ISO C++ error....

when try compile code error:

in function 'void loop()':
error: iso c++ forbids comparison between pointer , integer

how fix it?
this code:

quote

/* danga signals mk1
made on boarduino v2.0
will adapted use on custom board
see jpegs
layout follows: */

int redpin = 9;
int redon;
int orangepin = 10;
int orangeon;
int greenpin = 11;
int greenon;
int switchpin = 12;
int laston = 0;
int laston2 = 0;

void setup(){
 pinmode(redpin, output);
 pinmode(orangepin, output);
 pinmode(greenpin, output);
 pinmode(switchpin, input);
 redon = 1;
 digitalwrite(redpin, high);
 laston = 0;
}

void loop(){
 if (switchpin == high){
  if (laston == "0"){
   digitalwrite(redpin, low);
   digitalwrite(orangepin, high);
   laston = laston2;
   //offyet();
  }
  else{
   digitalwrite(greenpinpin, low);
   digitalwrite(orangepin, high);
   laston = laston2;
   offyet();
  }
 }
 
}

void offyet(){
 if (switchpin == low){
   if (laston == ""0""){
    digitalwrite(orangepin, low);
    digitalwrite(greenpin, high);
    //loop();
   }
   else{
     digitalwrite(orangepin, low);
    digitalwrite(redpin, high);
   }
 }
 else{
  offyet();
 }
}

in couple of places have this:

code: [select]

if (laston == "0"){
when should have (without quotes):

code: [select]

if (laston == 0){


i suspect have other problems (for instance laston2 never updated after it's declared) bet quotes thing what's stopping code compiling.

andrew

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