#include <bstl/big_integer.hpp>
#include <bstl/big_decimal.hpp>
#include <bstl/string.hpp>

#include <iostream>

int main() {
    using bstl::BigInteger;
    using bstl::BigDecimal;
    using bstl::String;

    std::cout << "=== BetterSTL cin/cout Demo ===\n\n";

    // BigInteger 示例
    std::cout << "BigInteger Example:\n";
    std::cout << "Enter a large integer: ";
    BigInteger bi;
    std::cin >> bi;
    std::cout << "You entered: " << bi << "\n";
    std::cout << "Doubled: " << (bi * BigInteger(2)) << "\n\n";

    // BigDecimal 示例
    std::cout << "BigDecimal Example:\n";
    std::cout << "Enter a decimal number: ";
    BigDecimal bd;
    std::cin >> bd;
    std::cout << "You entered: " << bd << "\n";
    std::cout << "Doubled: " << (bd * BigDecimal(2)) << "\n\n";

    // String 示例
    std::cout << "String Example:\n";
    std::cout << "Enter a word: ";
    String str;
    std::cin >> str;
    std::cout << "You entered: " << str << "\n";
    std::cout << "Uppercase: " << str.upper() << "\n";
    std::cout << "Lowercase: " << str.lower() << "\n\n";

    std::cout << "Demo completed!\n";
    return 0;
}