Question

C++

9) Write a recursive function printAll that takes an int num argument and prints all the numbers in the range [num, 0]. The function returns nothing. e.g. printAll(5) prints 5, 4, 3, 2, 1, 0. Call your function in the main

Answer 1

Here is function:

void printAll(int num)
{
   // recursive calls until num reaches to 0
   if(num == 0)
   {
       // print 0 data with dot
       cout << num << "."<< endl;
       return; // return to break the recursive funtion
   }
   else
   {
       // print num with ,
       cout << num << ", ";
   }
   printAll(num - 1);
}

Here is complete code calling from main:

#include <iostream>
using namespace std;
void printAll(int num)
{
   // recursive calls until num reaches to 0
   if(num == 0)
   {
       // print 0 data with dot
       cout << num << "."<< endl;
       return; // return to break the recursive funtion
   }
   else
   {
       // print num with ,
       cout << num << ", ";
   }
   printAll(num - 1);
}
int main ()
{
   printAll(5);
   return 0;
}

Output:

In case if you want different output comment me.