Recursive Function Trouble

[juanc]

i have to do a program that read a number and say if it is a power of 3, using recursivity function.
i already did but something is not right, please help
thanks


[CODE=cpp]# include <iostream.h>
# include <conio.h>

bool powerof3 (int n)
{
if((n%3)==0)
{
n=n/3;
powerof3(n);
}
else
{
if (n==1)
{
return true;
}
else
{
return false;
}
}
}
main()
{
int n;
bool a;
cout<<"escriba un numero"<<endl;
cin>>n;
a=powerof3(n);
if (a==true)
{
cout<<"el numero "<<n<<" es una potencia de 3"<<endl;
}
if (a==false)
{
cout<<"el numero "<<n<<" no es una potencia de 3"<<endl;

}
getch();
}[/CODE]

[Ganon11]

A few things:

1) Please use the [CODE] tags available in the text editor box when including code in your post. Just highlight the code and press the # symbol above your text. These tags make the code much easier to read.

2) Please use a clearer title to your post. When many experts see a thread with an unclear title, they may skip over it, not knowing if they'll be able to help or not. Using a clear thread title will give experts a better idea of whether or not they can help you. In general, stray away from titles such as "Help me," and try to use titles that indicate the nature of your trouble.

3) Please post in the proper section. I have moved this thread from the Miscellaneous Questions forum to the C++/C forum.

[gsi]

Hi,
It should be return(powerof3 (n)); in line 9. A function returning bool returns false by default, if return value is not specified (May be implementation defined).
Thanks,
gsi.

[juanc]

thanks its working now