C Programming - MCQ Practice Questions

What will be the output of: int x = 10; printf("%d %d", x, x++);

Consider the expression: int arr[5]; What does arr represent without the index?

Which storage class has a default value of 0 if not explicitly initialized?

What will be the output of the following code? #include <stdio.h> int main() { int x = 5; printf("%d", ++x + x++); return 0; }

What is the main difference between #define and const in C?

Which of the following correctly declares a function pointer?

What will be the output of the following code? #include <stdio.h> int main() { int x = 5; int y = ++x * ++x; printf("%d", y); return 0; }

Consider a function declared as 'static int func()'. What is the scope of this function?

What is the output of: printf("%d", (int)3.7);?

Which of the following best describes the 'register' storage class in modern C compilers?

What will be the output of: int x = 5; printf("%d", x++ + ++x);

What is the result of: int x = 10; int y = x++ + x++;

What is the output of: int x = 5; int y = ++x + x++;

What is the scope of a variable declared inside a block with 'static'?

What will be the output of: int a = 1; int b = 2; a = a + b; b = a - b; a = a - b; printf("%d %d", a, b);

Which of the following about function pointers in C is correct?

What is the output of: float x = $\frac{5}{2}$; printf("%f", x);

Which of the following correctly uses memcpy()?

Consider the following declaration: int (*func_ptr)(int, int, int); Which of the following function signatures can be correctly assigned to func_ptr?

What will be the size of the following structure? struct test { char c; int i; float f; };