#test.chsh#

一个类c++语言解释器

int x; // global x

int main()
{
 int i;
  
  cout<<"Please input i:";
  cin>>i;

  x = 99; // global x is 99

  if(i == 4) {
    int x; // local x
    int num; // local to if statement

    x = i * 2;
    cout << "Outer local x before loop: "
         << x << "\n";

    while(x--) {
      int x; // another local x

      x = 18;
      cout << "Inner local x: " << x << "\n";
    }

    cout << "Outer local x after loop: "
         << x << "\n";
  }

  // Can't refer to num here because it is local
  // to the preceding if block.
//  num = 10;

  cout << "Global x: " << x << "\n";
}