dictionary.c

typedef struct {
  const char* key;
  int value[100];
} key_value_pair;

const auto empty = new key_value_pair();

key_value_pair images[] {
  {"snowman", {1, 2, 3, 4, 5} },
  {"pig", {5, 2, 4, 5, 6} }
};

key_value_pair* value_for(const char* key) {
  for (auto i = 0; i < sizeof images; i++){
    if (images[i].key != key) { continue; }
    return &images[i];    
  }
  return empty;
}

void print_bytes() {
  auto kvp = value_for("pig");
  for (auto i = 0; i < 100; i++) {
    Serial.print(kvp->value[i]);
  }
}

For Arduino