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#include<stdio.h> int main()
{
int total_frames, total_pages, hit = 0;
int pages[25], frame[10], arr[25], time[25]; int m, n, page, flag, k, minimum_time, temp; printf("Enter Total Number of Pages:\t"); scanf("%d", &total_pages);
printf("Enter Total Number of Frames:\t"); scanf("%d", &total_frames);
for(m = 0; m < total_frames; m++)
{
frame[m] = -1;
}
for(m = 0; m < 25; m++)
{
arr[m] = 0;
}
printf("Enter Values of Reference String\n"); for(m = 0; m < total_pages; m++)
{
printf("Enter Value No.[%d]:\t", m + 1); scanf("%d", &pages[m]);
}
printf("\n");
for(m = 0; m < total_pages; m++)
{
arr[pages[m]]++; time[pages[m]] = m; flag = 1;
k = frame[0];
for(n = 0; n < total_frames; n++)
{
if(frame[n] == -1 || frame[n] == pages[m])
{
if(frame[n] != -1)
{
hit++;
}
flag = 0;
frame[n] = pages[m]; break;
}
if(arr[k] > arr[frame[n]])
{
k = frame[n];
}
}
if(flag)
{
minimum_time = 25;
for(n = 0; n < total_frames; n++)
{
if(arr[frame[n]] == arr[k] && time[frame[n]] < minimum_time)
{
temp = n;
minimum_time = time[frame[n]];
}
}
arr[frame[temp]] = 0; frame[temp] = pages[m];
}
for(n = 0; n < total_frames; n++)
{
printf("%d\t", frame[n]);
}
printf("\n");
}
printf("Page Hit:\t%d\n", hit);
return 0;

}