Print the number series 1 -2 3 -4 5 using while loop in Java
while Loop - Question 5
In this question, we will see how to print the number series 1 -2 3 -4 5 -6... up to nth term in Java programming using while loop. To know more about while loop click on the while loop lesson.
Q5) Write a program in Java to print the number series given below using while loop.
1 -2 3 -4 5 -6... up to nth term
Program
import java.util.Scanner;
public class Q5
{
public static void main(String args[])
{
int i=1,s=1,n;
Scanner sc=new Scanner(System.in);
System.out.print("Enter nth term ");
n=sc.nextInt();
while(i<=n)
{
System.out.print(i*s + " ");
s=s*-1; // changing the sign
i=i+1;
}
}
}Output
Enter nth term 10 1 -2 3 -4 5 -6 7 -8 9 -10
