How to convert int to string on Arduino?

Question

How do I convert an int, n, to a string so that when I send it over the serial, it is sent as a string?

This is what I have so far:

int ledP         


        

Answer 1

The solution is much too big. Try this simple one. Please provide a 7+ character buffer, no check made.

char *i2str(int i, char *buf){
  byte l=0;
  if(i<0) buf[l++]='-';
  boolean leadingZ=true;
  for(int div=10000, mod=0; div>0; div/=10){
    mod=i%div;
    i/=div;
    if(!leadingZ || i!=0){
       leadingZ=false;
       buf[l++]=i+'0';
    }
    i=mod;
  }
  buf[l]=0;
  return buf;
}

Can be easily modified to give back end of buffer, if you discard index 'l' and increment the buffer directly.