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#include <iostream>
#include <string>
using namespace std;
 
int main()
{
        string tr1 = "   *   \n";
        string tr2 = "  ***  \n";
        string tr3 = " ***** \n";
        string tr4 = "*******\n";
        string megatr = tr1 + tr2 + tr3 + tr4;
        cout << "####Lab 2, Exercise 15####\n\n";
        cout << "Let there be a triangle!!!\n\n";
        cout << megatr;
        cin.get();
 
}