C++:
#include<stdio.h> #include<iostream> #include<math.h> using namespace std; int main() { int n; while (cin >> n) { for (int j = 0; j<n; j++) { for (int k = 0; k<j; k++)cout << " "; for (int i = 1; i <= 2 * (n - j) - 1; i++) cout << "#"; cout << endl; } } return 0; }