C Program: Make a Calculator that Calculates Area of different Figures by using switch Statement

Program:

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

void main()

{

int fig_code;

float radius ;                                            /* For Circle */

float length , breadth ;                              /* For Rectangle */

float base , height ;                                   /* For Triangle */

float side ;                                               /* For Square */

float base1 , height1 ;                               /* For parallelogram */

float base2 , base3 , height2 ;                    /* For Trapezoid */

                                            

printf("................../n");

printf("1 Circle\n");

printf("2 Rectangle\n");

printf("3 Triangle\n");

printf("4 Square\n");

printf("5 Parallelogram\n");

printf("6 Trapezoid\n");

printf(" Enter the Figure code\n");

scanf("%d" , &fig_code\n");

switch(fig_code)

{

 

case1:                                                                                  

printf("Enter the Radius\n");

scanf("%f" , &radius);

Area= 3.142*radius*radius;

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

break;

                                                                                            

case 2:
printf("Enter the breadth and length\n");                           

scanf("%f%f" ,&breadth, &length);

Area= breadth*length;

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

break;

case 3:                                                              
printf("Enter the base and height\n");                     

scanf("%f%f" , &base , &height);                                  

area= 0.5*base*height;                                                           

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

break;

case 4:
printf("Enter the Side\n");

scanf("%f" , &side);                                                         

area= side*side;

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

break;
                                                                               

case 5:
printf("Enter the base1 and height1\n");                           

scanf("%f%f" , &base1 , &height1 );            

Area= base1 * height1;

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

break;

case 6:
printf("Enter the base2 , base3 and height2\n");                           
scanf("%f%f" , &base1 , &base2 , &height1 );                         

Area=0.5*( base1 + base2 ) * height2;

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

break;

default:

printf("Error in the figure code\n");

break;

}                                             /* End of switch */
}                                             /* End of main() */

Output:

....................

1 Circle

2 Rectangle

3 Triangle

4 Square
5 Parallelogram
6 Trapezoid

....................

Enter the Figure Code

4

Enter the side
2

Area of a square = 4

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