Answer to Question #94608 in C++ for b

Question

I need to function to draw an equilateral triangle in C++. with # as the border and '*' as the filler after accepting the size from the user.

Answer 1

#include <iostream>

using namespace std;

int main()

{

  int height;

  cout << "Enter height: ";

  cin >> height;

  // length of the line to be filled with '*'

  int z=1;

  // Display all lines except the bottom one

  for (int i=0; i<height-1; i++) {

    // spaces before the border

    for (int j=height-1; j>i; j--)

      cout << " ";

    // ... and border itself

    cout << "#";

    // On the first row (i==0), there is no filling

    if(i!=0) {

      //

      for (int k=1; k<=z; k++)

        cout << "*";

      cout << "#";

      z += 2;

    }

    cout << endl;

  }

  // The bottom line consists of '#' only

  for (int i=0; i<=z+1; i++)

    cout << "#";

  cout << endl;

  return 0;

}