example2_with_explicit.cpp

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#include <iostream>

class MyClass {
public:
    explicit MyClass(int x) {
        std::cout << "Constructor called with " << x << std::endl;
    }
};

void printMyClass(const MyClass& obj) {
    std::cout << "In printMyClass function" << std::endl;
}

int main() {
    // MyClass obj = 42;  // Error: Implicit conversion is not allowed
    MyClass obj1(42);  // OK: Direct initialization is allowed
    // printMyClass(100);  // Error: Implicit conversion is not allowed
    printMyClass(MyClass(100));  // OK: Explicit conversion is required

    return 0;
}