C Programming Quiz (Entry for Data Structures)

In C, you can access out-of-bound elements of an array without any error being reported by the compiler.

• True

• False

Which command initializes the following 2 x 2 identity matrix:

10

01

• double foo[2][2] = {[0][0] = 1.0, [1][1] = 1.0};

• double foo[2][2] = {1.0, 0., 0., 1.0};

• double foo[2][2] = {1.0, 0., 1.0, 0.0};

• double foo[2][2] = {'10','01'};

What must happen before a function can be called?

• It must be declared or defined

• It will automatically be recognized by the compiler

• It does not affect the compilation

• It causes the program to exit

What is the purpose of C functions?

• To reuse, recall, and modularize code

• To create graphical user interfaces

• To manage database connections

• To enhance the speed of the processor

What does the void type indicate in a function definition?

• The function does not return a value

• The function returns an integer

• The function can return any type of value

• The function must take at least one argument

The main function can be omitted in any C program.

• True

• False

What does * do when applied to an address like &i (where i is a variable)?

• It dereferences the address to access the value.

• It converts the address to a hexadecimal format.

• It increases the memory address by one step.

• It checks the validity of the address.

What does &*p in C programming return if p is a pointer?

• The address of the variable that p points to.

• The value pointed by p.

• A new pointer that points to p.

• An error unless p is a pointer array.

If p is a pointer to an integer, what does *p = 10; do?

• Assigns the value 10 to the location p points to.

• Makes p point to the memory address 10.

• Increases the value at p by 10.

• Causes a compilation error unless p is initialized.

You can change the address that a pointer variable holds after it is initialized.

• True

• False