4

Code Understanding

enum divisions{first=1,second=2,third=3};
enumerated data type divisions with value list and user given values declared here.

int main() {
divisions d=first;
A variable d is declared and is assigned a possible value from the given enum list.

cout<<sizeof(d)<<endl;
sizeof operator is applied to enum data type which will essentially be 4 . For DOS based systems it will show 2.

return 0;
}

Notes

• In the above example only sizeof has been calculated and the value assigned to variable d has never been used, so compiler warning may come.
• Remember that due to inherent nature of DOS system the integer size if defined as 2 so the output of this program for Turbo C++ in DOS would be 2.
• Read the following article to understand the basic concepts of enumeration in C++.
  http://computersirkiclass.com/?p=4547

Common Errors

Suggested Filename(s): enumsize.cpp, enum-sizeof.cpp