An anonymous union. : union « Data Types « C++ Tutorial

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C++ Tutorial » Data Types » union

2.35.4.An anonymous union.

#include <iostream> 

#include <cstring> 

using namespace std; 

 

int main() 

{ 

  // define anonymous union 

  union { 

    long l; 

    double d; 

    char s[4]; 

  } ; 

 

  // now, reference union elements directly 

  l = 100000; 

  cout << l << " "; 

  d = 123.2342; 

  cout << d << " "; 

  strcpy(s, "hi"); 

  cout << s; 

 

  return 0; 

}

100000 123.234 hi

2.35.union
	2.35.1.	An example of a union
	2.35.2.	Put int and float into a union
	2.35.3.	A union with method
	2.35.4.	An anonymous union.
	2.35.5.	A union is created with several data types.
	2.35.6.	Using an anonymous union: members integer1, double1 and charPtr share the same space
	2.35.7.	Unions and Classes Are Related

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