/* Bit finder */
/*Program to find out whether a  bit in a
given no  is switched ON(1)  or OFF(0).
The search is only limited till the
seventh bit of the number*/
/*Author:Ariant A goswami
  EMAIL: apache_elvis@yahoo.com
  Suggestion or comments(good or bad) are welcomed.
*/


#include<iostream.h>
#include<conio.h>
#include<math.h>
/*functions are declared as void */
void firstbit_info(int no);// to get information about the first bit of the given number
void secondbit_info(int no);// to get information about the second bit of the given number
void thirdbit_info(int no);// to get information about the third bit of the given number
void fourthbit_info(int no);// to get information about the fourth bit of the given number
void fifthbit_info(int no);// to get information about the fifth bit of the given number
void sixthbit_info(int no);// to get information about the sixth bit of the given number
void seventhbit_info(int no);// to get information about the seventh bit of the given number

/*main function*/
void main(){
	   int num,choice;
	   clrscr();
	   cout<<"[Bit Finder]\n";
	   cout<<"Enter a number:";
	   cin>>num;
	   cout<<"which bit do you want to know about(1,2,..7):";
	   cin>>choice;
	   /*depending on the users choice the value of num is passed on to the respective            function*/
           switch (choice){
	   case 1: firstbit_info(num);
		   break;
	   case 2:secondbit_info(num);
		  break;
	   case 3:thirdbit_info( num);
		 break;
	   case 4:fourthbit_info(num);
		  break;
	   case 5:fifthbit_info(num);
		  break;
	   case 6:sixthbit_info(num);
		  break;
	   case 7:seventhbit_info(num);
	  }

      getch();
     }

/* function to get info about the first bit*/  
void firstbit_info(int no){
				int bf;
				bf=pow(2,1);
				no=no&bf;/*BitWISE AND OPERATOR IS USED TO FIND WHETHER BIT IS ON                                          OR OFF*/
				no==0?cout<<"bit is off(0)":cout<<"bit is on(1)";
				}


/*the rest of the fuctions work in the same way except the value of bf increases
with respect to the bit number */  

void  secondbit_info(int no){
				int bf;
				bf=pow(2,2);//value of bf increases 2*2=4
				no=no&bf;
				no==0?cout<<"bit is off(0)":cout<<"bit is on(1)";
				}

  void thirdbit_info(int no){
				int bf;
				bf=pow(2,3);//value of bf increases 2*2*2=8
				no=no&bf;
				no==0?cout<<"bit is off(0)":cout<<"bit is on(1)";
				}
  void fourthbit_info(int no){
				int bf;
				bf=pow(2,4);//value of bf increases 2*2*2*2=16 and so on...
				no=no&bf;
				no==0?cout<<"bit is off(0)":cout<<"bit is on(1)";
				}
   void fifthbit_info(int no){
				int bf;
				bf=pow(2,5);
				no=no&bf;
				no==0?cout<<"bit is off(0)":cout<<"bit is on(1)";
				}
   void sixthbit_info(int no){
				int bf;
				bf=pow(2,6);
				no=no&bf;
				no==0?cout<<"bit is off(0)":cout<<"bit is on(1)";
				}
   void seventhbit_info(int no){
				int bf;
				bf=pow(2,7);
				no=no&bf;
				no==0?cout<<"bit is off(0)":cout<<"bit is on(1)";
				}