Question

What is the output of the following program?

$\text{\# include <stdio.h>}\text{void fun(int x)}\left\{\text{if (x > 0)}\right\{\text{fun(x - 1);}\text{printf("\%d," x);}\text{fun(x - 1);}\left\}\right\}\text{int main( )}\left\{\text{fun(3);}\text{return 0;}\right\}$

• A. $1212121$
• B. $121121$
• C. $1214121$
• D. $1213121$

Answer 1

The correct option is D $1213121$

option (a)

$1213121$