prf2

Front

What is a pointer in C programming?

Back

A variable that stores the address of another variable or the address of dynamically allocated memory.

Front

What does the statement rewind(fp) do?

Back

It brings the pointer fp back to the beginning of the file.

Front

What is the function of 'flush(stdin);' command?

Back

It removes characters that remain in the keyboard buffer.

Front

What does the ^ operator do in C programming?

Back

It performs a bitwise XOR operation on two bit sequences.

Front

What is incorrect about pointers?

Back

Pointers are not containers for storing data values like numbers and characters.

Front

What is the purpose of a pointer?

Back

To provide an indirect method of accessing the value of a data item.

Front

Can pointers point to data aggregates?

Back

Yes, pointers can point to variables of fundamental data types and data aggregates like arrays or structures.

Front

What is the difference between a pointer and a regular variable?

Back

A pointer holds a memory address, while a regular variable holds a data value.

Front

What happens if you dereference a null pointer?

Back

It leads to undefined behavior, often resulting in a program crash.

Front

How do you declare a pointer in C?

Back

By using the asterisk (*) symbol, e.g., int *ptr;