1 Postfix expressions are evaluated according to the following rules a Scan the expression from left to

Question

1. Postfix expressions are evaluated according to the following rules:

a. Scan the expression from left to

right.

b. If an operator is found, back up to get the required number ofoperands, evaluate the operator, and continue.

2. The STL class stack can be used to implement a stack in a program.

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