C++ Recursive function "asterisks"

[raijin143]

How do I get an output something like this?
Ex.
Input: 5
Output:
* * * * *
* * * *
* * *
* *
*

Here is my code.

</code>

#include <iostream>
using namespace std;

void ASTERISK();

int main()
{

ASTERISK();
return 0;
}

void ASTERISK()
{
int number;
int row, column;

cout << "Enter a number: ";
cin >> number;

row = 1;
while (row<=number)
{
column = 1;
while (column <= number)
{
if (column<=(number-row))
{
cout << " ";
}
else
{
cout << "*";
}
column=column+1;
}
cout <<"\n";
row=row+1;
}
ASTERISK();
}

</code>

[Ganado]

Ask for input in main, then pass the int entered as a parameter to the Asterisk function.

When n is passed into Asterisk(n), Asterisk(n) recursively calls Asterisk(n-1) after drawing a single row of asterisks.

The other important thing in recursion is a base case. In this case, it would be when n == 0, you're done making the triangle.

void Asterisk(int n)
{
    if (n <= 0)
    {
        return; // base case (you don't need two branches, but just for clarity)
    }
    else
    {
        // draw single row
        // ...

        Asterisk(n - 1); // recursively draw the remaining rows.
    }
}

[George P]

The function doesn't need to be recursive, a couple of loops would handle the logic:

#include <iostream>

void Asterisk(int);

int main()
{
   std::cout << "Number of rows: ";
   int num_rows { };
   std::cin >> num_rows;
   std::cout << '\n';

   Asterisk(num_rows);
}

void Asterisk(int num_rows)
{
   for (int row { num_rows }; row > 0; --row)
   {
      for (int itr { }; itr < row; ++itr)
      {
         std::cout << "* ";
      }
      std::cout << '\n';
   }
}

[lastchance]

#include <iostream>
using namespace std;

void line( int n )
{
   cout << ( n ? "* " : "\n" );
   if ( n ) line( n - 1 );
}

void asterisk( int n )
{
   if ( n ) line( n ), asterisk( n - 1 );
}

int main()
{
   int n;
   cout << "Number of rows: ";   cin >> n;
   asterisk( n );
}

[jonnin]

Its probably the assignment point, to do it recursively.
it can probably condense even more than this but..
string s(num_rows, '*');
while(s.length())
{
cout << s << endl;
s.pop_back();
}

[George P]

I don't doubt the assignment is to use recursion, but I was bored and mashed together some simple, crude code to do iteration instead.