+ 1

In public section- is 'var' acting as a data type for (a) during initialization. Or is (a) being assigned to variable 'var'.

class MyClass { public: MyClass(int a) : var(a) { } private: int var; };

13th Feb 2017, 7:36 AM
Black Temple
Black Temple - avatar
3 odpowiedzi
+ 1
It looks like you trying to use a Constructor Initialization List. The argument a is passed to the constructor and var(a) assigns the argument a to the variable var. If you have more than 1 you can comma separate them. See code here: https://goo.gl/37dOqi or here in the code playground: https://code.sololearn.com/c8Ad35RlKEvg
13th Feb 2017, 9:44 AM
ChaoticDawg
ChaoticDawg - avatar
+ 1
#include <iostream> using namespace std; class MyClass { public: // Contructor Initialization Lists Example MyClass(int a): var(a), hi("Hello") {} int getVar(){ return var; } string sayHello(){ return hi; } here's that code and in public section there is this "hi" . Is that a variable too.. how can it have no d ata type? MyClass c(10); int a = c.getVar(); cout << a << endl << c.sayHello() << endl; return 0; }
13th Feb 2017, 11:19 AM
Black Temple
Black Temple - avatar
0
It has a data type of string and is declared just below the int var in the private section of MyClass. Take another look. You don't have all the code there.
13th Feb 2017, 5:10 PM
ChaoticDawg
ChaoticDawg - avatar