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Meaning of operator %=

vb dev

Hello everybody,

I have seen the operator %= used in a code meant for Keil C. Can somebody explain me its purpose? Thanks.

www.8051projects.net/.../forum_viewtopic.php

char getchar()
   {
   volatile char c;

   while(RxInChar == RxOutChar);
   ES = 0;                         /* Disable Interrupts */
   c = RxBuffer[ RxOutChar++ ];
   RxOutChar %= BUF_SIZE;
   ES = 1;                         /* Enable Interrupts */

   return( c );
   }

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  • 0 in reply to vb dev

    I am new to C
    C51 is just about the lousiest platform there is to learn C on.

    Get a "teach yourself C" book (I recommend Kochan: "programming in ANSI C") and a (free) PC C compiler and start learning.

    Make sure you get a C book, not a C++ book if you want to move forward with the '51

    Erik

Reply
  • 0 in reply to vb dev

    I am new to C
    C51 is just about the lousiest platform there is to learn C on.

    Get a "teach yourself C" book (I recommend Kochan: "programming in ANSI C") and a (free) PC C compiler and start learning.

    Make sure you get a C book, not a C++ book if you want to move forward with the '51

    Erik

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