Memory_Management_Paging.c

#include<stdio.h>
int main(){
    int ms, ps, nop, np, rempages, i, j, x, y, pa, offset;
    int s[10], fno[10][20];
    clrscr();
    printf("\nEnter the memory size -- ");
    scanf("%d",&ms);

    printf("\nEnter the page size -- ");
    scanf("%d", &ps);

    nop = ms/ps;
    printf("\nThe no. of pages available in memory are -- %d ", nop);
    printf("\nEnter number of processes -- ");
    scanf("%d", &np);
    
    rempages = nop;
    for(i = 1; i <= np; i++){
        printf("\nEnter no. of pages required for p[%d]-- ", i);
        scanf("%d", &s[i]);
        if(s[i] > rempages){
            printf("\nMemory is Full");
            break;
            
        }
        rempages = rempages - s[i];
        printf("\nEnter pagetable for p[%d] --- ", i);
        for(j = 0; j < s[i]; j++)
            scanf("%d", &fno[i][j]);
        
    }
    
    printf("\nEnter Logical Address to find Physical Address ");
    printf("\nEnter process no. and pagenumber and offset -- ");
    scanf("%d %d %d", &x, &y, &offset);
    if(x > np || y >= s[i] || offset >= ps)
        printf("\nInvalid Process or Page Number or offset");
    else{ 
        pa = fno[x][y] * ps + offset;
        printf("\nThe Physical Address is -- %d", pa);
        
    }
    getch();
}