paper rock... array

I made a Rock paper .... it works just fine but I want to see the computers choice.

I added an array but I dont know how to continue.
uint8_t computer[4] = { paper, rock, scissors, lizard, Spock};

char command[0x20];
void setup()
{
  Serial.begin(115200);
  pinMode(PIN_LED1, OUTPUT);
}
void loop()
{
  if (receive_function(command, sizeof(command)))
  {
    uint8_t r = random(0, 5); // 0=rock, 1=paper 2=scissors 3=Lizard 4=Spock
    uint8_t computer[4] = { paper, rock, scissors, lizard, Spock};
    Serial.println("computer[4]"); //rock, paper, scissors. lizard,Spock
    if (strcmp(command, "rock") == 0) //
    {
      if (r == 0) {
        Serial.println("tie"); // if they match print out reply
      }
      else if (r == 1) {
        Serial.println("you lose!"); // if they match print out reply
      }
      else if (r == 2) {
        Serial.println("you win!"); // if they match print out reply
      }
      else if (r == 3) {
        Serial.println("you win!"); // if they match print out reply
      }
      else if (r == 4) {
        Serial.println("you lose!"); // if they match print out reply
      }
    }
    if (strcmp(command, "paper") == 0) //
    {
      if (r == 0) {
        Serial.println("you win!"); // if they match print out reply
      }
      else if (r == 1) {
        Serial.println("tie"); // if they match print out reply
      }
      else if (r == 2) {
        Serial.println("you lose"); // if they match print out reply
      }
      else if (r == 3) {
        Serial.println("you lose!"); // if they match print out reply
      }
      else if (r == 4) {
        Serial.println("you win!"); // if they match print out reply
      }
    }
    if (strcmp(command, "scissors") == 0) //
    {
      if (r == 0) {
        Serial.println("you lose"); // if they match print out reply
      }
      else if (r == 1) {
        Serial.println("you win!"); // if they match print out reply
      }
      else if (r == 2) {
        Serial.println("tie"); // if they match print out reply
      }
      else if (r == 3) {
        Serial.println("you win!"); // if they match print out reply
      }
      else if (r == 4) {
        Serial.println("you lose!"); // if they match print out reply
      }
    }
    if (strcmp(command, "lizard") == 0) //
    {
      if (r == 0) {
        Serial.println("you lose"); // if they match print out reply
      }
      else if (r == 1) {
        Serial.println("you win!"); // if they match print out reply
      }
      else if (r == 2) {
        Serial.println("you lose"); // if they match print out reply
      }
      else if (r == 3) {
        Serial.println("tie!"); // if they match print out reply
      }
      else if (r == 4) {
        Serial.println("you win!"); // if they match print out reply
      }
    }
    if (strcmp(command, "Spock") == 0) //
    {
      if (r == 0) {
        Serial.println("you win"); // if they match print out reply
      }
      else if (r == 1) {
        Serial.println("you lose!"); // if they match print out reply
      }
      else if (r == 2) {
        Serial.println("you win"); // if they match print out reply
      }
      else if (r == 3) {
        Serial.println("you lose!"); // if they match print out reply
      }
      else if (r == 4) {
        Serial.println("tie"); // if they match print out reply
      }
    }
    else if (strcmp(command, "on") == 0) // compare to "on"
    {
      digitalWrite(PIN_LED1, HIGH); // if they match turn the led on
    }
    else if (strcmp(command, "off") == 0) // compare to "off"
    {
      digitalWrite(PIN_LED1, LOW); // if they match turn the led off
    }
    else // none of the ifs above were true
    {
      Serial.println("Rock, Paper, Scissors, Lizard, Spock");
    }
  }
}

uint8_t computer[4] = { paper, rock, scissors, lizard, Spock}; Five into four doesn't go.

Your code is incomplete.
But you already knew that.