the values, and prints the swapped values on a single line separated with spaces.

Answer 1

The program is an illustration of functions

What are functions?

Functions are named program statements that are executed when called or evoked

The actual program

The program written in Python, where comments are used to explain each line is as follows:

#This defines the function

def SwapValues(a, b, c, d):

   #This returns the swapped values

   return b, a, d, c

#The following gets input for the four integers

a = int(input())

b = int(input())

c = int(input())

d = int(input())

#This calls the SwapValues function

a, b, c, d = SwapValues(a, b, c, d)

#This prints the swapped values

print(a,b,c,d)

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