Program 64 - CSU1128 - CSE 2026 - Shoolini University

Program to demonstrate the macro in C by finding the square of the value entered by the user.

Explanation

The program demonstrates the use of macros in C by calculating the square of a value entered by the user using the SQUARE macro.

Header

The code begins with including the standard input-output header file using #include <stdio.h> and defining the SQUARE macro.

Macro Definition

The program defines a macro SQUARE to calculate the square of a number:

#define SQUARE(x) ((x) * (x)): Defines the macro which takes one parameter x and returns its square.

Variable Declaration

The main() function is defined, and a variable is declared:

int x;: Variable to hold the value entered by the user.

Program Description

The program prints a description message for the user to understand its functionality.

User Input

The user is prompted to enter the value of x:

printf("Enter the value for x: ");: Prompts the user to enter the value of x.
scanf("%d", &x);: Reads the value entered by the user and stores it in x.

Calculate Square

The program calculates the square of the value using the SQUARE macro:

int y = SQUARE(x);: Calls the SQUARE macro with x as the argument and stores the result in y.

Output Result

The program prints the square of the value:

printf("The square of %d is %d\n", x, y);: Prints the value of x and its square y.

Program End

The program ends with return 0; to indicate successful execution.

Code

                    
/*
 * -----------------------------------------------------------
 * Logic Building with Computer Programming (CSU1128)
 * Instructor: Dr. Pankaj Vaidya | Author: Divya Mohan
 * 
 * This code is a part of the educational initiative by dmj.one
 * with aim of empowering and inspiring learners in the field of
 * Computer Science and Engineering through the respective courses.
 * 
 * (c) 2022, Divya Mohan for dmj.one. All rights reserved.
 * -----------------------------------------------------------
 */

#include <stdio.h>
#define SQUARE(x) ((x) * (x))
int main()
{
    printf("\n\n Program to demonstrate the macro in C by finding the square of the value entered by the user. \n\n");

    // Declare a variable and calculate its square using the SQUARE macro
    int x;

    printf("Enter the value for x: ");
    scanf("%d", &x);

    int y = SQUARE(x);
    // Print the square of x
    printf("The square of %d is %d\n", x, y);

    return 0;
}

Output

Program to demonstrate the macro in C by finding the square of the value entered by the user.

Enter the value for x: 5
The square of 5 is 25