C++：如何通过参数切换？

#include<iostream>

int main() {
    int param = 1;

    if (param == 1) {
        std::cout << "Option 1 selected"<< std::endl;
    } else if (param == 2) {
        std::cout << "Option 2 selected"<< std::endl;
    } else {
        std::cout << "Invalid option"<< std::endl;
    }

    return 0;
}

#include<iostream>

int main() {
    int param = 1;

    switch (param) {
        case 1:
            std::cout << "Option 1 selected"<< std::endl;
            break;
        case 2:
            std::cout << "Option 2 selected"<< std::endl;
            break;
        default:
            std::cout << "Invalid option"<< std::endl;
            break;
    }

    return 0;
}