While evaluating a postfix expression, when an operator is encountered, what is the correct operation to be performed?

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answerhappygod
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While evaluating a postfix expression, when an operator is encountered, what is the correct operation to be performed?

Post by answerhappygod »

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
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