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  1. #include <stdio.h>
  2.  
  3.  
  4. /* Its OK to make the type global, that way all functions can use it */ 
  5. /* Note that "struct date" is NOT a global variable */ 
  6. struct date 
  7.  
  8. { 
  9.  
  10.     int month; 
  11.  
  12.     int day; 
  13.  
  14.     int year; 
  15.  
  16. }; 
  17.  
  18. void printNextDay (struct date dateval);  /* function prototype */
  19.  
  20.  
  21. int main () 
  22. {  
  23.     struct date today; /* local variable to main */ 
  24.  
  25.     /* Set up a date to pass to the printNextDay function */
  26.     today.day = 3;
  27.     today.year = 2026; 
  28.     today.month = 2; 
  29.  
  30.     /* pass by value the information to our function*/  
  31.     printNextDay (today);   
  32.  
  33.     /* The value of today will be unchanged - still the 17th */  
  34.     printf ("%d/%d/%d \n", today.month, today.day, today.year-2000);
  35.  
  36.  
  37.     return (0); 
  38.  
  39. } /* main */ 
  40.  
  41. /**************************************************************************
  42. **
  43. ** Function: printNextDay
  44. **
  45. ** Description: Simply prints the next day of a given 20th century date 
  46. ** in MM/DD/YYYY format. Does not check for last day in the month (known
  47. ** issue to be addressed in the future)
  48. **
  49. ** Parameters: dataval - a structure with month, day, and year
  50. **
  51. ** Returns: void
  52. **
  53. **********************************************************************/ 
  54.  
  55. void printNextDay (struct date dateval) 
  56. { 
  57.  
  58.     ++dateval.day; /* add a day to the value passed into this function */ 
  59.  
  60.     printf ("%d/%d/%d\n", dateval.month, dateval.day, dateval.year-2000); 
  61.  
  62.     return; /* optional, no value returned since it returns void */ 
  63.  
  64. } /* printNextDay */
  65.  
Success #stdin #stdout 0.01s 5284KB
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2/4/26
2/3/26
https://ideone.com/sgAfRK
language:
C (gcc 8.3)
created:
1 day ago
visibility:
public

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