C Programming

Question

Which of the following is the correct output for the program given below?

#include<stdio.h>
void fun(int);
int main()
{
    int a;
    a=3;
    fun(a);
    printf("\n");
    return 0;
}
void fun(int n)
{
    if(n>0)
    {
        fun(--n);
        printf("%d",n);
        fun(--n);
    }
}

(a) 0 2 1 0

(b) 1 1 2 0

(c) 0 1 0 2

(d) 0 1 2 0

Answer 1

Ans is D.

Answer 2

Another way to follow each recursive call step by step to know exact function calling

Option d) 0 1 2 0 is the answer