compilre does not complain of "," instead of ";"

 compilre does not complain of "," instead of ";"

Hi I have the following code static bit cc_0 = 0;
...... if ((!CC_GDO_0 && cc_0) == 0) return 0;

cc_0 = 0, // here I have a , instead of ;

temp = SpiReadStatus(CCxxx0_MARCSTATE);
.....
I am surprise that the compiler does not generate or warn me of the comma error?

I have version 87.08 of C51.

 RE: compilre does not complain of "," instead of ";"

I am surprise that the compiler does not generate or warn me of the comma error?

The compiler is correct. A comma is a sequential evaluation operator in C, which allows putting several operations in places where only one would be allowed, for example

for(i = 0, j = 0; i < 10; i++)

It is also perfectly valid, though somewhat pointless, to use this operator in normal expressions.

 RE: compilre does not complain of "," instead of ";"

Onless the normal expressions has operations with side effects.

 More on the Comma Operator...

http://www.keil.com/forum/docs/thread6339.asp

http://www.keil.com/forum/docs/thread10451.asp

 I'm well out of date

"I have version 87.08 of C51"

I'd better do an update.

There might be a few differences between this version and the lowly one I'm using ;)

 RE: I'm well out of date

"I have version 87.08 of C51"

Wow! Can I borrow your Time Machine...?