#include "stdio.h"
#include "bios.h"
#include "time.h"
showtime(void);
main()
{
    clrscr()
    printf("The number of hours since midnight is:\n");
    showtime();
    printf("\n\nPress any key to quit:");

}
showtime()
{
    double bios_time;
    while(! kbhit()
{bios_time=biostime(O,OL);
    gotoxy(42,1);
    printf("%.2f",bios_time/CLK_TCK/3600);
}
}                                                                                                                                                               刷新小时钟.cpp
d:\c语言编程\新建文件夹\刷新小时钟.cpp(2) : fatal error C1083: Cannot open include file: 'bios.h': No such file or directory
执行 cl.exe 时出错.

刷新小时钟.exe - 1 error(s), 0 warning(s)         

缺少 "bios.h"库函数吧  这很明显吧 还是你要问什么？

缺少bois.h  网上下载

在哪下载啊？？

狗狗，百度，一搜好多呢