本关任务：编译时的多态，根据上下文代码，写出func函数的3个重载函数，使得输出为： value of x is 7 value of x is 9.132 value of x and y is 85, 64

以下是可能的实现：

#include <iostream>
using namespace std;

void func(int x) {
    cout << "value of x is " << x << endl;
}

void func(double x) {
    cout << "value of x is " << x << endl;
}

void func(int x, int y) {
    cout << "value of x and y is " << x << ", " << y << endl;
}

int main() {
    int x = 7;
    double y = 9.132;
    func(x);
    func(y);
    func(x, y);
    return 0;
}

输出结果：

value of x is 7
value of x is 9.132
value of x and y is 7, 9