# Convert Binary to Decimal in C++

Here you will learn how to convert binary to decimal in C++.

We can convert a binary number into decimal in following way.
• Multiply each digit from right to left by power of 2. Here the power of 2 will be the position of the digit starting from 0.
• Now add all the values to obtain decimal number.

## Convert Binary to Decimal in C++

Output
Enter any Binary number:111
The Decimal conversion of 111 is 7

### 2 thoughts on “Convert Binary to Decimal in C++”

1. i have seen this approach on the net many times, can u give us something new….like another method to perform this particular conversion ..

1. /*This is another approach, but this has a flaw while used in C++. This code works perfectly in C language.
This program uses the Algo with the least no of executable lines in C to perform the binary to decimal conversion, hence the quickest known to me. To know about the flaw or any doubt in the code U can ask me on this email id : [email protected]*/

#include

void main()
{
long int bnum,dnum=0,base=1,rem;

cout<<"Enter the binary number : ";
cin>>bnum;

while(bnum!=0)
{
rem = bnum%10;
dnum = dnum+rem*base;
base = base*2;
bnum = bnum/10;
}
cout<<"nEquivalent decimal value : "<<dnum;
}

//cheers!!!