Thread: Do while loop help

Well basically what I'm trying to do is write a program that will prompt the user to enter an integer, then take that number and Square it as well as print it out and continue in this loop until 0 is entered. Here is what I have done and failed to try to do so far, thanks for the help guys.

#import java.util.Scanner;
public class twelve{
public static void main(String[] args){

Scanner in = new Scanner(System.in);
int i = in.nextInt;
do {
if (i == 0) System.out.print("0 cannot be used ");
else {
System.out.print(i * i + ",");
}

} while( i != 0);
System.out.print(i*i + ",");
}
}


Problems im really struggling with most is how to get the program to square the number and then at this point im not even sure if this will run back through the loop again. Thanks for the help guys 3rd week of programming ><

Another thing was I am not entirely sure on the formatting of Do while loops as well so any and all help appreciated to get me going on the right direction.

Originally Posted by rbonner19

Well basically what I'm trying to do is write a program that will prompt the user to enter an integer, then take that number and Square it as well as print it out and continue in this loop until 0 is entered. Here is what I have done and failed to try to do so far, thanks for the help guys.

#import java.util.Scanner;
public class twelve{
public static void main(String[] args){

Scanner in = new Scanner(System.in);
int i = in.nextInt;
do {
if (i == 0) System.out.print("0 cannot be used ");
else {
System.out.print(i * i + ",");
}

} while( i != 0);
System.out.print(i*i + ",");
}
}


Problems im really struggling with most is how to get the program to square the number and then at this point im not even sure if this will run back through the loop again. Thanks for the help guys 3rd week of programming ><

I am not sure if I understand your do-while loop correctly. The loop is "repeated" only if the the first read int i = in.nextInt; returned a value unequal 0.

Yea as long as 0 isnt the inputted answer/number then the loop should keep going.

import java.util.Scanner;
public class twelve{
public static void main(String[] args){
int data;

Scanner in = new Scanner(System.in);
do {
System.out.print(" Enter an integer value ( program exits if it is 0); ");
data = input.nextInt();
}
while (data != 0);
data *=data;
System.out.print(data + ",");
}
}

I'm continually working on it, this is where I'm at now and yea it all diff etc but its a working progress anythign seen will be greatly appreciated.

Your logic was correct but you have made an error in your program.
The statement,i = in.nextInt();should be inside the do-while loop.

import java.util.Scanner;
 
public class twelve{
public static void main(String[] args){
 
Scanner in = new Scanner(System.in);
int i;
do {
		i = in.nextInt();
		if (i == 0)
		{
 
			System.out.print("0 cannot be used ");
		}
		else {
				System.out.print(i * i + ",");
			 }
 
} while( i != 0);
System.out.print(i*i + ",");
}
}