Drawing triangles

I know how to draw a square or a rectangle, but what's the code to draw a triangle? Does anyone have any idea.

Lin

what language, graphics library, OS, compiler?

C++

Something that would look like this

*
***
*****
******

with two variables, base and height...

thanks, Lin

I mean like this...

Code:

    *
  ***
 ****
*****

Sorry

Lin

That's not it either...

I'm looking for something with the top in the middle of the base and the two sides angling down.

Lin

possibly something like this

Code:

for (int numrows=1; numrows<height; numrows++)
{
 for (int c=1; c<=base; c++)
 {
  if (c < ((base/2)-(c-1)) || c > ((base/2)+(c-1))
  {
   cout << " ";
  }
  else 
  {
   cout << "*";
  }
 }
}

let me guess your using a book by lawrenceville press

Code:

#include <iostream.h> 

//------------------------------------------------------------------------------ 
void Spaces(int spaces) 
/* Set leading spaces before the '*' */ 
{ 
	for(int count=0; count<=spaces; count++) 
	{
		cout<<" "; 
	}
} 
//------------------------------------------------------------------------------ 
void DrawBar(int sizeofrow,int spaces) 
/* Display a bar of '*' of a set increasing lenght */ 
{ 
	Spaces(spaces); 
	for(int count=0; count<sizeofrow; count++) 
	{
		cout<<"*"; 
	}
	cout<<endl;
} 
//------------------------------------------------------------------------------ 
void Isotriangle(int columns) 
/* Build the triangle and set size of bars */ 
{ 
	int count=0; 
	int sizeofrow=1;
	int stospaces;
	
	stospaces=columns;

	while(count!=columns) 
	{	 
		count++; 
		
		if (count>1) 
		{ 
			sizeofrow=sizeofrow+2; 
		} 
		DrawBar(sizeofrow, stospaces); 
		stospaces--;
	} 
} 
//------------------------------------------------------------------------------ 
int main() 

{ 
	int columns; 

	cout<<"Enter the number of rows you want for your triangle: "; 
	cin>>columns; 

	Isotriangle(columns); 
	cout<<endl; 

return (0); 
}