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Sequential File Allocation

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Write a C Program to implement Sequential File Allocation method #include < stdio.h> #include<conio.h> void main() { int f[50], i, st, len, j, c, k, count = 0; clrscr(); for(i=0;i<50;i++) f[i]=0; printf("Files Allocated are : \n"); x: count=0; printf(“Enter starting block and length of files: ”); scanf("%d%d", &st,&len); for(k=st;k<(st+len);k++)  if(f[k]==0)  count++; if(len==count) {  for(j=st;j<(st+len);j++)  if(f[j]==0)  {  f[j]=1;  printf("%d\t%d\n",j,f[j]);  }  if(j!=(st+len-1))  printf(” The file is allocated to disk\n"); } else printf(” The file is not allocated \n"); printf("Do you want to enter more file(Yes - 1/No - 0)"); scanf("%d", &c); if(c==1)  goto x; else  exit(); getch(); } Output:
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Indexed File Allocation method

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Write a C Program to implement Indexed File Allocation method #include<stdio.h> #include<conio.h> #include<stdlib.h> void main() { int f[50], index[50],i, n, st, len, j, c, k, ind,count=0; clrscr(); for(i=0;i<50;i++) f[i]=0; x:printf("Enter the index block: "); scanf("%d",&ind); if(f[ind]!=1) {  printf("Enter no of blocks needed and no of files for the index %d on the disk : \n", ind);  scanf("%d",&n); } else {  printf("%d index is already allocated \n",ind);  goto x; } y: count=0; for(i=0;i<n;i++) {  scanf("%d", &index[i]);  if(f[index[i]]==0)  count++; } if(count==n) {  for(j=0;j<n;j++)  f[index[j]]=1;  printf("Allocated\n");  printf("File Indexed\n");  for(k=0;k<n;k++)  printf("%d-------->%d : %d\n",ind,index[k],f[index[k]]); } else { printf("File in the index is already allocated \n"); printf(...
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Linked File Allocation

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Write a C Program to implement Linked File Allocation method. #include<stdio.h> #include<conio.h> #include<stdlib.h> void main() { int f[50], p,i, st, len, j, c, k, a; clrscr(); for(i=0;i<50;i++) f[i]=0; printf("Enter how many blocks already allocated: "); scanf("%d",&p); printf("Enter blocks already allocated: "); for(i=0;i<p;i++) {  scanf("%d",&a);  f[a]=1; } x: printf("Enter index starting block and length: "); scanf("%d%d", &st,&len); k=len; if(f[st]==0) {  for(j=st;j<(st+k);j++)  {  if(f[j]==0)  {  f[j]=1;  printf("%d-------->%d\n",j,f[j]);  }  else  {  printf("%d Block is already allocated \n",j);  k++;  }  } } else printf("%d starting block is already allocated \n",st); printf("Do you want to enter more file(Yes - 1/No - 0)"); scanf("%d", &c); if(c==1)  goto x; else  exit(0); ...
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