using namespace std;

int main()

    cout << "Unique numbers:";
    for (int x = 1; x < 10; x++){
        cout << 1 + ( rand () % 20) <<endl;
    return 0;

Guys this is my program. Can i ask if how can i vertical the output? what will i used? thanks

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What do you mean by "vertical the output"?

please rephrase your question or what you need be done.

i mean the output should be vertical direction

i mean the output should be vertical direction

Which means what, exactly? Show us an example, because right now each number is output on a separate line, and that looks a lot like 'vertical' to me.

The line cout << 1 + ( rand () % 20) <<endl; will give an output like :


which is already vertical. If you by chance want the output to be in a single line, replace this line with cout << 1 + ( rand () % 20) <<" ";

This will give you an output like :

<random_number_1> <random_number_2> <random_number_3> . . .
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