C Programming

What are command line arguments in C? a) Inputs passed to a program when it is executed b) Variables defined inside the main() function c) Memory addresses of functions d) Pointers to global variables Answer: a) Inputs passed to a program when it is executed Explanation: Command line arguments in C are inputs passed to […]

What is a macro in C? a) A preprocessor directive that defines a piece of code that can be reused b) A variable that stores a floating-point value c) A function that returns a pointer d) A memory location Answer: a) A preprocessor directive that defines a piece of code that can be reused Explanation:

What is the role of the C preprocessor? a) To process directives before compilation b) To manage memory allocation c) To handle input and output d) To execute the main function Answer: a) To process directives before compilation Explanation: The C preprocessor is a tool that processes preprocessor directives before the actual compilation of the

What is the purpose of file handling in C? a) To read from and write to files stored on a disk b) To store variables in memory c) To dynamically allocate memory d) To manage pointers Answer: a) To read from and write to files stored on a disk Explanation: File handling in C refers

What is an enum in C? a) A user-defined data type consisting of named integer constants b) A built-in data type for storing floating-point numbers c) A function that returns multiple values d) A variable that stores a string Answer: a) A user-defined data type consisting of named integer constants Explanation: An enum (enumeration) in

What is a union in C? a) A data type that can store different types of data in the same memory location b) A data type that stores only one type of data c) A function that returns multiple values d) A loop that iterates a fixed number of times Answer: a) A data type

What is a structure in C? a) A user-defined data type that groups related variables of different types b) A built-in data type for storing integers c) A function that returns multiple values d) A variable that stores a string Answer: a) A user-defined data type that groups related variables of different types Explanation: A

How is memory deallocated in C? a) Using the free() function b) Using the malloc() function c) Automatically when a variable goes out of scope d) Using the return statement Answer: a) Using the free() function Explanation: In C, memory that has been dynamically allocated using malloc(), calloc(), or realloc() must be explicitly deallocated using

What is the purpose of the malloc() function in C? a) It dynamically allocates memory b) It deallocates memory c) It initializes a variable d) It returns a value from a function Answer: a) It dynamically allocates memory Explanation: The malloc() function in C is used to dynamically allocate memory during the runtime of a

What is the difference between a pointer and an array in C? a) A pointer stores an address, an array stores multiple values b) A pointer stores multiple values, an array stores an address c) Both are the same in functionality d) A pointer and an array cannot be used together Answer: a) A pointer

What does the & operator do in C when used with a variable? a) It returns the address of the variable b) It multiplies the variable by a constant c) It adds two variables d) It divides the variable by a constant Answer: a) It returns the address of the variable Explanation: The & operator

What is a pointer in C? a) A variable that stores the address of another variable b) A variable that stores a constant value c) A variable that stores multiple values d) A variable that stores a string Answer: a) A variable that stores the address of another variable Explanation: A pointer in C is

How are multidimensional arrays defined in C? a) As arrays of arrays b) As arrays of functions c) As arrays with variable sizes d) As arrays with no elements Answer: a) As arrays of arrays Explanation: Multidimensional arrays in C are defined as arrays of arrays. For example, a two-dimensional array can be thought of

What is a string in C? a) An array of characters terminated by a null character b) A collection of integer values c) A pointer to an integer d) A function that returns a character Answer: a) An array of characters terminated by a null character Explanation: A string in C is an array of

What is an array in C? a) A collection of elements of the same data type b) A single variable that stores multiple data types c) A function that returns multiple values d) A loop that iterates a fixed number of times Answer: a) A collection of elements of the same data type Explanation: An

What is recursion in C? a) A function calling itself b) A loop inside a function c) A function returning multiple values d) A function with multiple arguments Answer: a) A function calling itself Explanation: Recursion in C refers to the technique of a function calling itself to solve a smaller instance of the same

What is a function in C? a) A block of code that performs a specific task b) A variable that stores data c) A loop that iterates a fixed number of times d) A memory location Answer: a) A block of code that performs a specific task Explanation: A function in C is a block

What is the purpose of the default case in a switch statement? a) To handle cases not matched by any other case b) To terminate the loop c) To allocate memory dynamically d) To return a value from a function Answer: a) To handle cases not matched by any other case Explanation: The default case

How does a switch statement work in C? a) It allows multi-way branching based on the value of an expression b) It iterates over a block of code a specified number of times c) It checks a condition at the end of the loop d) It only iterates once Answer: a) It allows multi-way branching

What is the difference between while and do-while loops in C? a) do-while executes the loop body at least once, while may not b) while executes the loop body at least once, do-while may not c) Both execute the loop body the same way d) while is used for infinite loops, do-while is not Answer:

What does the for loop do in C? a) It iterates over a block of code a specified number of times b) It checks a condition at the end of the loop c) It initializes variables but does not loop d) It only iterates once Answer: a) It iterates over a block of code a

What is the function of the goto statement in C? a) It jumps to a labeled statement within the same function b) It exits a loop c) It returns a value from a function d) It allocates memory dynamically Answer: a) It jumps to a labeled statement within the same function Explanation: The goto statement

How does the continue statement function in C? a) It skips the remaining code in the loop and moves to the next iteration b) It exits the loop completely c) It returns a value from a function d) It allocates memory Answer: a) It skips the remaining code in the loop and moves to the

What is the purpose of the break statement in C? a) To exit a loop or switch statement b) To pause the execution of a loop c) To return a value from a function d) To allocate memory dynamically Answer: a) To exit a loop or switch statement Explanation: The break statement in C is

What is the role of the return statement in C? a) It terminates a function and optionally returns a value b) It prints a value to the console c) It allocates memory d) It declares a global variable Answer: a) It terminates a function and optionally returns a value Explanation: The return statement in C