fig18_08.cpp

来自「经典vc教程的例子程序」· C++ 代码 · 共 27 行

// Fig. 18.8: fig18_08.cpp
// An example of a union 
#include <iostream.h>

union Number {
   int x;
   float y;
};

int main()
{
   Number value;
	
   value.x = 100;
   cout << "Put a value in the integer member\n"
        << "and print both members.\nint:   " 
        << value.x << "\nfloat: " << value.y << "\n\n";
	
   value.y = 100.0;
   cout << "Put a value in the floating member\n" 
        << "and print both members.\nint:   " 
        << value.x << "\nfloat: " << value.y << endl;
   return 0;
}