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| Author |
Message |
homfray
Joined: 19 Nov 2003
Posts: 45
Location: Oxford
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| getc |
 Posted: Thu Jun 22, 2006 5:14 am |
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Ok I am having on of those days and this could be the fastest ever answer
| Code: |
while(1)
{
answer=0;
if(kbhit()) //if keyboard is hit
{
c = getc() & 0x5F;
if(c == 'D')
{
printf("\n\rPress 1-6\n\r");
answer=getc();
answer=answer+200;
printf("%u",answer);
}
}
}
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In this short code when I press D and then 1 why does't the answer come out as 201.
What I would like to do is some calculations based on the number typed in
any help would be grand
nice
_________________
Nice!!! |
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rberek
Joined: 10 Jan 2005
Posts: 207
Location: Ottawa, Canada
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| Posted: Thu Jun 22, 2006 6:15 am |
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| Answer will be the ASCII value of 1 , which is 49 decimal. Subtract 48 from answer to get the number you want. |
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Humberto
Joined: 08 Sep 2003
Posts: 1215
Location: Buenos Aires, La Reina del Plata
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| Posted: Thu Jun 22, 2006 6:23 am |
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The problem is that you are adding "apples" + "oranges", then you make a decimal convertion and surelly your result is ´249´
answer=getc();
Here, after you pressed ´1´, answer = 0x31. // ´1´= 0x31 (see ASCII table)
answer=(answer & 0x0F)+200; // ignore the high nibble of ´answer´ to get the ´1´.
printf("%u",answer); // now you will get the expected ´201´
Humberto |
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