i think i'm familiar with it being hollow #include <iostream>
using namespace std; class Triangle { public: Triangle(int width, int height) : width(width), height(height / 2) { } void draw() { int start_offset = width / 2; int end_offset = 0; for (int row = 0; row < height; ++ row) { int bgratio = (end_offset - start_offset) * row / height + start_offset; lineOf(' ', bgratio - 1); cout << '*'; lineOf(' ', width - bgratio * 2); cout << ' *' << endl; } } private: int width, height; void lineOf(char ch, int count) { for(; count; -- count) cout << ch; } }; int main() { Triangle triangle(16,16); triangle.draw(); }