Program in C to show first ii firt out page replacement algorithm

#include<stdio.h>

#include<conio.h>

int i,j,nof,nor,flag=0,ref[50],frm[50],pf=0,victim=-1;

void main()

{           

 clrscr();

 printf("\n \t\t\t FIFI PAGE REPLACEMENT ALGORITHM");

 printf("\n Enter no.of frames....");

 scanf("%d",&nof);

 printf("Enter number of reference string..\n");

 scanf("%d",&nor);

 printf("\n Enter the reference string..");

 for(i=0;i<nor;i++)

 scanf("%d",&ref[i]);

 printf("\nThe given reference string:");

 for(i=0;i<nor;i++)

 printf("%4d",ref[i]);

 for(i=1;i<=nof;i++)

 frm[i]=-1;

 printf("\n");

 for(i=0;i<nor;i++)

 {

   flag=0;

   printf("\n\t Reference np%d->\t",ref[i]);

   for(j=0;j<nof;j++)

   {

     if(frm[j]==ref[i])

     {

       flag=1;

       break;

     }}

      if(flag==0)

   {

     pf++;

     victim++;

     victim=victim%nof;

     frm[victim]=ref[i];

     for(j=0;j<nof;j++)

     printf("%4d",frm[j]);

   }

 }

 printf("\n\n\t\t No.of pages faults...%d",pf);

 getch();

}

OUTPUT