Looping iseng dengan For While

dri pada ane depes dan gak ngapa2in mending iseng2 ngoding c++ aja gan,,,,

Code:

#include <iostream>
#include <string>
#include <iomanip>
#include <windows.h>
using namespace std;
int main()
{
    system("color 0A");
    system("TITLE looping Mas bro");
    unsigned long int loop, time, a=0, x;
    char set = ' ';
    cout<<"Input Looping = ";
    cin>>loop;
    cout<<"Input Interval = ";
    cin>>time;
    cout<<"Input Setfill Variabel = ";
    cin>>set;
    //Kalkulasi'_'//
    while(loop=loop-1)
    {
                      int t=loop+1;;
                      for(int a=1; a<=loop; a=a+1)
                      {
                              int c=a;
                              c=c*2;
                              t=t-1;
                              cout<<setfill(' ')<<setw(t)<<" "<<setfill(set)<<setw(c)<<" "<<endl;
                              Sleep(time);
                           
                      }
                      x=loop;
                      for(int b=1; b<=loop; b=b+1)
                      {
                              x=x-1;
                              int z=b, v=x;
                              v=v*2;
                              z=z+1;
                              cout<<setfill(' ')<<setw(z)<<" "<<setfill(set)<<setw(v)<<" "<<endl;
                              Sleep(time);
                      }
    }
    ////////////////
    system ("pause>nul");
    return 0;
}

jadi gini gan..


sorry klo cuma gini doank om,,