It is sometimes useful to display the current date in your terminal.
For that the time() system call function is the best one.
Let’s see an example within this tiny tutorial of C programming language:

// main.c
#include <time.h>
#include <stdio.h>

int main () {
	time_t myTime;
	time(&myTime);
	printf("The time is: %s", ctime(&myTime));
	return 0;
}

Compiling and executing.
And the result is:

$ The time is: Wed Feb 22 14:36:43 2012

All simply.