🚀 Programming Example
Question 7
Learn this program step-by-step with algorithm, source code, output and detailed explanation.
Using the switch statement, write a menu driven program to perform following operations:
(i) To Print the value of Z where Z = (x3 + 0.5x) / Y where x ranges from – 10 to 10 with an increment of 2 and Y remains constant at 5.5.
(ii) To print the Floyds triangle with N rows
Example: If N = 5, Output:
1
2 3
4 5 6
7 8 9 10
11 12 13 14
import java.util.Scanner;
public class RansariMenu
{
public static void main(String args[]) {
Scanner in = new Scanner(System.in);
System.out.println("Type 1 for Value of Z");
System.out.println("Type 2 for Floyd\'s triangle");
System.out.print("Enter your choice: ");
int choice = in.nextInt();
switch (choice) {
case 1:
double Z, Y = 5.5;
for (int x = -10; x <= 10; x+= 2) {
Z = (Math.pow(x, 3) + 0.5 * x) / Y;
System.out.println("Value of Z when x is "
+ x + " = " + Z);
}
break;
case 2:
System.out.print("Enter number of rows: ");
int N = in.nextInt();
int t = 1;
for (int i = 1; i <= N; i++) {
for (int j = 1; j <= i; j++) {
System.out.print(t + " ");
t++;
}
System.out.println();
}
break;
default:
System.out.println("Incorrect Choice");
break;
}
}
}
First understand the algorithm carefully. Then study the program line-by-line and compare it with the output. Finally, review the explanation section to strengthen your logic and programming understanding.
Rewrite the program without looking at the code. Modify values, conditions or logic and run it again. This helps improve confidence and strengthens coding skills much faster.