C Programming - MCQ Practice Questions

How can you modify a variable inside a function and reflect the change in the calling function?

What is the output of this code? int* getPointer(int *p) { return p; } int main() { int a = 10; int *ptr = getPointer(&a); printf("%d", *ptr); }

What are static local variables in functions used for?

What will be the output? int counter() { static int count = 0; return ++count; } int main() { printf("%d ", counter()); printf("%d ", counter()); printf("%d", counter()); }

Which of the following is TRUE about inline functions in C99 standard?

What is function overloading in the context of C?

In C99 and later standards, what is the maximum number of parameters a function can have?

What is the primary advantage of using function pointers in C?

How does the volatile keyword affect function behavior in C?

What will happen if a recursive function has no base case?

Consider mutual recursion: void funcA(int n); void funcB(int n); funcA calls funcB and vice versa. What is required?

What is the correct way to return multiple values from a function in C?

Analyze: int (*funcPtr)(int, int); What does this declaration represent?

In C99 standard, what is true about function declarations at block scope?

Which approach is more efficient for passing large structures to functions?

What does the restrict keyword do when used with pointer parameters in C99?

What will this code output? int x = 10; int* getAddress() { return &x; } main() { int *ptr = getAddress(); printf("%d", *ptr); }

What happens when a function with variadic parameters is called with fewer arguments than expected?

How are function arguments evaluated in C?

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