C Programming Fundamentals

What is the correct syntax to include a header file in C?

• #include

• #include {header_file.h}

• import header_file.h

Explain the purpose of the main() function in a C program.

• The main() function is used for defining global variables.

• The main() function is where all the functions are declared.

• The main() function handles memory allocation in a C program.

• The main() function is the entry point of a C program.

What is the difference between a variable and a constant in C?

• A variable can change its value, while a constant cannot.

• A variable is used for functions, while a constant is used for loops.

• Both variables and constants can change their values.

• A variable is a fixed value, while a constant can change.

How do you declare an integer variable in C?

• integer myVariable;

• var myVariable;

• float myVariable;

• int myVariable;

What is a function prototype in C?

• A function prototype is the actual implementation of a function.

• A function prototype is a type of variable used in C programming.

• A function prototype is a declaration of a function that specifies its name, return type, and parameters.

• A function prototype is a comment describing a function's purpose.

How do you define a function in C?

• function_name(parameter_name) return_type { // function body }

• return_type function_name(parameter_type parameter_name) { // function body }

• function_name(parameter_type) { // function body }

• return_type function_name { // function body }

What is the return type of a function that does not return a value?

• float

• string

• void

• int

Explain the concept of recursion in C functions.

• Recursion is when a function runs in parallel with another function.

• Recursion is a programming technique where a function calls itself to solve smaller instances of the same problem, requiring a base case to stop the recursion.

• Recursion is a technique where a function calls another function to perform tasks.

• Recursion is a method of optimizing code by removing loops.

What is an array in C?

• An array in C is a collection of different types stored randomly in memory.

• An array in C is a single element of any type.

• An array in C is a collection of elements of the same type stored in contiguous memory locations.

• An array in C is a function that returns multiple values.

How do you access the elements of an array in C?

• Use the array subscript operator [] with the index of the element.

• Use the parentheses () to index the array.

• Use the dot operator . to access elements.

• Access elements using the array name only.