Get the system time

Syntax

C time function has the following syntax.

Header

C time function is from header file time.h.

Description

C time function returns the current calendar time of the system or -1 if the system has no time.

The time() function can be called either with a null pointer or with a pointer to a variable of type time_t. If the latter is used, the variable will also be assigned the calendar time.

Example

Use C time function to get the systme time.

#include <time.h>
#include <stdio.h>
/* w w w .  j  a v a2s  . c om*/
int main(void)
{
  struct tm *ptr;
  time_t lt;
  lt = time(NULL);
  ptr = localtime(&lt);
  printf(asctime(ptr));

  return 0;
}

The code above generates the following result.