This is the c++ programming questions and answers section on "Pointers" with explanation for various interview, competitive examination and entrance test. Solved examples with detailed answer description, explanation are given and it would be easy to understand.
1. What does the following statement mean?
int (*fp)(char*)
- A. pointer to a pointer
- B. pointer to an array of chars
- C. pointer to function taking a char* argument and returns an int
- D. function taking a char* argument and returning a pointer to int
Answer: Option C
Explanation:
pointer to function taking a char* argument and returns an int
2. The operator used for dereferencing or indirection is ____
Answer: Option A
Explanation:
*
3. Choose the right option
string* x, y;
- A. x is a pointer to a string, y is a string
- B. y is a pointer to a string, x is a string
- C. both x and y are pointer to string types
- D. none of the mentioned
Answer: Option A
Explanation:
* is to be grouped with the variables not the data types.
4. Which one of the following is not a possible state for a pointer?
- A. hold the address of the specific object
- B. point one past the end of an object
- C. zero
- D. point to a tye
Answer: Option D
Explanation:
A pointer can be in only 3 states a,b and c.
5. Which of the following is illegal?
- A. int *ip;
- B. string s, *sp = 0;
- C. int i; double* dp = &i;
- D. int *pi = 0;
Answer: Option C
Explanation:
dp is initialized int value of i.
