How can I create a new number in an Array in a Specific position?-CodePudding

I am trying to save random numbers in an array

I have tried this bot it gives me an error (A constant value is expected Code CS0150)

int x = 0;

Random rnd = new Random();
int[] cards;
while (x != 5)
{
    cards =new int[x] { rnd.Next() };
    Console.WriteLine(cards[x]);
    x  ;
}

CodePudding user response：

Currently you're creating a new array on every iteration. I assume you want cards[x] = rnd.Next() within the loop, and int[] cards = new int[5] directly before the loop:

int x = 0;

Random rnd = new Random();
int[] cards = new int[5];
while (x != 5)
{
    cards[x] = rnd.Next();
    Console.WriteLine(cards[x]);
    x  ;
}

CodePudding user response：

I've made a List instead of an Array so I can use an undefined number of cards `

int x = 0;

Random rnd = new Random();
List<int> cards = new List<int>();
while (x != 5)
{
    cards.Add(rnd.Next()); 
    Console.WriteLine(cards[x]);
    x  ;
}

CodePudding user response：

--- Not for Points ---

If you're going to use a List<>, then use the Count property:

Random rnd = new Random();
List<int> cards = new List<int>();
while (cards.Count < 5)
{
    cards.Add(rnd.Next());
    Console.WriteLine(cards[cards.Count-1]);
}

If you're going to use an Array, then use a for loop and the Length property:

Random rnd = new Random();
int[] cards = new int[5];
for(int x=0; x<cards.Length; x  )
{
    cards[x] = rnd.Next();
    Console.WriteLine(cards[x]);
}