Question

1. Write a C++ program that defines a function that converts a binary number string to an integer. However, if the binary number is greater than or equal to 4,294,967,296, the function must return 0.

Answer 1

#include <iostream>
#include <string>

using namespace std;

unsigned int binary_to_decimal(string s) {
    if (s.length() > 32)
        return 0;
    unsigned int value = 0;
    for (int i = 0; i < s.size(); i++) {
        value *= 2;
        value += s[i] - '0';
    }
    return value;
}

int main() {
    string s;
    cout << "Enter a binary string: ";
    cin >> s;
    cout << s << " in decimal is " << binary_to_decimal(s) << endl;
    return 0;
}