Timer.cc

#include <ctime>
#include <iomanip>
#include <iostream>

using std::setw;
using std::cout;
using std::endl;

class Timer {
  private:
		clock_t start, finish;
	public:
		Timer() { start = clock(); }
		~Timer() { finish = clock();
			cout << setw(5) << " "
			<< "Total time: "
			<< ((double)(finish - start)/CLOCKS_PER_SEC)
			<< endl; }
};

int main() {

	Timer t;

	size_t i;
	for ( i = 0; i < 100000000; i++ );
	
	return 0;
}

/*
output:

Total time: 0.358133

*/