topic Re: Switch Command in Classic/Legacy CodeWarrior

Switch Command

scotty5555 — Wed, 02 Apr 2008 19:02:24 GMT

Hi,

I am new to embedded software programming and using Codewarrior.I have done some c++ and turbo c programming before.

I am trying to program the mc9s12e128 chip.

The first question i have is regarding the switch statement.See below.

switch(rx_msg[0])
{
case ('h'):sendmessage(tx_msg_1):break;
case ('s'):sendmessage(tx_msg_2):break;
default:sendmessage(tx_msg_3);
}

Is this the correct syntax for the switch statement which does complie ?

Normally if using C builder for a console program i would use: case 'h':sendmessage( ):break;

But this format does not compile thats why i added the brackets : case ('h'):.... and it now it compiles.

Also is the correct include file for the switch statement : #include <stdlib.h> ?

Where would i find information regarding which include file is needed for certain commands ?

Can anyone help ?

Thanks,

Scotty5555

J2MEJediMaster — Wed, 02 Apr 2008 20:36:11 GMT

Try:

Code:

switch(rx_msg[0]){ case 'h':   sendmessage(tx_msg_1); break; case 's':   sendmessage(tx_msg_2); break; default:   sendmessage(tx_msg_3); break;}

Note that you only use the colon to flag the end of the case statement.

Message Edited by J2MEJediMaster on 2008-04-02 09:37 AM

scotty5555 — Wed, 02 Apr 2008 21:18:37 GMT

Sorry the colon mistake was when i typed it out...Below is what i had and compiles.

switch(rx_msg[0])
{
case ('h'):sendmessage(tx_msg_1);break;
case ('s'):sendmessage(tx_msg_2);break;
default:sendmessage(tx_msg_3);
}

I will try what you suggest and see what happens.

Thanks,

Scotty5555