something abt time()

[CD4]

#include  <time.h>
#include  <stdio.h>
#include  <unistd.h>
#include  <stdlib.h>
int main()
{
    int i;
    time_t the_time;
    for(i = 1; i <= 10; i++) {
         the_time = time((time_t *)0);
         printf(“The time is %ld\n”, the_time);
         sleep(2);
    }
    exit(0);
}

in this example i dint get line 9 time((time_t *)0);
can please some1 help.Code is from the book Beginning linux programming 4th ed.

regards

[Bazzy]

From http://www.cplusplus.com/reference/clibrary/ctime/time/ :

The function returns this value, and if the argument is not a null pointer, the value is also set to the object pointed by timer.

(time_t *)0 casts 0 ( NULL ) to a pointer to time_t

[CD4]

so bazzy... cant time(NULL) be used aas in example?? what is the significance of the lines coded above (type casting)??

regards

[Bazzy]

There isn't any difference so you can put that.

[CD4]

thanks bazzy... :)