Answer to Question #175880 in C++ for zain ul abdeen

Question

Create a class named as Bitkaar. Take a number 65535. Create functions to print in binary, decimal and hexadecimal. Print number in binary by using the algorithm discussed in the class. For Decimal and Hexadecimal build a logic by your own thinking.

Answer 1

#include <iostream>
#include <string>
#include <cmath>
using namespace std;


class Bitkaar{
private:
	int number;
	string hexStr;
	long long binaryNumber;
public:
	//Constructor
	Bitkaar(int number){
		this->number=number;
		this->hexStr="";
		this->binaryNumber=0;
	}
	//print in binary, decimal and hexadecimal
	void printInBinary(){
		int digits[10000];  
		int counter=0;
		int numberToBinary=this->number;
		for(counter=0; numberToBinary>0; counter++){    
			digits[counter]=numberToBinary%2;    
			numberToBinary/=2;  
		}
		int numbers[10000];
		int i=0;
		int size=counter;
		cout<<"Number in binary: ";
		for(counter=counter-1 ;counter>=0 ;counter--){    
			cout<<digits[counter];    
			numbers[i]=digits[counter];
			i++;
		} 


		for (int i = 0; i < size; i++) {
			this->binaryNumber *= 10;
			this->binaryNumber += numbers[i];
		}
		cout<<"\n";
	}
	//binary to decimal
	int binaryToDecimal(long long n)
	{
		int decNumber = 0;
		int i = 0;
		int rem;
		while (n!=0){
			rem = n%10;
			n /= 10;
			decNumber += rem*pow(2.0,i);
			++i;
		}
		return decNumber;
	}
	//hexadecimal to decimal
	int hexadecimalToDecimal(string hexStr){
		int decimalNum=0;
		int rem;
		int i=0;
		int length=0;
		length=hexStr.length()-1;
		i=hexStr.length();
		i=0;
		while(length>=0)
		{
			rem = hexStr[length];
			if(rem>=48 && rem<=57)
				rem = rem-48;
			else if(rem>=65 && rem<=70)
				rem = rem-55;
			else if(rem>=97 && rem<=102)
				rem = rem-87;
			
			decimalNum = decimalNum + (rem*pow(16.0, i));
			length--;
			i++;
		}
		return decimalNum;
	}
	//print in Decimal
	void printInDecimal(){
		//binary to decimal
		cout<<"Binary to decimal: "<<binaryToDecimal(this->binaryNumber)<<"\n";
		cout<<"Hexadecimal to decimal: "<<hexadecimalToDecimal(hexStr)<<"\n";
	}
	//print in Hexadecimal
	void printInHexadecimal(){
		char hex[16]={'0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F'};
		int numberToHex=this->number;
		while(numberToHex>0)
		{
			int r = numberToHex % 16;
			hexStr = hex[r] + hexStr;
			numberToHex/=16;
		}
		cout<<"Number in hexadecimal: "<<hexStr<<"\n";
	}
};


//The start point of the program
int main (){
	int number=-1;
	while(number<0){
		cout<<"Enter integer number: ";
		cin>>number;
	}
	
	Bitkaar bitkaar(number);
	bitkaar.printInBinary();
	bitkaar.printInHexadecimal();
	bitkaar.printInDecimal();
	system("pause");
	return 0;
}