C | Structure & Union | Question 5

#include<stdio.h>  
struct st  
{  
    int x;  
    struct st next;  
};  
    
int main()  
{  
    struct st temp;  
    temp.x = 10;  
    temp.next = temp;  
    printf("%d", temp.next.x);  
    return 0;  
} 

(A) Compiler Error
(B) 10
(C) Runtime Error
(D) Garbage Value

Answer: (A)

Explanation: A structure cannot contain a member of its own type because if this is allowed then it becomes impossible for compiler to know size of such struct. Although a pointer of same type can be a member because pointers of all types are of same size and compiler can calculate size of struct

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