Module1_Quiz

Which of the following is a characteristic of static arrays?

• Size can be changed at runtime

• Size must be known at compile time

• Memory is allocated dynamically

• None of the above

How do you initialize an array in C?

• int arr(5) = {1, 2, 3};

• int arr[5] = {1, 2, 3};

• int arr = {1, 2, 3};

• int arr[5];

What will be the output of the following code? int arr[] = {1, 2, 3}; printf("%d", arr[1]);

• 1

• 2

• 3

• Compilation error

What is a pointer in C?

• A variable that holds data values.

• A variable that holds the address of another variable.

• A type of function.

• A type of array.

Which operator is used to access the value at the address stored in a pointer? int* ptr; What operator should be used?

• &

• *

• ->

• []

If you have an integer variable x, how do you assign its address to a pointer p? int x; What should be done?

• &x

• *x

• x

• x&

What will happen if you dereference an uninitialized pointer? int* p; printf("%d", *p); What type of error will occur?

• Syntax error

• Runtime error (undefined behavior)

• Compilation error

• No error; it will print garbage value.

In C, what does this statement do? free(ptr);

• Allocates memory for ptr.

• Deallocates memory pointed to by ptr.

• Initializes ptr to NULL.

• Prints the value stored at ptr.

Which keyword is used to define recursion in functions?

• return

• call

• recursive

• None; recursion is defined by calling the function itself within its body.

What does this function prototype indicate? void func(int*, float);

• func takes two integers as arguments and returns void.

• func takes one integer pointer and one float as arguments and returns void.

• func takes no arguments and returns void only.

• func takes one float argument only and returns void type only.