C Programming - MCQ Practice Questions

Which keyword is used to pass arguments by reference in C?

Which of the following correctly demonstrates function recursion termination?

What does the const qualifier do when applied to function parameters?

Which statement about extern functions is correct?

What is the primary purpose of function pointers in C?

How are function arguments evaluated in C?

What is the difference between declaring a function and defining a function?

In the context of function pointers, what does the restrict keyword do?

Which of the following is a valid way to return multiple values from a function in C?

What happens if a function is declared but never defined in C?

Consider a function that modifies an array passed as a parameter. Which statement is true?

What is the purpose of function inlining in modern C compilers?

Which of the following about variadic functions is true?

What is a callback function in C?

In C, what is the relationship between array parameters and pointers in functions?

Which of the following demonstrates proper use of the return statement in error handling?

A function in C is declared as: int calculate(int *arr, int size). When this function modifies the array elements, what happens to the original array passed from the calling function?

Consider the function declaration: void func(int x); and later in the code: int result = func(5);. What will be the compilation result?

In a recursive function implementing factorial calculation, the base case is missing. What is the most likely consequence during execution?