Thread: about printf please help having errors

Do you have a compiler? Because there are some errors that should come up.

First off, System.out.printf("\n%2d",list2[i] + " ");. You are sending the printf statement a string, not an int. You are doing this by saying: list2[i] + " ".

Second, why are you incrementing the loop based on the size of list, but using list2 inside your loop instead? That is a dangerous practice because those loops might not have the same length.

Third, if you are wanting to just make it all left-justified,

for (int i = 0 ; i<list.length ; i++)
		{
			list [i] =(int)(99*Math.random()+1);
			System.out.printf("\n%2d",list[i]);
		}

works.
If you are wanting leading zeros however, this:

for (int i = 0 ; i<list.length ; i++)
		{
			list [i] =(int)(99*Math.random()+1);
			System.out.printf("\n%02d",list[i]);
		}

works.


Based on your style, I can only assume you know C. If that is true, then all of these issues are Syntax Issues that are the exact same in C and you might want to review some of the basic programming syntax that is used in most languages.