Page 220 - ComputerScience_Class_11

13 System.out.println("Enter your choice : ");
14 ch=sc.next().charAt(0);

15 switch(ch)
16 {
17 case 'r' :
18 case 'R' : System.out.println("Enter length and breadth");
19 l=sc.nextInt();
20 b=sc.nextInt();
21 arec=l*b;
22 System.out.println(" Area of a rectangle : "+(arec));

23 break;
24 case 'i' :
25 case 'I' : System.out.println("Enter base and height");
26 s1=sc.nextInt();
27 s2=sc.nextInt();
28 aiso=s1*s2/2;

System.out.println("Area of an isosceles triangle :"+
29 (aiso));
30 break;
31 case 'c' :
32 case 'C' : System.out.println("Enter radius");
33 r=sc.nextDouble();
34 acir=3.142 * r * r;
35 System.out.println(" Area of a circle : "+(acir));
36 break;

37 default: System.out.println("You have entered the wrong choice");
38 }
39 }
40 }

The output of the preceding program is as follows:

BlueJ: Terminal Window - Java

Options

Choice r: Area of a rectangle
Choice i: Area of an isosceles triangle
Choice c: Area of a circle
Enter your choice :
i
Enter base and height
4
3
Area of an isosceles triangle : 6.0

218 Touchpad Computer Science (Ver. 3.0)-XI