mult table - recursion implementation

mult.c

#include <stdio.h>

void drawLine(int x, int y)
{
    if(x==0) return;
    drawLine(x-1, y);
    printf("%d\t", x*y);
}
void f(int num)
{
    if(num == 0) return;
    
    int x = 10;
    
    f(num-1);
    drawLine(x, num);
    printf("\n");
}
int main()
{
    f(10);
    return 0;
}