Calculate Area of Square


This C Program calculates Area of a Square based on the side of Square entered by the user.

Variables:

1. side: (Datatype int) : to represent the side of square.

2. area: (Datatype int) : to store the result of the area of the square being computed.

Functions:

printf() : is used to display something on the console/screen. Format specifier %d in printf function is used to display a int variable on scree. \n is used to add a newline

scanf() : is used to fetch data inputted by the user on the console/screen using keyboard. %d in scanf is indicates that inputted text is of type int.

Formula:

Area of Square : (side)2

/*
 * 1000+ C programs + tutorials
 *
 *
 * 5_calculate_area_of_square.c
 *
 *  Created on: Oct 20, 2014
 *      Author: Code2care.org
 */

#include <stdio.h>
//#include <conio.h>

void main() {

    int side;
	int area;

//	clrscr();
	printf("Program to calculate Area of a Square :  \n\n");

	printf("Enter the side of a square : ");
	scanf("%d", &side);

	area = side*side;


	printf("\n\nArea of square with side %d = %ld \n\n",side,area);

//	getch();


}
Output:
Program to calculate Area of a Square :
Enter the side of a square: 20
Area of a square with side 20 = 400
Without using the variable area
/*
 * 1000+ C programs + tutorials
 *
 *
 * 5_calculate_area_of_square.c
 *
 *  Created on: Oct 20, 2014
 *      Author: Code2care.org
 */

#include <stdio.h>
//#include <conio.h>

void main() {

    int side;

//	clrscr();
	printf("Program to calculate Area of a Square :  \n\n");

	printf("Enter the side of a square : ");
	scanf("%d", &side);

	printf("\n\nArea of square with side %d = %ld \n\n",side,side*side);

//	getch();


}

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