6 : C Program to Calculate Area of Rectangle

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This program calculates the area of rectangle based on length and breadth entered by the user.

Variables :

1. length : (Datatype int) : to represent the length of rectangle.

2. breadth : (Datatype int) : to represent the breadth of rectangle.

3. area : (Datatype long) : to store the result of area of the rectangle 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 screen and %ld for long. \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 and %ld for long.







Formula :

Area of Rectangle : length x breadth


/*
 * 1000+ C programs + tutorials
 *
 *
 * 6_calculate_area_of_rectangle.c
 *
 *  Created on: Oct 20, 2014
 *      Author: Code2care.org
 */

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

void main() {

    int length;
    int breadth;
	long area;

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

	printf(" Enter the Length of a Rectangle : ");
	scanf("%d", &length);
    
    
    printf("\n\n Enter the Breadth of a Rectangle : ");
	scanf("%d", &breadth);
    

	area = length*breadth;


	printf("\n\n Area of Rectangle with Length as %d and Breadth as %d  = %ld \n\n",length,breadth,area);

//	getch();


}




Without using variable area 


/*
 * 1000+ C programs + tutorials
 *
 *
 * 6_calculate_area_of_rectangle.c
 *
 *  Created on: Oct 20, 2014
 *      Author: Code2care.org
 */

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

void main() {

    int length,breadth;

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

	printf(" Enter the Length of a Rectangle : ");
	scanf("%d", &length);  
    
    printf("\n\n Enter the Breadth of a Rectangle : ");
	scanf("%d", &breadth);

	printf("\n\n Area of Rectangle with Length as %d and Breadth as %d  = %ld \n\n",length,breadth,length*breadth);

//	getch();


}








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