cpp program to convert binary to decimal

In this program, you will learn to convert the binary number into a decimal number in cpp programming langauge.

Following is the conversion binary to decimal number

code:

#include <iostream>

#include <cmath>

using namespace std;

int main()

{

    long  num;

    cout << "Enter a binary number: ";

    cin >> num;

 

    int decimalNumber = 0, i = 0, rem;

    while (num!=0)

    {

        rem = num%10;

        num /= 10;

        decimalNumber += rem*pow(2,i);

        ++i;

    }

        cout  << decimalNumber << " in decimal";

return 0;

}

Output:

Enter a binary number: 101

5 in decimal