Interesting C + + topics

1#include <iostream>2#include <stdlib.h>3 using namespacestd;4 5 classA6 { 7  public: 8     int_a;9 A ()Ten     {  one_a =1;  a     }  -     voidPrint () -     {  theprintf"%d\n", _a);  -     }  - };  -  + classB: publicA - {  +  public:  a     int_a; at B () -     {  -_a =2;  -     }  - };  -  in intMain () - {  to b b; + B.print (); -printf"%d\n", b._a);  the     return 0;  *}

The result of the Operation Is:

Subclasses overwrite the variables of the parent class

1#include <iostream>2#include <stdlib.h>3 using namespacestd;4 5 class Base 6 { 7 Private: 8     intm_i;9     intm_j;Ten  public:  one     Base(inti): m_j (i), m_i (m_j) {} a     Base(): M_j (0), m_i (m_j) {} -     intGet_i () {returnm_i;}  -     intGet_j () {returnm_j;}  the };  -  - intMain () - {  +     BaseObj98);  -Cout<<obj.get_i () <<Endl +<<obj.get_j () <<endl; a  at     return 0;  -}

The result of the Operation Is:

The order in which the constructor initializes the variables is performed in the order in which the member variables are Declared.

Interesting C + + topics