Having problems converting from nested for loop to nested while loop - c++

Question

I'm trying to convert this nested for loop to nested while loop:
The program:
#include<iostream>
using namespace std;
void main()
{
int i,j,n,stars=1;
cout<<"Enter the number of rows:";
cin>>n;
for(i=1;i<=n;i++)
{
for(j=1;j<=stars;j++)
cout<<"*";
cout<<"\n";
stars=stars+1;
}
}
While Trying the nested while loop the loop doesn't stop can someone please give me the solution?
#include<iostream>
using namespace std;
void main()
{
int n,i,j,k,stars=1;
cout<<"Enter the number of rows";
cin>>n;
i=1;
while(i<=n)
{
j=1;
while(j<=stars)
{
cout<<"*";
cout<<"\n";
stars=stars+1;
}
j=j+1;
}
i=i+1;
}

Answer 1

You have to incement your control varibales i ans j inside your loops. You did it outsid the loops directly after. Apart from this the varibale stars was incremented in the outer for loop. In the secend code snippet you did it in the inner while loop. Adapt your code like this:
#include<iostream>
int main()
{
int n;
std::cout<<"Enter the number of rows";
std::cin>>n;
int stars=1;
int i=1;
while ( i<=n ) // corresponds to for(i=1;i<=n;i++) { .... }
{
int j=1;
while ( j<=stars ) // corresponds to for(j=1;j<=stars;j++) cout<<"*";
{
std::cout<<"*";
j++; // increment control variable inside of the loop
}
std::cout<<"\n";
stars++;
i++; // increment control variable inside of the loop
}
return 0;
}
Note if you improve the formatting of the code, you'll find such mistakes easily.