How can I print even numbers from an array?

Question

For this
Int arr[2][3] = {{1,2,3},{4,5,6}};
for (int first = 0; first < 2; first++) {
for (int second = 0; second < 3; second++)
cout << x[first][second] << " ";
cout << endl;
}

Answer 1

//here are some small errors :
● in declaration & initialization of array arr , datatype given will be int [not Int]
● in cout , array name is arr [not x]
//for checking even number :
● U can make use of %2==0 (checking remainder left after dividing by 2)

//here is a rough code :

int arr[2][3] = {{1,2,3},{4,5,6}};
for (int first = 0; first < 2; first++) {
for (int second = 0; second < 3; second++)
if(arr[first][second]%2==0)
cout << arr[first][second] << " ";
// cout << endl;
}

Answer 2

Hy again ☺
● your code given in question is correct for that , just remove the small mistakes identified & writted in my previous comment 👍

//here is rough code :

int arr[2][3] = {{1,2,3},{4,5,6}};
for (int first = 0; first < 2; first++) {
for (int second = 0; second < 3; second++)
cout << arr[first][second] << " ";
cout << endl;
}

Answer 3

Thanks sir it's working

Answer 4

So far as I'm seeing this it might be much better to use a 1 dimensional array rather than a 2D one, but if you do need to use that setup then within the inside for loop include an if statement to check whether the modulo of that number with 2 is equal to 0, if that condition is true then output that number, so in practice " if(x[first][second] % 2 == 0) cout << x[first][second] << "\n"; "
I would strongly suggest however that you use a 1D array as it is much easier to iterate through and manage.

Answer 5

I want to display number like that
1 2 3
4 5 6
How can I do?

Answer 6

Hi Saad Mughal
To print number like this:
1 2 3
4 5 6

you have to put a new line in the outer for loop:

int arr[2][3] = {{1,2,3},{4,5,6}};
for (int first = 0; first < 2; first++)
{
for (int second = 0; second < 3; second++)
{
if(arr[first][second]%2 == 0)
cout << arr[first][second] << " ";
}
cout << endl;
}

Answer 7

Saad Mughal You’re welcome! happy coding ☺️

Answer 8

I have an assignment to create 2D array

Answer 9

Sekiro thanks for helping it's working
https://code.sololearn.com/cn7yZusQJd3q/?ref=app