name="google_ads_frame" marginwidth="0" marginheight="0" src="http://pagead2.googlesyndication.com/pagead/ads?client=ca-pub-5572165936844014&dt=1194442938015&lmt=1194190197&format=336x280_as&output=html&correlator=1194442937843&url=file%3A%2F%2F%2FC%3A%2FDocuments%2520and%2520Settings%2Flhh1%2F%E6%A1%8C%E9%9D%A2%2FCLanguage.htm&color_bg=FFFFFF&color_text=000000&color_link=000000&color_url=FFFFFF&color_border=FFFFFF&ad_type=text&ga_vid=583001034.1194442938&ga_sid=1194442938&ga_hid=1942779085&flash=9&u_h=768&u_w=1024&u_ah=740&u_aw=1024&u_cd=32&u_tz=480&u_java=true" frameborder="0" width="336" scrolling="no" height="280" allowtransparency="allowtransparency"> #include <stdio.h>
#include <dos.h>
#include <conio.h>
int alphanum = 0;
int counter = 0;
void interrupt far handler(void)
{
if (++counter == 273) // 15 seconds
{
alphanum = !alphanum; // Toggle
counter = 0;
}
}
void main(void)
{
int i;
void interrupt far (*original_handler)();
original_handler = _dos_getvect(0x1C);
_disable();
_dos_setvect(0x1c, handler);
_enable();
while (! kbhit())
if (alphanum)
for (i = 'A'; i <= 'Z'; i++)
printf("%c/n", i);
else
for (i = 0; i <= 100; i++)
printf("%d/n", i);
_disable();
_dos_setvect(0x1c, original_handler);
_enable();
}