Allows the creation of user defined (enumerated) data types.
Enumerated data types consist of a value defined as a symbolic constant, known as an enumerator, starting from zero.
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#include <iostream> using namespace std ; enum ResistorBand { Black, //assigned 0 Brown, //assigned 1 Red, //assigned 2 Orange, //assigned 3 Yellow, //assigned 4 Green, //assigned 5 Blue, //assigned 6 Violet, //assigned 7 Grey, //assigned 8 White //assigned 9 }; int main () { ResistorBand myValue = Green ; cout << "The enum in the 5th element is Green with a value of: " << myValue << endl; return 0; } |
Compile & Run:
| The enum in the 5th element is Green with a value of: 5 |
The defined variable (myValue from above) could have been declared along with the enum definition, as per line 16:
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#include <iostream> using namespace std ; enum ResistorBand { Black, //assigned 0 Brown, //assigned 1 Red, //assigned 2 Orange, //assigned 3 Yellow, //assigned 4 Green, //assigned 5 Blue, //assigned 6 Violet, //assigned 7 Grey, //assigned 8 White //assigned 9 } myValue ; int main () { myValue = Green ; cout << "The enum in the 5th element is Green with a value of: " << myValue << endl; return 0; } |
Compile & Run:
| The enum in the 5th element is Green with a value of: 5 |
Specific values can also be defined:
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#include <iostream> using namespace std ; enum ResistorBand { Black, //assigned 0 Brown, //assigned 1 Red, //assigned 2 Orange, //assigned 3 Yellow, //assigned 4 Green = 42, //assigned 5 Blue, //assigned 6 Violet, //assigned 7 Grey, //assigned 8 White //assigned 9 } myValue ; int main () { myValue = Green ; cout << "The enum in the 5th element is Green with a value of: " << myValue << endl; return 0; } |
Compile & Run:
| The enum in the 5th element is Green with a value of: 42 |