C Tutorial/Data Type/enum
Using an enumeration type
<source lang="cpp">#include <stdio.h> enum months {
JAN = 1, FEB, MAR, APR, MAY, JUN, JUL, AUG, SEP, OCT, NOV, DEC };
int main() {
enum months month; const char *monthName[] = { "", "January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December" }; for ( month = JAN; month <= DEC; month++ ) { printf( "%2d%11s\n", month, monthName[ month ] ); } return 0;
}</source>
1 January 2 February 3 March 4 April 5 May 6 June 7 July 8 August 9 September 10 October 11 November 12 December