GATE EXAM PREPARATION IN "C" - (GATE CS 2003)

Assume the following C variable declaration

 int *A [10], B[10][10];  

Of the following expressions
I A[2]
II A[2][3]
III B[1]
IV B[2][3]
which will not give compile-time errors if used as left hand sides of assignment statements in a C program
a) I, II, and IV only
b) II, III, and IV only
c) II and IV only
d) IV only

Answer (a)
See below program

int main() {   int *A[10], B[10][10];      int C[] = {12, 11, 13, 14};     /* No problem with below statement as A[2] is a pointer      and we are assigning a value to pointer */   A[2] = C;     /* No problem with below statement also as array style indexing       can be done with pointers*/   A[2][3] = 15;     /* Simple assignment to an element of a 2D array*/   B[2][3]  = 15;     printf("%d %d", A[2][0], A[2][3]);   getchar(); }