#include
#include
#include
void sleep( long wait );
void main( void )
{
int flag=1;
char time[128];
_strtime(time);
printf( "OS time:%s\n",time);
printf( "Delay for three seconds\n" );
do
{
sleep( 3 * 1000 );
printf( "Hello!\n" );
}while(flag);
}
void sleep( long wait )
{
long goal;
goal = wait + clock();
while( goal > clock() );
}
异步IO