#include <string>
#include <iostream>
 
void split(const std::string& s) {
    size_t sz = s.size();
    size_t half_sz = sz / 2;
    std::string left = s.substr(0, half_sz);
    std::string right;
 
    if ((sz % 2) == 0) {
        right = s.substr(half_sz, half_sz);
    } else {
        right = s.substr(half_sz + 1, half_sz);
    }
 
    std::cout << "String: " << s
              << "\n* Left:  " << left
              << "\n* Right: " << right
              << '\n' << std::endl;
}
 
int main() {
    split("Hello."); // 6 characters, we're good.
    split("Heya.");  // 5 characters, 'y' will be discarded.
    split("abba");   // 4 characters, we're good.
}

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