Searching a one-dimensional array for a particular value

Question

I'm a student and new to c#, I have tried to search an element and print index of the element, but I don't know why it's doesn't work.

this is my code

string temp = " ";
int hold;
const int SIZE = 5;
int[] a = new int[SIZE];
bool found = false;
int num;
//reading num from user
for (int i = 0; i < SIZE; i++)
{
    a[i] = int.Parse(Interaction.InputBox("Enter the array values: "));
}

// print values
for (int i = 0; i < SIZE; i++)
{
    temp = temp + a[i] + " ";
}
temp = temp + "\n";
MessageBox.Show("array values: \n" + temp);

// this part I want it
num = int.Parse(Interaction.InputBox("Enter the value to found "));

for (int j = 0; j < SIZE; j++)
{
    if (a[j] == num)
    {
        MessageBox.Show("Searched value found in array");
    }
}
MessageBox.Show("Searched value not found in array");

and thank you

Answer 1

Consider:

    bool isFound = false;
    for (int j = 0; j < a.Length; j++)
    {
        if (a[j] == num)
        {
            isFound = true;
        }
    }

    if(isFound) 
    {

    }
    else
    {

    }

Just finish it off..

Then consider how to stop the loop when you found what you want (efficiency: don't keep searching for something you already found)