computational time calculation

[vkaul1]

How do I compute computational time for my main program? I know there is a ctime object but dont know what is the best way to use it. My Main file calls 2 three functions also.

[PiMaster]

Here's some code that I made in 5 minutes:

#include <ctime>
#include <cstdio>

void myfunc(){
	//do stuff
	unsigned int x=1;
	while(x<4294967295){//something that takes a long time to execute (around 4 seconds on my laptop)
		++x;}}

int main(){
	clock_t ticks=clock();//keeps track of ticks
	myfunc();//your function
	//update the ticks
	ticks-=clock();
	ticks=-ticks;
	//display the time
	printf("myfunc took %i ticks to run.\nPress <ENTER> to exit\n",ticks);
	getchar();
	return 0;}

First you record the number of ticks before using the function, then you record the number of ticks afterwards.

[vkaul1]

Is the unit of the ticks in seconds?

[Zhuge]

It is in clock ticks. Use the macro CLOCKS_PER_SEC to convert to seconds.