Question

I like to know how count the received values from. Im using an 4×4 keypad, and AVR studio as compiler

for example if I press button “1” I receive a “1” but if I press button “1” again it should be an “11” and not a “2”,

int inputcounter;
if (button = 00×1)
{ // what should i do instead of
inputcounter++ to get “11” and not “2”
}

Thank you.

Answer 1

Based on the comment instead of inputcounter++, it sounds like you are trying to use a numeric value.

So you need to do:

inputcounter = (inputcounter * 10) + newvalue;