Error when converting graphic LCD routine to CCS C Compiler

[Sobakava]

PIC C Code Conversion

I'm converting a graphic LCD routine to CCS C Compiler:

void LCD_PutPixel(unsigned char x, unsigned char y, unsigned char Set)
{
unsigned int XY;
unsigned char bitByte;

   XY=0x200;
   XY=XY+(y*40);
   XY=XY+(x/6);

   LCD_SendData(XY & 0x00FF);
   LCD_SendData(XY>>8);
   LCD_SendCmd(0x24);      	//pointer set

   bitByte=5-(x % 6);

  Set? bitByte|=0xF8: bitByte|=0xF0;            

   LCD_SendCmd(bitByte);   //0b1111SXXX , s is set/reset, xxx is bit   
   ///number xxx 
   //(Each memorybyte i six graphics bits (pixels))
}


CCS Did not recognized this line:
      Set? bitByte|=0xF8: bitByte|=0xF0; 

is it the same thing with:

   if (Set==0) { bitByte|=0xf8;}
   else
      {bitByte|=0xf0;}

or should it be:
   if (Set==1) { bitByte|=0xf8;}
   else
      {bitByte|=0xf0;}

?

 

[ME]

Re: PIC C Code Conversion

The last of your examples is almost correct, but not completely the same as Set?.

Set? bitByte|=0xF8: bitByte|=0xF0;

is it the same as:

if (Set)
   bitByte|=0xF8;       //If Set is true (not zero), i.e. 1, 2, 3 etc.
else 
   bitByte|=0xF0;       //If Set is false (zero).

You can also write if (Set != 0) it's the same thing as if (Set)

But you should not write if (Set == 1), that's not the same, because the if statement is true for every value different from 0, not only 1, but also 2, 3 etc.

Maybe Set can have the value 2, then the if statment should still be true, like it is when you write Set?