CPP Accessing Class Members

Accessing Class Members on object created on the free store.

  • To access the getAge member function of an object pointed to by pPerson, you could write:
    // parentheses are used to ensure that pPerson is dereferenced first
  • Because this is cumbersome, C++ provides a shorthand operator for indirect access: the class member access operator (->), which is created by typing the dash (-) immediately followed by the greater-than symbol (>).
    Here is an Example
    #include <iostream>
    using namespace std;
    class Person {
      int getAge() {return age;}
      void setAge( int Age) {age=Age;}
      int age;
    int main() {
       Person * pPers = new Person;
    // (*pPers).setAge(45); 
    // Instead use:
       cout << "The person age is " << pPers->getAge() << endl;  
       delete pPers;
       return 0;
    When we run this application the result will be:
    The person age is 34

    You can download this example here (needed tools can be found in the right menu on this page).

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