create rectangle using single for loop

[spittips101]

I am trying to create a rectangle using only one for loop but I am not sure how to go about this. The user is to enter a width and height and the output is a rectangle but in my code I can only use ONE for loop. How can this be done?

[Athar]

Keep a counter with the current line length and insert a newline when appropriate.
Either that or use the modulo operator to check when you need to change lines.

[spittips101]

Thank you for your response. If I keep a counter with the line length, how do I know when to insert a newline without a nested for loop. Sorry, I am new at this and I just can't figure this out at all.

[Athar]

Every time the counter reaches "width"...

[spittips101]

ok I am pretty sure I got it!

#include <iostream>
using namespace std;

int main()
{
int w, h, x, y;


cout<<"Enter width: ";
cin>>w;
cout<<"Enter height: ";
cin>>h;

x=w*h;
y=0;
while(y<x)
{
for(int i=1; i<=w; i++)
{
cout<<"*";
}
y=y+w;
cout<<endl;
}
return 0;
}

[Athar]

I doubt that will count. You're still using two nested loops, even if one of them is not a for loop.

[spittips101]

My assignment says I can use only one FOR loop and nothing about while loops. It also says as a hint to multiply the height and width to get total number of characters in the rectangle. I figure since I am so new and this is a beginner class that I should get credit for this way. But just in case, how would you write the output?

[Athar]

Should be getting credit and getting credit are sometimes two different things.
Using modulo it could look somewhat like this:

for (int i=0;i<w*h;i++)
{
  cout << '*';
  if (i%w==w-1)cout << endl;
}