Question

Question 5.
Using the switch statement, write a menu driven
program for the following:

(i) To print the Floyd's triangle (given below] :
1
2 3
4 5 6
7 8 9 10

(ii) To display the following pattern
I
IC
ICS
ICSE
​

Answer 1

Explanation:

import java.util.*;

class Choice

{

public static void main(String args[])

{

Scanner sc=new Scanner(System.in);

System.out.println("enter your choice\n1-Floyd's triangle\n2-pattern");

int n=sc.nextInt();

switch(n)

{

case 1:int a=1;

for(int i=1;i<=4;i++)

{

for(int j=1;j<=i;j++)

System.out.print(a++ +" ");

System.out.println();

}

break;

case 2:String s="ICSE";

for(int i=0;i<=4;i++)

{

System.out.println(s.substring(0,i));

}

break;

default:System.out.println("Invalid choice");

}

}

}