Nested While Loop (help)..

I don't normally do people's homework, but you've given it a shot, most people just ask us to do it. You've made two mistakes:
 
1 - you emit a newline after every *, you need to emit a newline after each group of *s
2 - you don't reset colum to 0, so your rows never get any bigger.
 
I recommend learning to use your debugger, that should have helped you find both of these issues. I don't know what compiler you're using, but they all suppor breakpoints AFAIK.
 

#include <iostream>
 
using namespace std;
 
int main()
{
    int n = 5;
    int row = 0;
    int colum = 0;
    while(row<n)>
    {
        
        while(colum<row)>
        {
            cout << "*";
            colum++;
        }
 
		cout << "\n";
		colum = 0;
        row++;
    }
    return 0;
}</iostream>