find area and perimeter of rectangle

Program to find area and perimeter of rectangle

Let’s see how to write this C program

#include<stdio.h>

#include<conio.h>

int main()

{

int length,width;

int perimeter,area;

printf("enter length and width of rectangle \n");

scanf("%d %d",&length,&width);

perimeter=2*(length+width);

area=length*width;

printf("\n perimeter is = %d \n area is = %d",perimeter,area);

getch();

return 0;

}

Explanation of the program

int length,width;

int perimeter,area;

here we are declaring four variables  as

length to store length of a rectangle.

width to store width of a rectangle.      

perimeter to store perimeter after calculating it. 

area to store area after calculating it. 

scanf("%d %d",&length,&width);

use to store the user desired values in the variables of length and width.

perimeter=2*(length+width);

basic mathematical expression to calculate perimeter of the rectangle it is equivlant to { preimeter=2(length+width) }.

area=length*width;

basic mathematical expression to calculate perimeter of the rectangle it is equivlant to { area=length x width }.

printf("\n perimeter is = %d \n area is = %d",perimeter,area);

this statement will going to print “perimeter is = “ perimeter_value then change line and print “area is = “ area_value

%d

This tells the compiler that we are going to display or read the integer number.

\n  or endl

This signifies the endline or we can say change line.

In this program it is responsible to change the line after printing the perimeter of rectangle.

Getch(); and return 0;

We already discussed this click here to move back.

Pictures of program:

Step 1:  Create the program:-

Step 2: output 

Note:  if any of the programmer is facing the problem of reappering of the previous screen again and again

He can use the function clrscr();

It present in the conio.h header file

After declaring the variables