Mastering C: Control Structures and More

What is the purpose of an if statement in C?

• To declare variables in C.

• To create loops in C.

• To define a function in C.

• To execute code conditionally based on a boolean expression.

Explain the difference between a while loop and a for loop.

• A while loop is always faster than a for loop.

• A for loop can only iterate over arrays, while a while loop can iterate over any data type.

• A while loop requires a counter variable, while a for loop does not.

• A while loop checks the condition before each iteration, while a for loop is used for a known number of iterations with initialization, condition, and increment in one line.

How do you declare a function in C?

• return_type function_name(parameter_type1 parameter_name1, parameter_type2 parameter_name2, ...);

• function_name(parameter_type1, parameter_type2);

• return_type function_name(parameter_name1, parameter_name2);

• function_name(parameter_type1 parameter_name1) return_type;

What is the output of the following code: int a = 5; printf('%d', a++);?

• 6

• 5.0

• 4

• 5

Describe how to access elements in an array using pointers.

• Access elements using the array name directly without any pointers.

• Use a pointer to the first element and pointer arithmetic to access other elements.

• Use a loop to iterate through the array without pointers.

• Access elements by their index only without pointers.

What is pointer arithmetic and how is it used in C?

• Pointer arithmetic allows direct manipulation of string literals in C.

• Pointer arithmetic is the ability to perform arithmetic operations on pointers to navigate through memory locations in C.

• Pointer arithmetic is used to perform calculations on integers in C.

• Pointer arithmetic is a method to allocate memory dynamically in C.

How do you pass an array to a function in C?

• Use 'void functionName(dataType array[])' to pass an array.

• Declare the array as 'dataType array[size]' in the function.

• Pass the array by value using 'dataType array' as the parameter.

• Use the syntax 'void functionName(dataType *array, int size)' to pass an array.

What is the significance of the return type in a function declaration?

• The return type is irrelevant to the function's behavior.

• The return type specifies the function's name.

• The return type determines the function's execution time.

• The return type indicates the type of value a function will return, ensuring type safety and clarity.

Explain the use of the break statement in loops.

• The break statement is used to skip the current iteration of a loop.

• The break statement is used to exit a loop prematurely.

• The break statement is used to continue executing the loop indefinitely.

• The break statement is used to pause a loop temporarily.

What is the difference between a static and a dynamic array?

• Static arrays have a fixed size; dynamic arrays can change size during execution.

• Dynamic arrays are always faster than static arrays.

• Static arrays are more memory efficient than dynamic arrays.

• Static arrays can grow in size; dynamic arrays cannot.