摘要： #include <fstream>using namespace std;LARGE_INTEGER litmp;LONGLONG QPart1,QPart2;double dfMinus, dfFreq, dfTim;QueryPerformanceFrequency(&litmp);dfFreq = (double)litmp.QuadPart; // 获得计数器的时钟频率ofstream fg;CString file = "d:\\17.txt";fg.open(file,ios::app);QueryPerformanceCounter(&a 阅读全文