Menu Driven Program to Find Area of Square, Rectangle And Circle

AIM

To write a menu driven program for finding the area of a square , rectangle , and a circle

ALGORITHM

Step 1: Start

Step 2: Print choice square , rectangle , circle

Step 3: if square ,else go to  step 7

Step 4: read side

Step 5: a←s*s

Step 6:Print a

Step 7:if rectangle,else go to step 11

Step 8: read length and breadth

Step 9: a←lenght*breadth

Step 10: print a

Step 11: if circle,else go to step15

Step 12: read radius

Step 13: a←radius*radius*3.14

Step 14: print a

Step 15: print want to continue?

Step 16: if yes,go to step 1

Step 17: stop

PROGRAM

#include<stdio.h>

#include<conio.h>

void main()

{

     char t,n,y,Y;

   float radius,side,length,breadth,pi;

    int ch;

    pi=3.14;

     do

   {

    printf("\nMENU\n1)Area of square\n2)Area of rectangle\n3)Area of circle\nEnter choice:");

    scanf("%d",&ch);

    switch (ch)

    {

        case 1:

        printf("Enter the value of side\n");

        scanf("%f",&side);

        printf("the area of the square= %f*%f=%f cm",side,side,side*side);

        break;

        case 2:

        printf("\nEnter the value of length\n");

        scanf("%f",&length);

        printf("\nEnter the value of breadth\n");

        scanf("%f",&breadth);

        printf("the area of the rectangle= %f*%f=%f cm",length,breadth,length*breadth);

        break;

        case 3:

        printf("\nEnter the value of radius");

        scanf("%f",&radius);

        printf("the area of the circle= %f*%f*pi=%f cm",radius,radius,radius*radius*pi);

        break;

        default:printf("INVALID CHOICE");

        break;

    }

        printf("\n\nDO YOU WANT TO CONTINUE:\nThen press y else n:");

        fflush(stdin);

 scanf("%c",&t);

   }

        while(t=='y'||t=='Y');

        getch();

}

RESULT

The menu driven program for finding the area of a square , rectangle , and a circle was written , executed and the output  verified successfully.

OUTPUT