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
This question is from Application of Stacks topic in section Application of Stacks of Data Structures & Algorithms I
I had been asked this question in homework.