Hi to all engineers,

I am reading ADC to compare 10 different values  if they are matched 
then each match
has it's own set value. my question is.

1. what is the different between  if else if  for example

    if (adc_x==1023)        // 5v         1023
            {
            xbyte_lsb=0xff ;
            xbyte_msb=0x01 ;
            }
            else if (adc_x==921)   // 4,5v       921
            {
            xbyte_lsb=0x9A ;
            xbyte_msb=0x01 ;
            }

or  without else if

    if (adc_x==1023)        // 5v         1023
            {
            xbyte_lsb=0xff ;
            xbyte_msb=0x01 ;
            }
            if (adc_x==921)   // 4,5v       921
            {
            xbyte_lsb=0x9A ;
            xbyte_msb=0x01 ;
            }

I do not clearly understand what does "else if"  do?

is there better way of testing ADC ?

Any feedback will appreciate.

Andre
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