程序时间测试

#include <stdio.h>#include <time.h>clock_t start,stop;double duration;void printN(int n){int i=0;if(n){printN(n-1);printf("%d ",n);}}int main(){start = clock();//测试程序 printN(100000);stop = clock();duration = (double)(stop - start)/CLK_TCK;printf("\n%lf",duration);return 0;}