array[6] << by x bits

void shiftArrayLeft(int * array, int size, int shiftBy){
  int i;
  int temp;
  for(i = 0; i < shiftBy; i++){
    temp = array[0];
    array[0] = array[1];
    array[1] = array[2];
    array[2] = array[3];
    array[3] = array[4];
    array[4] = array[5];
    array[5] = temp;
  }
}