Timer with a 1 second resolution
by Curtis Krauskopf
Q: I need a simple timer that can track the number
of seconds between two events.
A:
You want to use the time() function. This
code snippet will do what you want:
#include <time.h>
...
...
time_t startTime;
startTime = time(NULL);
// do some long process...
time_t stopTime;
stopTime = time(NULL);
time_t elapsedTime = stopTime - startTime;
printf("The number elapsed seconds is %ld",elapsedTime);
...
The time() function returns a long integer that represents
the number of seconds since midnight of January 1, 1970.
By simply subtracting the value of the beginning time
from the current time, you will have the number of elapsed
seconds.
A much more accurate timer with a resolution
better than 1,000,000th of a second is
available on Windows systems by using a Windows API.
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