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# Why does x=x++ cause infinite loop?

Greenhorn
Posts: 12
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Why does x=x++ cause infinite loop?
public class Q46 {
public static void main(String[]args) {
int x;
int y;

for (x = 0, y = 5 ; x < y ; x=x++)
{
System.out.println( x + " " + y );
}
System.out.println( x + " " + y );
}
}

Greenhorn
Posts: 5
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hi,
try this :
int x = 0;
x = x++;
now value of x==0 ( and not 1 ! )
thats why the for loop doesnt stop.

Ranch Hand
Posts: 2378
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Hi Jeremy,
in x=x++ u r trying to assign a value x to the variable x and the increment operator is postfix. If u use prefix the loop i.e x= ++x will execute exactly 5 times plus the last time out of ur loop!

------------------
azaman

Ranch Hand
Posts: 158
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Hi,
See my detail explanation on i=i++; here,

http://www.javaranch.com/ubb/Forum24/HTML/011163.html
Regards,
Hassan.

 Don't get me started about those stupid light bulbs.