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C++ keywords: class

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< cpp‎ | keyword
Revision as of 22:58, 2 November 2012 by P12bot (Talk | contribs)

 
 
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Usage

  • declaration of a class
  • In a class template or function template, class can be used as an alternative to typename to introduce type template parameters.
  • If a function or a variable exists in scope with the name identical to the name of a class type, class can be prepended to the name for disambiguation, resulting in an elaborated type specifier

Example

class Foo;  // forward declaration of a class
 
class Bar { // definition of a class
  public:
    Bar(int i) : m_i(i) {}
  private:
    int m_i;
};
 
template <class T> // template argument
void qux() {
    T t;
}
 
int main()
{
    Bar Bar(1);
    class Bar Bar2(2); // elaborated type
}