└── paging


/paging:
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 1 | #include<stdio.h> 
 2 | #include<conio.h> 
 3 | main() 
 4 | { 
 5 | int ms, ps, nop, np, rempages, i, j, x, y, pa, offset; 
 6 | int s[10], fno[10][20]; 
 7 | clrscr(); 
 8 | printf("\nEnter the memory size -- "); 
 9 | scanf("%d",&ms); 
10 | printf("\nEnter the page size -- "); 
11 | scanf("%d",&ps); 
12 | nop = ms/ps; 
13 | printf("\nThe no. of pages available in memory are -- %d ",nop); printf("\nEnter 
14 | number of processes -- "); 
15 | scanf("%d",&np); 
16 | rempages = nop; 
17 | for(i=1;i<=np;i++) 
18 | { 
19 | printf("\nEnter no. of pages required for p[%d]-- ",i); 
20 | scanf("%d",&s[i]); 
21 | if(s[i] >rempages) 
22 | { 
23 | } 
24 | printf("\nMemory is Full"); break; 
25 | rempages = rempages  -  s[i]; printf("\nEnter 
26 | pagetable for p[%d] --- ",i); for(j=0;j<s[i];j++) 
27 | scanf("%d",&fno[i][j]); 
28 | } 
29 | printf("\nEnter Logical Address to find Physical Address "); 
30 | printf("\nEnter process no. and pagenumber and offset -- "); 
31 | scanf("%d %d %d",&x,&y, &offset); 
32 | if(x>np || y>=s[i] || offset>=ps) 
33 | printf("\nInvalid Process or Page Number or offset"); 
34 | else 
35 | { 
36 | } 
37 | pa=fno[x][y]*ps+offset; 
38 | printf("\nThe Physical Address is -- %d",pa); 
39 | getch(); 
40 | }
41 | 


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