C ctime() function

C ctime() function - Convert a time value to a date and time string

The ctime() function is used to convert the time value pointed to by time to local time in the form of a character string. A time value is usually obtained by a call to the time() function.

The function is equivalent to: asctime(localtime(clock)).

Syntax:

char *ctime(const time_t *timer)

Parameters:

Return value from ctime()

• The ctime() function returns a pointer to the character string result.
• If the function is unsuccessful, it returns NULL. 

Example: ctime() function

The following example prints a message giving the current date and time:

#include <time.h>
#include <stdio.h>
 
int main(void)
{
   time_t ltime;

   time(<time); 

   printf("Current date and time is %s", ctime(<time));
}

Output:

Current date and time is Tue Dec 20 09:05:22 2022

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