program for FIFO page replacement algorithm

#include<iostream.h>

#include<conio.h>

void main()

{

clrscr();

int n,flag=0,a[30],b[30],i,j,count=0,f,fault=0;

cout<<"\n**** FIFO page replacement algorithm ****\n";

cout<<"\n enter no. of pages ";

cin>>n;

cout<<" \n enter the reference string ";

for(i=0;i<n;i++)

cin>>b[i];

cout<<"enter frame :";

cin>>f;

for(i=0;i<n;i++)

{

for(j=0;j<f;j++)

{

if(a[j]==b[i])

{

flag=0;

break;

}

else

{

flag=1;

}

}

if(flag==1)

{

a[count]=b[i];

count++;

fault++;

 if(count==f)

  {

  count= 0;

  }

}

}

cout<<"total page faults are :"<<fault;

getch();

}