Standard C Date & Time
  
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  & Time on one page, or view entries individually:
  
    
      | asctime | a textual version of the time | 
    
      | clock | returns the amount of time that the
      program has been running | 
    
      | ctime | returns a specifically formatted
      version of the time | 
    
      | difftime | the difference between two
      times | 
    
      | gmtime | returns a pointer to the current
      Greenwich Mean Time | 
    
      | localtime | returns a pointer to the current
      time | 
    
      | mktime | returns the calendar version of a
      given time | 
    
      | setlocale | sets the current locale | 
    
      | strftime | returns individual elements of the
      date and time | 
    
      | time | returns the current calendar time
      of the system |