I noticed when I use the system function to clear a screen in a while loop my computer seems to get really loud like the processor is working a lot harder and when I close the program every thing goes back to normal,I wonder why this happens,
I will start off by guessing because maybe there is so much system calls being made in a short period of time?
here is an example with a simple console clock
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struct tm* t2;
// time in a loop we will need to keep creating new tm objects to get current time
timeNow2 = time(0);
t2 = localtime(&timeNow2);
cout << t->tm_hour << ":" << t->tm_min << ":" << t->tm_sec << endl;
Not only are you spawning a new process repeatedly, but that loop is also executing as fast as possible, resulting in 100% utilization of the core it is running on. This will heat up the processor, resulting in higher fan speeds.