Prior to using a pointer variable it should beQuestion 2Answera. Declaredb.None of thesec. Both declared and initalizedd. Initialized

The correct answer is c. Both declared and initialized.

Here's why:

Step 1: Declaration of a pointer Before you can use a pointer, you must declare it. Declaration of a pointer basically involves telling the compiler where we want to store the address. This is done using the unary operator (*) that comes after a data type.

For example, int *p;

Here, 'p' is a pointer to an integer.

Step 2: Initialization of a pointer After declaration, a pointer should be initialized to any variable or any address. If not done, it points to some random memory location that can cause undefined behavior.

For example, int x = 10; int *p; p = &x;

Here, 'p' is initialized to the address of 'x'. So, it is now pointing to 'x'.

Therefore, before using a pointer variable, it should be both declared and initialized.