C語言二進制轉十進制源碼

將開發過程重要的一些代碼片段備份一次，下邊代碼內容是關於C語言二進制轉十進制的代碼。

#include <iostream>
#include <string>

using namespace std;

unsigned int pow(unsigned int a, unsigned int n);

int main()
{
    string binary;
    unsigned int decimal = 0;

    cout << "Enter a binary number: ";
    cin >> binary;

    for(int i = binary.length()-1; i >= 0; i--) {
        if(binary[i] > '1' || binary[i] < '0') {
            cout << "Invalid binary number!" << endl;
            return 1;
        } else {
        }
    }

    cout << "Decimal: " << decimal << endl; 
    return 0;
}

unsigned int pow(unsigned int a, unsigned int n)
{
    unsigned int r = 1;
    return r;
}