Inverted Triangle Pattern in c++

In this article I would like to share with you a sample program that I wrote using C++ as my programming language that will display an inverted triangle pattern image. For this code I'm using two for loop statement to achieve the pattern design of the inverted triangle.

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 Program Listing

#include <iostream>
#include <stdlib.h>

using namespace std;

   int a=0, b=0, c=0;
  
void display()
{

   cout << "\t INVERTED TRIANGLE";
   cout << "\n\n";
    for(a=20;a>=1;a-=1)
    {
        for(b=20;b>a;b-=1)
        {
                cout << " ";
        }
        for(c=1;c<(a*2);c+=1)
        {
                cout << "^";
        }
        cout << "\n";
    }
        cout << "\n\n";
}

int main()
{
    display(); 
    system("pause");
  }