How write a recursive print program

Question

Gurus,

I want to know how to write a recursive function that prints

1
12
123
1234
...
......

For eg: display(4) should print

Answer 1

We keep calling PrintIt() with the argument-1 recursively until x < 1. Each call will then return in reverse order when x < 1. At each return we print a line starting at 1 to x.

#include "stdio.h"

void PrintIt( int x )
{
    int i;
    if( x > 1 )
    {
        PrintIt( x - 1 );
        printf("\n");
    }

    for( i = 1; i < x+1; i++)
    {
        printf("%d", i);
    }

    return;
}

int main(int argc, char *argv[])
{
    PrintIt( 4 );
    return 0;
}