C Date and Time Functions - Example


The following C source code snippet prints the current time to the standard output stream.

#include #include #include int main(void) { time_t_current_time; char* c_time_string; /* Obtain current time as seconds elapsed since the Epoch. */ current_time = time(NULL); if (current_time == ((time_t)-1)) { (void) fprintf(stderr, "Failure to compute the current time."); return EXIT_FAILURE; } /* Convert to local time format. */ c_time_string = ctime(&current_time); if (c_time_string == NULL) { (void) fprintf(stderr, "Failure to convert the current time."); return EXIT_FAILURE; } /* Print to stdout. */ (void) printf("Current time is %s", c_time_string); return EXIT_SUCCESS; }

The output is:

Current time is Sun Oct 28 12:30:37 2012

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