Tickcount and milliseconds in C++

Question

HOw do I convert from TickCounts to Milliseconds?

this is what I used:

long int before = GetTickCount();
long int after = GetTickCount();

I want the difference of it in seconds.

Thanks!

Answer 1

int seconds = (after - before) /1000;

Answer 2

I'm not sure what OS/platform you're using, but there should be a call that returns the tick time in milliseconds.

time = after - before * <tick time in milliseconds>;

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Edit:

I see that this is a Windows function that returns milliseconds already. The other answers are better.

Answer 3

GetTickCount() returns the time in milliseconds. so (after - before)/<milli equivalent> should give you time in seconds

Answer 4

for more precision, there is also QueryPerformanceCounter()

Answer 5

Did you try use boost? There is a type time_duration for this, and functions like seconds(), nanoseconds(), miliseconds()

More information

Answer 6

int seconds = (after - before + 500) / 1000;

or:

double seconds = (after - before) / 1000.0;