How would I use a while loop to keep requesting user input
53,743
Solution 1
Use a while loop above input line as:
while(true)
And, use if
condition to break
.
if(year == 0)
break;
Also, condition for leap year
is wrong in your code. It should be:
if((year % 100 == 0 && year % 400 == 0) || (year % 4 == 0 && year % 100 != 0))
//its a leap year
else
//its not
PS: As in comments, I'll give a complete code:
import java.util.*;
public class Task10 {
public static void main(String[] args) {
System.out.println("Enter a year to check if it is a leap year");
while(true){
Scanner input = new Scanner(System.in);
int year = input.nextInt();
if(year == 0)
break;
if((year % 100 == 0 && year % 400 == 0) || (year % 4 == 0 && year % 100 != 0))
System.out.println(year + " is a leap year");
else
System.out.println(year + " is not a leap year");
}
}
}
Solution 2
You need to do something to keep you input loop running until a stopping condition is encountered (which in your case is that when the user inputs 0
)
// First get the scanner object with the input stream
Scanner sc = new Scanner(System.in);
// Just using do-while here for no reason, you can use a simple while(true) as well
do{
int input = sc.nextInt(); // read the next input
if (int == 0) { // check if we need to exit out
// break only if 0 is entered, this means we don't want to run the loop anymore
break;
} else {
// otherwise, do something with the input
}
} while(true); // and keep repeating
Author by
Imminence
Updated on November 05, 2020Comments
-
Imminence over 3 years
I've tried a couple of things with the while loop and can't seem to get it to work. I want to keep requesting user input until the user inputs the number 0, here is the code I have so far:
import java.util.*; public class Task10 { public static void main(String[] args) { System.out.println("Enter a year to check if it is a leap year"); Scanner input = new Scanner(System.in); int year = input.nextInt(); if ((year % 4 == 0) || ((year % 400 == 0) && (year % 100 != 0))) System.out.println(year + " is a leap year"); else System.out.println(year + " is not a leap year"); } }