What is the output of the following code?

int main()

{

int x = 10, y = 5;

printf("%d", x + y * 2);

return 0;

}

• 30

• 20

• 25

• 15

What is the difference between ++i and i++ in C?

• Both increment the value by 1 but ++i increments before the value is used, and i++ increments after.

  
  

• Both increment the value by 1, but ++i increments after the value is used, and i++ increments before.

  
  

• ++i increases by 2, and i++ increases by 1.

  
  

• There is no difference.

What will be the value of i after the following loop?

int i;

for(i = 0; i < 10; i++) {

if (i == 5) {

break;

} }

• 4

• 5

• 10

• 9

What does the static keyword do in C?

•  It makes a variable visible throughout the program.

  
  

•  It makes a function visible only within its file.

  
  

• It ensures that a variable retains its value between function calls.

  
  

• It makes a variable constant.

  
  

Who is known as the father of the computer?

• Alan Turing

• Charles Babbage

• John Von Neumann

• Bill Gates

Who invented the concept of the first programmable computer?

• John Atanasoff

• Charles Babbage

• Alan Turing

• Konrad Zuse

Who is known for developing the first successful theory of artificial intelligence(AI)?

• Alan Turing

• John McCarthy

• Marvin Minsky

• Claude Shannon

What is the difference between malloc and calloc in C?

• malloc initializes memory, but calloc does not.

• calloc allocates memory for a single object, but malloc allocates for multiple objects.

• malloc initializes memory with 0, but calloc does not.

• malloc allocates memory, but calloc allocates and initializes memory to 0.

 What will be the output of this code?

int x = 5;

printf("%d %d %d", x++, ++x, x++);

• 5 7 6

• 6 7 6

• 5 6 6

• 5 7 7

What are function pointers in C, and how are they used?

• Function pointers store the address of a function, which can be invoked later.

• Function pointers are used to declare multiple functions at once.

• Function pointers store the return value of functions.

• Function pointers are used for defining arrays of functions.