#include <stdio.h>
#include <conio.h>
#include <stdlib.h>
#include <ctype.h>

void main()
{
 int i,j=0,l=0,p[50],pos,n;
 char str[50],substr[50],dir[6],dir1[4]="left",k;
 clrscr();
 printf("nnEnter a string:");
 scanf("%s",str);
 printf("nEnter position, no. of character direction of sub string:");
 scanf("%d%d%s",&pos,&n,dir);
 for(i=0;str[i]!='';i++)
  l++;
 for(i=0;dir[i]!='';i++)
 {
  if(toupper(dir[i])==toupper(dir1[i]))
   k='l';
  else
  {
   k='r';
   break;
  }
 }

 if(toupper(k)=='L')
 {
  if(pos==0||(pos-n)<0)
  {
   textcolor(RED);
   cprintf("nnSub string not possible");
   cprintf("nPress any key to exit .....n");
   getch();
   exit(0);
  }
  for(i=pos-1;i>pos-n-1;i--)
  {
   substr[j]=str[i];
   j++;
  }
  substr[j]='';
  printf("nnnSubstring of %d chars from position %d towards letf in %s is ",n,pos,str);
  textcolor(CYAN);
  cprintf("%s.",substr);
 }
 else if(toupper(k)=='R')
 {
  if(pos>l||(pos+n-1)>l)
  {
   textcolor(RED);
   cprintf("nnSub string not possible");
   cprintf("nPress any key to exit .....n");
   getch();
   exit(0);
  }
  for(i=pos-1;i<pos+n-1;i++)
  {
   substr[j]=str[i];
   j++;
  }
  substr[j]='';
  printf("nnnSubstring of %d chars from position %d towards right in %s is ",n,pos,str);
  textcolor(CYAN);
  cprintf("%s",substr);
 }
 else
 {
  textcolor(RED);
  cprintf("nnSubstring not possible....");
  cprintf("nPress any key to exit....");
  getch();
  exit(0);
 }

 getch();
}