How can the following function prints all the given numbers vertically? Based on

Question

How can the following function prints all the given numbers vertically?

Based on my tracing of function it can only prints first digit and the last digit using recursion.

#include <iostream>

using namespace std;

void recursive_write_vertical(unsigned int number)
// Postcondition: The digits of number have been written, stacked vertically.
{
if (number < 10) // stopping case
cout << number << endl; // Write the one digit
else // including recursive calls
{
cout << "Before: " << number << endl;
recursive_write_vertical(number/10);// Write all but the last digit
cout << "After: "<< number << endl;
cout << number % 10 << endl; // Write the last digit
}
}

int main()
{
recursive_write_vertical(1234);
return 0;
}

Explanation / Answer

#include <iostream>

using namespace std;

void recursive_write_vertical(unsigned int number)

// Postcondition: The digits of number have been written, stacked vertically.

{

if(number>0)

{

recursive_write_vertical(number/10);

cout << number%10 << endl;

}

}

int main()

{

recursive_write_vertical(1234);

return 0;

}

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