查看“C++ Address-of 运算符：&”的源代码

==示例：静态成员的地址==

 // expre_Address_Of_Operator.cpp
 // C2440 expected
 class PTM {
 public:
     int iValue;
     static float fValue;
 };
 
 int main() {
    int   PTM::*piValue = &PTM::iValue;  // OK: non-static
    float PTM::*pfValue = &PTM::fValue;  // C2440 error: static
    float *spfValue     = &PTM::fValue;  // OK
 }


==示例：引用类型的地址==
 // expre_Address_Of_Operator2.cpp
 // compile with: /EHsc
 #include <iostream>
 using namespace std;
 int main() {
    double d;        // Define an object of type double.
    double& rd = d;  // Define a reference to the object. 
 
    // Obtain and compare their addresses
    if( &d == &rd )
       cout << "&d equals &rd" << endl;
 }


 &d equals &rd


==示例：函数地址作为参数==
 // expre_Address_Of_Operator3.cpp
 // compile with: /EHsc
 // Demonstrate address-of operator &
 
 #include <iostream>
 using namespace std; 
 
 // Function argument is pointer to type int
 int square( int *n ) {
    return (*n) * (*n);
 }
 
 int main() {
    int mynum = 5;
    cout << square( &mynum ) << endl;   // pass address of int
 }


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