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)
}
//有很多种方法,我这里用的是其中一种:#include
#include
int main(void) {
int minutes
printf("请输入分钟数:\n")
scanf("minutes")
for (minutes >= 0--minutes) {
for (int i = 60i >= 0--i) {
printf("还剩 %d 分钟 %d 秒 结束\n", minutes, i)//输出剩余时间
sleep(1000)//延时函数延时一秒
}
}
printf("计时结束\n")
system("pause")
return 0
}
//我没上编译器测试,但是具体架构就是这样