C + + implementation read binary number and convert to decimal output _c language

Topic description

A binary number that contains only 0 and 1 is known, with a length not greater than 10, converted to decimal and output.

Input description

Enter a binary integer n, which is no longer than 10

Output description

The decimal number of the output converted, one row

Sample input

110

Sample output

6

Solution

A lot of people who have learned C + + may think of reading in the form of a character array and counting the decimal output.

No need.

The C + + class library provides a binary data class and can be converted to decimal in its own way.

The code is as follows:

Copy Code code as follows:

#include <iostream>
using namespace Std;
#include <bitset>
int main ()
{
Bitset<16> bint; Bit binary data, and bitset<32>
Cin >> bint;
cout << Bint.to_ulong () << Endl;
return 0;
}