What is the output of the following two C programs, and which one is tail-recursive and which one is non-tail recursive and explain me everything

code:::::::::::1

#include  void fun(int n) 

{ if (n > 0)

 { printf("%d", n); 

fun(n-1); }

}

int main ()

{ fun(3);

return 0;

}

code::::::::::::::::::::2

#include  void fun(int n) 

{ if (n > 0)

{ fun(n-1);

 printf("%d", n); 

} }

int main ()

{ fun(3);

return 0; }