使用switch case語句編寫的C程序，用於計算幾何圖形的面積

問題

使用switch case語句找出矩形、正方形、三角形、圓的面積 User need to enter base, height, side, radius, breadth and length at runtime to calculate the areas of all geometrical figures.

Solution

The solution to find the areas of tan

#Solution

The solution to find the areas of tan#Solution

The solution to find the areas of tangle, square, triangle, circle by using the switch case statement is explained below −

##Formulae
• The formulae for finding the areas of the respective geometrical figures are as follows −# geometrical figures are as follows −
• #Area of​​ rectangle = breadth *length;
• Area of​​ square = side * side;
• #Area of​​ circle = 3.142*radius*radius;

Area of​​

triangle

= 0.5 *base*height;

#Example

# Following is the C program to

find the areas of rectangle, square, triangle, circle by using the switch case statement

−

 Live Demo

#include <stdio.h>
void main(){
   int fig_code;
   float side, base, length, breadth, height, area, radius;
   printf("-------------------------</p><p>");
   printf(" 1 --> Circle</p><p>");
   printf(" 2 --> Rectangle</p><p>");
   printf(" 3 --> Triangle</p><p>");
   printf(" 4 --> Square</p><p>");
   printf("-------------------------</p><p>");
   printf("Enter the Figure code</p><p>");
   scanf("%d", &fig_code);
   switch(fig_code){
      case 1:
         printf(" Enter the radius</p><p>");
         scanf("%f",&radius);
         area=3.142*radius*radius;
         printf("Area of a circle=%f</p><p>", area);
         break;
      case 2:
         printf(" Enter the breadth and length</p><p>");
         scanf("%f %f",&breadth, &length);
         area=breadth *length;
         printf("Area of a Rectangle=%f</p><p>", area);
         break;
      case 3:
         printf(" Enter the base and height</p><p>");
         scanf("%f %f", &base, &height);
         area=0.5 *base*height;
         printf("Area of a Triangle=%f</p><p>", area);
         break;
      case 4:
         printf(" Enter the side</p><p>");
         scanf("%f", &side);
         area=side * side;
         printf("Area of a Square=%f</p><p>", area);
         break;
      default:
      printf(" Error in figure code</p><p>");
      break;
   }
}

#################################C ##當上述程式被執行時，它產生以下結果−###

Run 1:
-------------------------
1 --> Circle
2 --> Rectangle
3 --> Triangle
4 --> Square
-------------------------
Enter the Figure code
3
Enter the base and height
4
7

Area of a Triangle=14.000000

Run 2:
-------------------------
1 --> Circle
2 --> Rectangle
3 --> Triangle
4 --> Square
-------------------------
Enter the Figure code
1
Enter the radius
8
Area of a circle=201.087997

####

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