Thread: Decimal to hex problem

Why do i not get a value 0 when my input is 0.

import java.util.Scanner; 
 
public class Dec2Hex {
	public static void main(String[] args){
		int dec; 
		String hexStr = ""; 
		int radix = 16;  
		char[] hexChar = {'0', '1', '2', '3', '4','5','6','7','8','9', 'A', 'B', 'C', 'D', 'E', 'F'};
 
		//Read input
		Scanner in = new Scanner(System.in); 
		System.out.print("Enter an interger: ");
		dec = in.nextInt(); 
 
		while(dec>0) {
			int hexDigit = dec % radix; 
			hexStr = hexChar[hexDigit] + hexStr;  
			dec = dec / radix; 
			}
 
		System.out.println("The hexadecimal equivalent is: "+hexStr);
	}
}

Can you post the contents of the console from when the program is executed showing what you are asking about?

Please edit your post and wrap your code with code tags:
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YOUR CODE HERE
[/code]
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Originally Posted by kennylty

Why do i not get a value 0 when my input is 0.

while(dec>0) {

See the condition
And it's not sufficient to change the condition (otherwise you'll go in "loop").

Originally Posted by kennylty

but if i change it to

while (dec>=0)

it does not return the println at all.

I told "And it's not sufficient to change the condition (otherwise you'll go in "loop")."

You don't need a while .... you need a do-while (with same condition as before).