First attempt at using an array with a for loop, not going as planned

my intention in code below have loop through array of int values represent minutes in fan should on. if finds value matches now.minute, if turns fan on, else, fan turned off. however, getting relay fan flicking on , off rapidly. not sure have gone wrong?

i feel there should way loop exit loop if fan meant on.

any hints on try appreciated.

code: [select]

  //fan timer control

  if (light1state_on || light2state_on) { // if lights on
   
    (int = 0; < (sizeof(fantimeon_minute) / sizeof(int)) - 1; i++) { // check see if fan should on checking minute array
      if (now.minute() == fantimeon_minute[i]) {
        digitalwrite(fanpin, relay_on);
        fanstate_on = 1;
        serial.println("fan on, fanpin = low, fanstate_on = 1");       
      } else {
        digitalwrite(fanpin, relay_off);
        fanstate_on = 0;
        serial.println("fan off, fanpin = high, fanstate_on = 0");
      }
    }
  }

code: [select]

i < (sizeof(fantimeon_minute) / sizeof(int)) - 1
why "- 1" ?

please post code.

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