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  1. // Online C compiler to run C program online
  2. #include <stdio.h>
  3. #include <math.h>
  4. int main() {
  5.     float a,b,c,s,area;
  6.     int n;
  7.     printf("CHOOSE THE ACTION TO PERFORM.....\n");
  8.     printf("1.RECTANGLE\n");
  9.     printf("2.SQUARE\n");
  10.     printf("3.CIRCLE\n");
  11.     printf("4.TRIANGLE\n");
  12.     scanf("%d\n",&n);
  13.  
  14.     switch(n) {
  15.         case 1: printf("Enter L&B of Rectangle...\n");
  16.                 scanf("%d%d",&a,&b);
  17.                 area = a*b;
  18.                 printf("Area=%f",area);
  19.                 break;
  20.  
  21.         case 2: printf("Enter side of Square...\n");
  22.                 scanf("%f",&a);
  23.                 area = a*a;
  24.                 printf("Area=%f",area);
  25.                 break;
  26.  
  27.         case 3: printf("Enter Radius of Circle...\n");
  28.                 scanf("%f",&a);
  29.                 area = 3.14*a*a;
  30.                 printf("Area=%f",area);
  31.                 break;
  32.  
  33.         case 4: printf("Enter 3 sides of Triangle ...\n");
  34.                 scanf("%f%f%f",&a,&b,&c);
  35.                 s=(a+b+c)/2;
  36.                 area = sqrt(s*(s-a)*(s-b)*(s-c));
  37.                 printf("Area=%f",area);
  38.                 break;        
  39.     }
  40.  
  41.     return 0;
  42. }
Success #stdin #stdout 0s 5308KB
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stdout
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CHOOSE THE ACTION TO PERFORM.....
1.RECTANGLE
2.SQUARE
3.CIRCLE
4.TRIANGLE
https://ideone.com/La6Q0g
language:
C (gcc 8.3)
created:
21 days ago
visibility:
public

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