c++ 参数引用传递

#include <iostream>
#include <thread>
#include<windows.h>
using namespace std;
void A(int& a) {
    cout <<"address" << &a << endl;;
    cout << "value" << a << endl;;
    a = 100;

}
int main() {
    int b = 10;
    cout << "address b is :" << &b << endl;;
    cout << "********"<<endl;
    A(b);
    cout << b;

    return 0;
}

要是直接在参数中传入指针可不可以呢，下面是示例代码，是不可以的

#include <iostream>
#include <thread>
#include<windows.h>
using namespace std;
void A(int& a) {
    cout << "address" << &a << endl;;
    cout << "value" << a << endl;;
    a = 100;

}
int main() {
    int b = 10;
    int* c = &b;
    cout << "address b is :" << &b << endl;;
    cout << "********" << endl;
    A(b);
    cout << b;
    //A(c);//这样会报错
    A(*c);//这样就不会
    return 0;
}