How does the working principle of a C++ timer work?

The working principle of a C++ timer is by setting a timer, triggering an event, or executing specific code when a certain time is reached. Here is how a C++ timer works:

1. Create a timer: Use a timer library in C++ or the timer functionality provided by the system to create a timer object.
2. Set a timer: by calling the methods of the timer object, you can set the time interval and trigger event of the timer. The timer can be set to repeat execution at a certain time interval or to only execute once.
3. Start the timer: call the start method of the timer object to begin timing with the timer.
4. Handling trigger events: when the timer reaches the set time interval, trigger an event or execute specific code. Trigger events can be handled through mechanisms such as callback functions or signals.
5. Choose to either repeat or stop the timer: Depending on your needs, you can opt for the timer to continue repeating and triggering events, or to halt the timer and end the timing process.

In summary, the working principle of a C++ timer is to create a timer object, set the time interval and trigger event, start the timer, and when the set time is reached, trigger events or execute code. Depending on the requirements, you can choose to repeat or stop the timer.