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GeekInterview.com > Interview Questions > Programming > C++
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| Question: What is a scope resolution operator?
Answer: A scope resolution operator (::), can be used to define the member functions of a class outside the class. |
| December 12, 2008 12:24:52 |
#2 |
| burraganesh |
Member Since: December 2008 Total Comments: 20 |
RE: What is a scope resolution operator?
|
Scope resolution:As the name itself indicates,it resolves global scope to local scope
Ex:
int a=10;
int main()
{
a=20;
cout<<::a<<endl;//prints 20
return 0;
}
Useful to convey ownership of class towards a function
Ex:
class ABC{
public:
static void fun()
{
cout<<"ABC"<<endl;
}
};
class XYZ{
public:
static void fun()
{
cout<<"XYZ"<<endl;
}
};
int main()
{
ABC::fun();
XYZ::fun();
return 0;
} |
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