Finding size of enumerated data type – Computer Sir Ki Class


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Code Learning #CPP#4567    siteicon   siteicon  

Finding size of enumerated data type

Understanding how enum datatype is stored in memory

Learning Objectives

  • using sizeof for enumerated type data type.

Source Code

TC++ #4567


Source Code

Run Output


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.

sizeof operator is applied to enum data type which will essentially be 4 . For DOS based systems it will show 2.

return 0;


  • 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++.

Common Errors



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


sunmitra| Created: 1-Sep-2018 | Updated: 1-Sep-2018|

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