blank output screen !!

the following code does not print anything . why?

Code:

---

#include<iostream.h>
#include<conio.h>
void fn(int);

int main() {
fn(10);
getch();
return(0);
}

void fn(int n)
      {
        static int i;
        for(i=0;i<=n;i++)
        fn(n-i);
        cout<<"anything\n" ;
      }

---

well......first off ..... you keep calling fn() where n = 10....... n-i when i = 0 == n-0

that should eventually segfault if i'm thinking correctly.....

A recursive function needs some kind of test which if true returns from the function instead of calling the function again. The first time through your for loop n=10 and i=0, so n-i=10. Then, you call your function again with 10 as the argument. So, your program takes a break from executing the first function call, and exectutes the second function call. For your second function call, n=10 and i=0, so n-i=10, and you call your function again with 10 as the argument. So, your program takes a break from executing the 2nd function call and executes your 3rd function call...and so on and so on in an infinite cycle of function calls.

but i have declared i as static shd'nt it retain its value, or how to correct it.

but everytime you call the function you destroy i's value by doing the i=0 in the for loop.