The asctime() function is defined in <ctime> header file.
asctime() prototype
char* asctime(const struct tm * time_ptr);
The asctime() function takes a pointer to tm object as its parameter and returns a text representation for a given calendar time of the form:
Www Mmm dd hh:mm:ss yyyy
asctime() Representation
| Type | Description | Obtained From | Values |
|---|---|---|---|
| Www | 3 letter day of week |
time_ptr -> tm_wday
|
Mon to Sun |
| Mmm | 3 letter month names |
time_ptr -> tm_mon
|
Jan to Dec |
| dd | 2 digit days of month |
time_ptr -> tm_mday
|
00 to 31 |
| hh | 2 digit hour |
time_ptr -> tm_hour
|
00 to 23 |
| mm | 2 digit minute |
time_ptr -> tm_min
|
00 to 59 |
| ss | 2 digit second |
time_ptr -> tm_sec
|
00 to 59 |
| yyyy | 4 digit year |
time_ptr -> tm_year + 1900
|
4 digit year |
asctime() Parameters
- time_ptr: pointer to a tm object to be converted.
asctime() Return value
- Pointer to a null terminated string the points to the character representation of the given time.
Example: How asctime() function works?
#include <iostream>
#include <ctime>
using namespace std;
int main()
{
time_t curr_time;
time(&curr_time);
cout << "Current date and time: " << asctime(localtime(&curr_time));
return 0;
}
When you run the program, the output will be:
Current date and time: Tue Mar 21 13:52:57 2017
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