problem with the code (compiler problem???)

[tmach]

Hello All,
I am using PCM C compiler (Ver 3.178) and PIC16F877 MCU. Attached is the portion of the code I have problem with.

*******************************************
value = input_c(); ---------(1)

temp = ((value * 10) + 900)/10; ---------(2)

B = (int) (temp / 8); ---------(3)

A = temp - (B * 8); ---------(4)

********************************************
In my program value varies from 0 to 50. If value <=25, I read correct values of A and B. If value > 25, I see that A and B are calculated taking value = 0 and incrementing. I mean, if value = 26, i get A = 2, B = 11. This is the same value I get if value = 0, if value = 27, i get A = 3, B = 11. This is the same value I get if value = 1.
I see that this problem might be because, if value>25 then (value*10) in statement (2) is greater than 255 and the compiler might be wrapping it to 0, which it shouldn't do.
Please advise on this.

Regards.
tmach

[tmach]

I just forgot to mention the data types I am using.
Value, A is int8
temp and B are int 16

thanks
tmach

[Darren Rook]

You need to typecast. If you mix 8 and 16 bit math in one operation it will use 8bit routines to save ROM, so you need to specifically tell it 16bit.

[Mark]