Point out the error in the program.

int main()
    const int x;
    printf("%d\n", x);
    return 0;
A. Error: unknown data type const int
B. Error: const variable have been initialised when declared.
C. Error: stack overflow in x
D. No error

Answer : Option B

Explanation :

A const variable has to be initialized when it is declared. later assigning the value to the const 

variable will result in an error "Cannot modify the const object".

Hence Option B is correct