First Fit Memory Management

we can use first fit memory management scheme to allocate memory space to different processes.Here is the program in c++
#include<iostream.h>
#include<conio.h>
#include<stdio.h>
class FFMM
{ int a[50],c,par,i,j,n,p[50],d[50],e[50],r,s,b;
 public:   
        void input();
        void output();
}X;
void FFMM::input()
{
 c=1000;
 r=c;
 cout<<"Total memory Available = 1000";
 cout<<"\nEnter the number of partition that you want in memory\t";
 cin>>par;
 cout<<"\nEnter the size of remaining partitions";
 cout<<"\n\nRemaining Memory=\t1000";
 for(i=0;i<par;i++)
 {
   if(r!=0)
   {
    cout<<"\n Partition "<<i+1<<"\t";
    cin>>s;
    r=r-s;
    a[i]=s;
    cout<<"\n Remaining Memory=\t"<<r;
   }
 }
 cout<<"\n\nEnter the number of processes\t";
 cin>>n;
 cout<<"\nEnter the size of processes\n";
 for(i=0;i<n;i++)
 {
  cout<<"\nP["<<i+1<<"] =\t";
  cin>>p[i];
 }
}
void FFMM::output()
{
 for(i=0;i<n;i++)
 {
  for(j=0;j<n;j++)
  {
   if(p[i]<=a[j])
   {
    d[i]=j+1;
    a[j]=a[j]-p[i];
    break;
   }
  }
 }
 cout<<"\n\nThe Process allocation are as Follows\n";
 cout<<"\nProcess\tPartition";
 for(i=0;i<n;i++)
  cout<<"\n P["<<i+1<<"]\t "<<d[i];
}
  main()
{

 X.input();
 X.output();
 getch();
}