int main(){ time_t start, end
int i
start = time(NULL)
end = time(NULL)
printf("please input:")
for(i = 0i <3i++){
while(end - start <i){
end = time(NULL)
}
cystem("cls")
printf("%d", i)
}
return 0
}
1、C语言中实现精确计时，参考代码如下：ANSIC: ftime()
struct timeb {
time_t time
unsigned short millitm
short timezone
short dstflag
}
2、另外，还有就是更精确定计时，需要CPU的支持，具体情况，可以参考MSDN。
LARGE_INTEGER frequency = {0}
LARGE_INTEGER now = {0}
LARGE_INTEGER end = {0}
QueryPerformanceFrequency(&frequency)；
while (QueryPerformanceCounter(&now) &&((now.QuadPart - end.QuadPart) <0))
{
Sleep(0)
}
