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function days in month

/ Published in: C
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  1. int days_in_month(int month) {
  2. 	const int days[] = {0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
  3. 	switch (month) {
  4. 		case 1:
  5. 			printf("January has %d days\n", days[month]);
  6. 			break;
  7. 		case 2:
  8. 			printf("February usually has %d days\n", days[month]);
  9. 			break;
  10. 		case 3:
  11. 			printf("March has %d days\n", days[month]);
  12. 			break;
  13. 		case 4:
  14. 			printf("April has %d days\n", days[month]);
  15. 			break;
  16. 		case 5:
  17. 			printf("May has %d days\n", days[month]);
  18. 			break;
  19. 		case 6:
  20. 			printf("June has %d days\n", days[month]);
  21. 			break;
  22. 		case 7:
  23. 			printf("July has %d days\n", days[month]);
  24. 			break;
  25. 		case 8:
  26. 			printf("August has %d days\n", days[month]);
  27. 			break;
  28. 		case 9:
  29. 			printf("September has %d days\n", days[month]);
  30. 			break;
  31. 		case 10:
  32. 			printf("October has %d days\n", days[month]);
  33. 			break;
  34. 		case 11:
  35. 			printf("November has %d days\n", days[month]);
  36. 			break;
  37. 		case 12:
  38. 			printf("December has %d days\n", days[month]);
  39. 			break;
  40. 		default:
  41. 			printf("Hmmm.. that month wasn't programmed in.\n");
  42. 			break;
  43. 	}	// end switch
  44.  
  45. 	return days[month];
  46. }		// end days_in_month

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