Sample

What does the following declaration mean?

int (*ptr)[5];

• ptr is a pointer to an array of 5 integers.
• ptr is a pointer to an array of 10 integers.
• ptr is a pointer to a single integer.
• ptr is an array of 5 integers.

Which of the following can be checked in a switch statement?

• Integer values

• Character values

• Both a and b

• Floating-point values

Identify the error in the code:

for (int i = 0; i < 5; i--) {

printf("%d", i);

}

• Infinite loop

• Syntax Error

• i is undeclared

• Logical error

What is the correct syntax for declaring a function that does not return a value?

• a) int func();
  

• b) void func();
  

• c) func();
  

• d) function func();

Which type of variables can retain their values between function calls?

• a) auto
  

• b) register
  

• c) static
  

• d) extern

Which of the following is an incorrect function prototype?

• a) int func(int a, int b);
  

• b) float func(int, float);
  

• c) double func(double);
  

• d) int func(a, b);

What is the output of the following code?

int arr[] = {1, 2, 3, 4};

printf("%d", *(arr + 2));

• a) 1
  

• b) 2
  

• c) 3
  

• d) 4

Which of the following statements is incorrect about pointers?

• a) Pointers can be dereferenced using the * operator.
  

• b) The & operator gives the address of a variable.
  

• c) Pointers can store both integer and float addresses without casting.
  

• d) The NULL pointer points to no valid address.

What does the fopen() function return if it fails to open a file?

• a) NULL
  

• b) -1
  

• c) 0
  

• d) Garbage value

What does the following code print?

#define PI 3.14

printf("%f", PI);

• a) 3.14
  

• b) 3.140000
  

• c) Compilation error
  

• d) Undefined behavior