ICSE Class 10 Computer Applications
Question 33 of 69
Iterative Constructs in Java — Question 33
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Question Question 29
Write a program in Java to compute and display factorial of numbers up to a number entered via the Scanner class. The output should look like as shown below when 7 is input.
Enter a number: 7
1! (=1) = 1
2! (= 1 x 2) = 2
3! (= 1 x 2 x 3) = 6
4! (= 1 x 2 x 3 x 4) = 24
5! (= 1 x 2 x 3 x 4 x 5) = 120
6! (= 1 x 2 x 3 x 4 x 5 x 6) = 720
7! (= 1 x 2 x 3 x 4 x 5 x 6 x 7) = 5040
import java.util.Scanner;
public class KboatFactorial
{
public static void main(String args[]) {
Scanner in = new Scanner(System.in);
System.out.print("Enter a number: ");
int num = in.nextInt();
for (int i = 1; i <= num; i++) {
int f = 1;
System.out.print(i + "! ( = ");
for (int j = 1; j <= i; j++) {
if (j == 1)
System.out.print(j);
else
System.out.print(" x " + j);
f *= j;
}
System.out.print(" ) = " + f);
System.out.println();
}
}
}Output
