Question

Test a program in java

a. Get user input to find the sum of 1st 5 even numbers using for loop

b. Get the factorial of the sum and show the result

Answer 1

public class df {

public static long factorial(int n) {

long fact = 1;

for (int i=1; i<=n; i++) {

fact *= i;

}

return fact;

}

public static void main(String[] args) {

int sum = 0;

for (int i=0; i<=8; i += 2) {

sum += i;

}

System.out.println("Sum of first 5 even numbers = " + sum);

System.out.println("Factorial of sum = " + factorial(sum));

}

}