hollow triangles

[ENyU7k9E]

i want to generate a hollow triangle but i am not getting any idea about that.

i am a new with programming.
plz give code with explanation b/c i hv not read all the topics yet.

[Bazzy]

How do you want that triangle to be drawn?
With stars? With a Graphic Library?

[buffbill]

Well how would you draw a primitive block A?
-------*
-----*--*
----****
---*-----*
--*-------*
Is this something like what you had in mind?

[ENyU7k9E]

i want triangle is to be drawn with stars by using only iostream.h

[ENyU7k9E]

buffbill it should be like this
---------*
---------**
---------*--*
---------*---*
---------*----*
---------*------*
---------*--------*
---------********
plz give me code for this program by using nested loops and iostream library only

[Bazzy]

plz give me code

Not many will give you code.
Post what you got so far and we will help you

[ENyU7k9E]

i am too confused about this program that how to write its code.

[Bazzy]

If you know that you need to use nested loops start from there

[btripp]

LOL i love these types of posts

give me code for this program by using nested loops and iostream library only

i am too confused about this program that how to write its code

welcome to programming....its not easy.

[buffbill]

In the absence of anything more useful google pascal`s triangle and observe how the blanks (' ')
are printed on the LHS of the triangle using setw() for the same purpose as our dashes (-). Similarly, spaces will be required inside the triangle.

[ENyU7k9E]

i have tried it by using setw();
but i am not getting the correct way to sort out this problem.
plz help me
i have to give exam on tuesday.

[Bazzy]

i am too confused about this program that how to write its code.

i have tried it by using setw();

Did you write something or not? Post what you have if you did

[ENyU7k9E]

#include <iostream>
using namespace std;
int main()
{
int z=0;
int i, j;
int spaces;
int g=10;

for (i=1; i<12; i++)
{
for (spaces=g; spaces>0; spaces--)
{
cout << " ";
}
for (j=1; j<z; j++)
{
cout << "*";
}
cout << endl;
z+=2;
g--;
}
return 0;
}

i have written this code but there is a logical error in it.

[Bazzy]

It's almost OK, you only need to fix a bit this loop:

for (j=1; j<z; j++)
{
    cout << "*"; // with this you will draw a filled triangle
}

Hint: you want to draw only the borders so when j gets its first and last values ( 1 and z-1 ) and when i gets its last value ( 12-1 = 11 ) to draw the base. When one of these conditions are met draw a star, otherwise draw a space

and please use [code][/code] tags http://www.cplusplus.com/articles/firedraco1/