题解 | 友元全局函数
#include <iostream>
using namespace std;
class Person {
// write your code here......
friend void showAge(Person& P);
public:
Person(int age) {
this->age = age;
}
private:
int age;
};
void showAge(Person& p) {
cout << p.age << endl;
}
int main() {
Person p(10);
showAge(p);
return 0;
}
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