Program to convert Binary to Decimal Number

0 Suresh Chand March 28, 2021

In this example, We will learn how to convert binary number to decimal number.

To understand this example, You must have knowledge in following topics

#include <iostream>
#include <cmath>

using namespace std;

int convertBinaryToDecimal(long long);

int main()
{
    long long n;

    cout << "Enter a binary number: ";
    cin >> n;
 
    cout << n << " in binary = " << convertBinaryToDecimal(n) << " in decimal";
    return 0;
}

int convertBinaryToDecimal(long long n)
{
    int decimalNumber = 0, i = 0, remainder;
    while (n!=0)
    {
        remainder = n%10;
        n /= 10;
        decimalNumber += remainder*pow(2,i);
        ++i;
    }
    return decimalNumber;
}

The output of above program is

Enter a binary number: 110
110 in binary = 6 in decimal

In the above example, We have created one function convertBinaryToDecimal() which converts the binary number to the decimal number.

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