学步园

这段代码示范如何用C实践Timer

这个范例用Borland C++ 3.1编译册试过...

#include <time.h><br /> #include <stdio.h><br /> #include <stdlib.h></p> <p>double BeginTimer()<br /> {<br /> //timer declaration<br /> double Begin; //initialize Begin</p> <p> Begin = clock() / CLK_TCK; //start the timer</p> <p> return Begin;<br /> }<br /> double EndTimer(double begin)<br /> {<br /> double End;<br /> End = clock() / CLK_TCK; //stop the timer<br /> return End - begin;<br /> }</p> <p>int main ()<br /> {<br /> char input;<br /> double passed;<br /> double begin = BeginTimer();<br /> printf ("Timer set to: %.2f/n", begin); // print the initialised timer (0)</p> <p> // process to be timed goes here<br /> printf ("Enter something to stop the timer: ");</p> <p> scanf ("%c", &input);</p> <p> passed = EndTimer(begin); // stop the timer</p> <p> printf("Ticks passed: %.4f secound/n",passed);</p> <p> system("pause");<br /> return 0;<br /> }