What is the base data type of a pointer variable by which the memory would be allocated to it?a.intb.floatc.No datatyped.unsigned int

To understand the base data type of a pointer variable and memory allocation, we need to consider how pointers work in programming.

Pointers are variables that store the address of another variable. They can point to any data type, but the type of data they point to influences how the memory for the pointer variable itself is represented. In C and C++, a specific pointer type holds the address of a variable of a corresponding base type.

Here’s an overview:

1. Understanding Pointers: A pointer variable can point to any base data type like int, float, etc. The choice of base type determines how the system treats the data at the memory address.

2. Base Type of Pointer: The base type of a pointer variable defines the type of data stored at the address it points to. For instance, an int* points to an integer, and a float* points to a floating-point number.

3. Memory Allocation: Memory allocation for pointer variables depends on the specific type of pointer. For example, an int* would typically require 4 bytes (on a 32-bit system), while a float* would also typically require 4 bytes as well.

In this case, the answer to the question regarding the base data type of a pointer variable is that there is indeed a specific type associated with it. Therefore, the correct answer based on the provided options is:

Final Answer

a. int (since an int pointer is a common example).