Pyramid Shape dengan Perulangan

//program : piramid.cpp
#include<iostream>
#include<iomanip>
#include<conio.h>
using namespace std;

int main()
{
    char letter;
    int width;
    int base;
    int a;
    int b = 1;
    int counter = 0;
   
    cout<<"Karakter yang anda masukan akan berubah menjadi piramid"<<endl;
    cout<<"sejumlah banyaknya bilangan yang dimasukan."<<endl;
   
    while(cin)
    {
              cout<<"\nMasukan simbol: "<<endl;
              cin>>letter;
              cout<<"masukan bilangan: "<<endl;
              cin>>base;
             
              width = (base/2) + 5 - counter;
              a = 1;
             
              while(width > 5)
              {
                        width = (base/2) + 5 - counter;
                        cout<<setw(width)
                       ;
                      
                       while(b > 0)
                       {
                               cout<<letter;
                               b--;
                       }
                      
                       cout<<endl;
                       b = (a * 2) - 1;
                       width--;
                       b = b + 2;
                       a++;
                       counter++;
              }
             
              b = 1;        
              counter = 0;
}
    cout<<endl;
    getch();
}