McqMate
| Q. |
While evaluating a postfix expression, when an operator is encountered, what is the correct operation to be performed? |
| A. | push it directly on to the stack |
| B. | pop 2 operands, evaluate them and push the result on to the stack |
| C. | pop the entire stack |
| D. | ignore the operator |
| Answer» B. pop 2 operands, evaluate them and push the result on to the stack | |
| Explanation: when an operator is encountered, the first two operands are popped from the stack, they are evaluated and the result is pushed into the stack. | |
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Information Retrival Techniques