Question

In C++ 11, create a program does the following 4 conversions:

From Binary to Decimal;

From Decimal to Binary;

From Hexadecimal to Binary;

From Binary to Hexadecimal;

First create a menu so that user can choose which conversion they wanna do;

Answer 1

C++ PROGRAM

#include <iostream>

using namespace std;

void BinaryToDecimal(){

    string binary;

    cout<<"Enter Binary Number : "<<endl;

    cin>>binary;

    string num = binary;

    int decimal = 0;

    int base = 1;

    int len = num.length();

    for (int i = len - 1; i >= 0; i--) {

        if (num[i] == '1')

            decimal += base;

        base = base * 2;

    }

    cout<<"Conversion of Binary Number "<<binary<<" to Decimal Number is: "<<decimal<<endl;

    

}

void DecimalToBinary(){

    int decimal;

    cout<<"Enter Decimal Number : "<<endl;

    cin>>decimal;

    int s=decimal;

    

    int binary[32];

  

    

    int i = 0;

    while (decimal > 0) {

  

        binary[i] = decimal % 2;

        decimal = decimal / 2;

        i++;

    }

  

cout<<"Conversion of Decimal Number "<<s<<" to binary Number is: ";

    for (int j = i - 1; j >= 0; j--)

        cout << binary[j];

}

void HexadecimalToBinary(){

    char hexa[10000];

    cout<<"Enter Hexadecimal Number : "<<endl;

    cin>>hexa;

    long int i = 0;

   cout<<"Conversion of Hexadecimal Number "<<hexa<<" to binary Number is: ";

  

    while (hexa[i]) {

  

        switch (hexa[i]) {

        case '0':

            cout << "0000";

            break;

        case '1':

            cout << "0001";

            break;

        case '2':

            cout << "0010";

            break;

        case '3':

            cout << "0011";

            break;

        case '4':

            cout << "0100";

            break;

        case '5':

            cout << "0101";

            break;

        case '6':

            cout << "0110";

            break;

        case '7':

            cout << "0111";

            break;

        case '8':

            cout << "1000";

            break;

        case '9':

            cout << "1001";

            break;

        case 'A':

        case 'a':

            cout << "1010";

            break;

        case 'B':

        case 'b':

            cout << "1011";

            break;

        case 'C':

        case 'c':

            cout << "1100";

            break;

        case 'D':

        case 'd':

            cout << "1101";

            break;

        case 'E':

        case 'e':

            cout << "1110";

            break;

        case 'F':

        case 'f':

            cout << "1111";

            break;

        default:

            cout << "\nInvalid hexadecimal digit "<<hexa[i];

        }

        i++;

    }

    

    

    

}

void BinaryToHexadecimal(){

    int Binary;

    cout<<"Enter Binary Number : "<<endl;

    cin>>Binary;

    int s=Binary;

    int hexa[10000];

  int i = 1, j = 0, rem, dec = 0;

  while (Binary > 0)

  {

   rem = Binary % 2;

   dec = dec + rem * i;

   i = i * 2;

   Binary = Binary / 10;

  }

   i = 0;

  while (dec != 0)

  {

   hexa[i] = dec % 16;

   dec = dec / 16;

   i++;

  }

  cout<<"Conversion of Binary Number "<<s<<" to Hexadecimal is: ";

  for (j = i - 1; j >= 0; j--)

  {

   if (hexa[j] > 9)

   {

    cout<<(char)(hexa[j] + 55);

   }

   else

   {

    cout<<hexa[j];

   }

  }

}

int main() {

int i;

cout<<"Enter your choice: "<<endl;

cout<<"1. From Binary to Decimal\n"<<"2. From Decimal to Binary\n"<<"3. From Hexadecimal to Binary\n"<<"4. From Binary to Hexadecimal"<<endl;

cin>>i;

if(i==1){

BinaryToDecimal();    

}

else if(i==2){

    DecimalToBinary();

}

else if(i==3){

    HexadecimalToBinary();

}

else if(i==4){

    BinaryToHexadecimal();

}

    return 0;

}

EXAMPLES :

INPUT 1 :

OUTPUT1:

INPUT2:

OUTPUT2:

INPUT3:

OUTPUT3:

INPUT4:

OUTPUT4: