What is a union?

• we can use a single memory location for more than one variable this is called union.
  union myUnion{
  int var1;
  long var2;
  } newUnion;
  
  share a single memory location for a variable myVar1 and use the same location for myVar2 of different data type.
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• A union is a user-defined data or class type that, at any given time, contains only one object from its list of members. The object can be an array or a class type).
  fr e.g -
  #include
  using namespace std;
  
  union NumericType
  {
  int iValue;
  long lValue;
  double dValue;
  };
  
  int main()
  {
  union NumericType Values = { 10 }; // iValue = 10
  cout
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