C Program To Calculate Area of Circle & Rectangle

C programming ke jariye Circle aur rectangle ka area kaise find kiya jata hai , iske liye hum program write karane wale hai.

Formula:

Area of circle = pir²

Area of rectangle = length * breath

/* Program for area of circle */

#include<conio.h>

#include<stdio.h>

#define pi 3.14

void main ()

{

int r;

float area;

clrscr();

printf("\n Enter radius of circle ");

scanf("%d", &r);

area = pi * r *r ;

printf ("\n Area of circle =%f", area);

getch();

}

Output:

Enter radius of circle

5

Area of circle= 78.5

Program Rectangle ka area find karane ke liye:

/* Program for area of rectangle */

#include<conio.h>

#include<stdio.h>

void main ()

{

int l,b,area;

clrscr();

printf("\n Enter Length & Breadth of rectangle ");

scanf("%d%d", &l,&b ");

area = l*b;

printf("\n Area of rectangle=%d", area);

getch();

}

Output:

Enter Length & Breadth of rectangle

15

25

Area of rectangle= 375

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