Another While loop

[Cade Foster]

This one has been driving my n00b brain nuts for weeks now, any help greatly appreciated:

I want a 5 column/12 Row output of UNICODE characters starting from 65 going up to 124 - my code:

 
//the "col" variable represents the columns, "uni" is the unicode Character
 
char uni = 'A';
int col = 0;
while (col <5){
System.out.print(uni + " ");
col++;
uni++;

     while (uni <=65 && uni <123)
{
System.out.println();
col = 0;
uni++;
}    

What I've got so far from the output is the first 5 letters A B C D E, then I need it to repeat through the first while loop again.

[Brian Cole]

Originally posted by John Dupre:
while (uni <=65 && uni <123)

What's the point if checking if uni < 123 if you already know that uni <= 65 ?

[fred rosenberger]

actually, your second loop never even executes. you start by setting uni to 'A', which is 65. col is less than 5, so you increment both, specifically making uni 66.

you then hit "while uni <= 65..." this is false, so this check stops, and you never enter this loop. if you take out that loop in its entirety, you code still runs exactly the same.

what i think you want to do is wrap this:

while (col <5){
   System.out.print(uni + " ");
   col++;
   uni++;

in a while loop, as long as uni is less than 124. You'll also need to reset col each time you exit the inner loop.

something like

while uni < 124 {
  while col < 5 {
     System.out.print(uni + " ");
     col++;
     uni++;
   }
  col = 0;
}     
  
 

[Cade Foster]

My bad on the operand(should be >=65), thankfully I got it sorted myself I got advice from another forum that was total crap, you guys where spot on though

 char uni = 'A';
int col = 0;
int row = 0;
while (uni >=65 && uni <125)
{
System.out.print(uni + " ");
col++;
uni++;

while (row <12 && col ==5)
{
System.out.println();
col = 0;
row++;

}   

[Brian Cole]

Originally posted by Cade Foster:

char uni = 'A';
int col = 0;
int row = 0;
while (uni >=65 && uni <125)
{
System.out.print(uni + " ");
col++;
uni++;

while (row <12 && col ==5)
{
System.out.println();
col = 0;
row++;

}   

btw, this code would work just as well if you completely removed the row variable. You aren't really using it for anything.