c program

Exercise 2 Twice by Value vs. by Reference

Exercise Objectives

• Creating, initializing, and using pointers
• Function call by Value vs. call by Reference

Problem Description

Write and run a C program that performs the following:

• Asks the user to input an integer number (n).
• Prints the value of n
• Passes the number to a function named twiceByValue, which computes the twice of the number. The function then returns the result to the main function to be printed.
• In the main function, print the value of n
• Passes the number to a function named twiceByRef, which computes the twice of the number using call by reference and stores the value in the parameter. The function prints the result.
• In the main function, Reprint the value ofn

Sample run

Input an integer: 5

The function twiceByValue return 10

The value on n in the main is 5

The function twiceByRef prints: 10

The value on n in the main is 10