Using Char Array with pinMode [SOLVED]

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4

#define names are visible to the compiler at compile-time, but don't exist at
runtime. And names are not the same thing as strings (which are runtime
objects).

You need an array of int or byte:

#define RELAY1  4                        
#define RELAY2  5                        
#define RELAY3  6                        
#define RELAY4  7
#define RELAY5  8                        
#define RELAY6  9                        
#define RELAY7  10                        
#define RELAY8  11

byte relays[] = {RELAY1, RELAY2, RELAY3, RELAY4, RELAY5, RELAY6, RELAY7, RELAY8};

void setup ()
{
  for (int i=0; i = 7; i++){
    pinMode (relays[i], OUTPUT);
    digitalWrite (relays[i], LOW); 
  }
  ..
}

Whitespace serves only to separate names, it is ignored:

const char *relays[]

parses the same as

const char* relays[]