What is a pointer in C?
a) A variable that stores the memory address of another variable
b) A variable that stores a value
c) A data type for storing integers
d) A function that allocates memory
Answer:
a) A variable that stores the memory address of another variable
Explanation:
A pointer in C is a variable that stores the memory address of another variable. Pointers are powerful tools that allow direct manipulation of memory and are essential for dynamic memory allocation, array handling, and function parameter passing. Pointers are declared using the * symbol (e.g., int *ptr). Understanding how to use pointers correctly is critical for advanced C programming, as they enable efficient memory management and complex data structures like linked lists and trees.
Mastering pointers is key to writing efficient and effective C programs, particularly in systems programming and low-level software development.