Example: Binary to Decimal using Manual Shift in C++

C
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Python
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// Binary to Decimal using Manual Shift
#include <iostream>

int main() {
    long long binaryNumber;
    std::cout << "Enter a binary number: ";
    std::cin >> binaryNumber;

    long long decimalNumber = 0;
    long long base = 1; // Represents 2^0, 2^1, 2^2, ...
    int remainder;

    // Step 1: Loop while the binary number is not zero
    while (binaryNumber != 0) {
        // Step 2: Get the last digit
        remainder = binaryNumber % 10;
        // Step 3: Remove the last digit
        binaryNumber /= 10;
        // Step 4: Add (remainder * current base value) to decimalNumber
        decimalNumber += remainder * base;
        // Step 5: Double the base for the next power of 2
        base *= 2;
    }

    std::cout << "Decimal equivalent: " << decimalNumber << std::endl;

    return 0;
}