How do I write a recursive function in C++ to display a triangle of* like this:

Question

How do I write a recursive function in C++ to display a triangle of* like this:
*
**
***
****

 
I am able to write a recursive function to display an inverted triangle like this:

****
***
**
*

 
The code for the inverted triangle function is:

1. void inverted(int a)
2. {
3. if (a==1)
4. {
5.    cout<<"*"<<endl;
6. }
7. else
8. {
9.    for (int i=0; i<a; i++)
10.    {
11.    cout<<"*";
12.    }
13.    cout<<endl;
14.    inverted(a-1);
15. }
16. }
    

 I am allowed to use a loop (e.g. for loop) to print a row of * but I must use
a recursive function to control the number of rows.

For the uninitiated, a recursive function is a function that calls itself.

Please, provide some insight into the problem.

*
**
***
****
****
***
**
*

1. void inverted(int a)
2. {
3. if (a==1)
4. {
5.    cout<<"*"<<endl;
6. }
7. else
8. {
9.    for (int i=0; i<a; i++)
10.    {
11.    cout<<"*";
12.    }
13.    cout<<endl;
14.    inverted(a-1);
15. }
16. }
    

1. void inverted(int a)
2. {
3. if (a==1)
4. {
5.    cout<<"*"<<endl;
6. }
7. else
8. {
9.    for (int i=0; i<a; i++)
10.    {
11.    cout<<"*";
12.    }
13.    cout<<endl;
14.    inverted(a-1);
15. }
16. }
    

void inverted(int a) { if (a==1) {    cout<<"*"<<endl; } else {    for (int i=0; i<a; i++)    {    cout<<"*";    }    cout<<endl;    inverted(a-1); } }

Explanation / Answer

for(i=1;i

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