Paging

#include <stdio.h>

int main(){

    int ms,ps,nop,np,x,y,offset,rempages,i,j,pa;
    int s[10], ft[10][20];
    printf("\nEnter the size of memory : ");
    scanf("%d",&ms);
    printf("Enter the size of a page : ");
    scanf("%d",&ps);
    nop = ms/ps;
    printf("No of pages available : %d",nop);
    rempages = nop;
    printf("\nEnter no. of processes : ");
    scanf("%d",&np);
    for(i=0;i<np;i++){
        printf("Enter no. of pages required for p[%d] : ",i);
        scanf("%d",&s[i]);
        if(s[i]>rempages){
            printf("Memory is FULL\n");
            break;
        }
        rempages = rempages - s[i];
        printf("Enter the page table for p[%d] : ",i);
        for(j=0; j<s[i]; j++){
            scanf("%d",&ft[i][j]);
        }
    }
    printf("Enter the Logical address to find physical address\n");
    printf("Enter the process no. page no. and offset : ");
    scanf("%d %d %d",&x,&y,&offset);
    if(x>np||y>=s[i]||offset>=ps){
        printf("\nInvalid process no. or page no. or offset");
    }else{
        pa = ft[x][y]*ps + offset;
        printf("The Physical Address is : %d", pa);
    }
}