This is the c++ programming questions and answers section on "Operators and Statements" 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. Which operator is having right to left associativity in the following?
- A. Array subscripting
- B. Function call
- C. Addition and subtraction
- D. Type cast
Answer: Option D
Explanation:
Type cast
2. Which operator is having the highest precedence?
- A. postfix
- B. unary
- C. shift
- D. equality
Answer: Option A
Explanation:
The operator which is having highest precedence is postfix and lowest is equality.
3. What is this operator called ?: ?
- A. conditional
- B. relational
- C. casting operator
- D. none of the mentioned
Answer: Option A
Explanation:
In this operator, if the condition is true means, it will return the first operator, otherwise second operator.
4. What is the output of this program?
#include
using namespace std;
int main()
{
int a;
a = 5 + 3 * 5;
cout << a;
return 0;
}
Answer: Option B
Explanation:
Because the * operator is having highest precedence, So it is executed first and then the + operator will be executed.
5. What is the use of dynamic_cast operator?
- A. it converts virtual base class to derived class
- B. it converts virtual base object to derived objeccts
- C. it will convert the operator based on precedence
- D. None of the mentioned
Answer: Option A
Explanation:
Because the dynamic_cast operator is used to convert from base class to derived class.
