C Programming Quiz for Grade 13

Which of the following is the correct syntax to declare a function in C that takes two integers as parameters and returns an integer?

• int function(int a, int b);

• int function(a, b);

• function(int a, int b);

• int function(int, int) = 0;

What is the default return type of a function in C if not specified?

• void

• int

• float

• char

Which keyword is used to return a value from a function in C?

• break

• continue

• return

• exit

What will be the output of the following code? ```c int add(int a, int b) { return a + b; } int main() { printf("%d", add(2, 3)); return 0; } ```

• 23

• 5

• 2

• 3

Which of the following is the correct way to declare a function that does not return any value?

• void function();

• int function();

• function void();

• function();

What is the output of the following code? ```c void printHello() { printf("Hello"); } int main() { printHello(); return 0; } ```

• Hello

• printHello

• 0

• Error

Which of the following statements about function prototypes in C is true?

• Function prototypes are optional in C.

• Function prototypes must be declared before their first use.

• Function prototypes are only required for recursive functions.

• Function prototypes are not allowed in C.

What is the output of the following code? ```c int square(int x) { return x * x; } int main() { printf("%d", square(4)); return 0; } ```

• 8

• 16

• 4

• 2

Which of the following is the correct way to call a function named `foo` with no parameters?

• foo;

• foo[];

• foo();

• foo{};

What is the output of the following code? ```c int multiply(int a, int b) { return a * b; } int main() { int result = multiply(3, 4); printf("%d", result); return 0; } ```

• 7

• 12

• 34

• 1