scoperes.cpp

来自「Think in C++ 2nd」· C++ 代码 · 共 21 行

//: C04:Scoperes.cpp
// From Thinking in C++, 2nd Edition
// Available at http://www.BruceEckel.com
// (c) Bruce Eckel 1999
// Copyright notice in Copyright.txt
// Global scope resolution
int a;
void f() {}

struct S {
  int a;
  void f();
};

void S::f() {
  ::f();  // Would be recursive otherwise!
  ::a++;  // Select the global a
  a--;    // The a at struct scope
}
int main() { S s; f(); } ///:~