int main(){王永炎简介
int n = 0;
int a = 0;
int b = 1; int c = 2;
SYSTEMTIME currentTime;
GetSystemTime(¤tTime);
printf("time: %u/%u/%u %u:%u:%u:%u\n",中药提取
currentTime.wYear, currentTime.wMonth, currentTime.wDay,
currentTime.wHour, currentTime.wMinute, currentTime.wSecond,
currentTime.wMilliseconds);
西堤红山for (int i = 0; i < 100000000; i++)
{
if (n == 0)
{
//c = a;
//a = b;
//b = c;
}
}
英菲尼迪万人盛典
GetSystemTime(¤tTime);
printf("time: %u/%u/%u %u:%u:%u:%u\n",
currentTime.wYear, currentTime.wMonth, currentTime.wDay,
currentTime.wHour, currentTime.wMinute, currentTime.wSecond,
currentTime.wMilliseconds);
system("pause");
return 0;
醋酸乙烯}
测试⽤例执⾏情况:⽆论if内是否有内容,其执⾏时间⼤概都为220-260ms(本机),故该算法的时间复杂度只与n(i的取值范围)有关。 对于for语句内语句较多的情况,本例不适⽤,只适⽤于交换两个变量的值的情况。