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Thank you for your help.

I ran the button.c code as listed on the board, yet I do not receive any output to screen as suggested. How is the RS232 being used?

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#incl ...

Nevermind!! I ran the code on another computer and it works fine. Strange.

Thanks.

still receive the same error with button function correctly terminated. thanks,

It actually runs without error until the button.c is included (see below)

//=====================================
// The following macro is used by the Button function.
#define read_bit_var(x ...

This code works fine.

#include <16F877.h>
#fuses XT,NOWDT,NOPROTECT,NOLVP
#use delay(clock=4000000)

int option1=0;
int option2=0;

void main()
{

while(1);
}
------------- ...

PCWH Complier

IDE 3.235
PCM 3.236d
PCH 3.236d

I'm a beginner, and I keep getting this error 'A numeric expression must appear here' referring to the int declaration in the following code I found on the board:
------------------------------------ ...