Dada una lista de 10 números enteros. Calcular e informar el primer número par, el primer número primo.

#include <stdio.h>
#include <iostream>
#include <math.h>

using namespace std;

//function that: add tewo numbers together
int add(int a, int b)
{
  return a + b;
}

//function that: divide two numbers
float divide(float a, float b)
{
  if(b == 0)
  {
    cout << "divide by zero error" << endl;
    return 0;
  }
  return a/b;
}

//function that: returns the first even number in a list
int firstEvenNumber(int list[], int length)
{
  for(int i = 0; i < length; i++)
  {
    if(list[i] % 2 == 0)
    {
      return list[i];
    }
  }
  return 0;
}

//function that: returns the first prime number in a list
int firstPrimeNumber(int list[], int length)
{
  for(int i = 0;