Method pointer while loop

Programming Questions

Zeim

in Programming Questions • 1 month ago

I've been trying to figure out how to do a second line from the bottom left to the top right in this code that intersects the one in my while loop.

int i = 0;

while (i < 1000){

i = i+1;

if (i < width){

if (i < height){

point (i,i);

}

Replies(3)

paulr451

Re: Method pointer while loop

1 month ago

Hi Zeim, Firstly, you should increment i after plotting the point, drawing starts at 0, not 1. Here is how to draw the other line:

int i = 0;

while (i < 1000){
if (i < width){
    if (i < height){
      point (i,i);
      point (i,height - i);
    }
}
i = i+1;
}

GoToLoop

I do not think his example was meant to be taken literally, but rather was a generalization for larger task.
Zeim, if you are indeed only trying to plot lines (an X on your window in this case) then do not use the point function as it is very inefficient. Use line instead, like this:

line(0, 0, width, height);
line(width, 0, 0, height);

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