Initialize inner object using initialization syntax : class combination « Class « C++ Tutorial

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C++ Tutorial » Class » class combination

9.15.2.Initialize inner object using initialization syntax

#include <iostream>  

using namespace std;  

  

class IntPair {  

public:  

  int a;  

  int b;  

  

  IntPair(int i, int j) : a(i), b(j) { }  

};  

  

class MyClass {  

  IntPair nums;

public:  

   

  MyClass(int x, int y) : nums(x,y) { }  

  

  int getNumA() { return nums.a; }  

  int getNumB() { return nums.b; }  

};  

  

int main()  

{  

  MyClass ob1(7, 9), ob2(5, 2);  

  

  cout << "Values in ob1 are " << ob1.getNumB() << 

          " and " << ob1.getNumA() << endl;  

  

  cout << "Values in ob2 are " << ob2.getNumB() << 

          " and " << ob2.getNumA() << endl; 

   

  return 0;  

}

Values in ob1 are 9 and 7
Values in ob2 are 2 and 5

9.15.class combination
	9.15.1.	Use class as a member field
	9.15.2.	Initialize inner object using initialization syntax
	9.15.3.	Demonstrating composition--an object with member objects

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