Stacks Application

Function evaluateExpression

1. Explain how this function evaluates an entire postfix expression.

2. Examine the pseudocode and the implementation of this function.

Function evaluateOpr

1. Describe how this function evaluates expressions using a stack.

2. Examine the pseudocode and the implementation of this function.

Function discardExp

1. Briefly note the implementation of this function.

Function printResult

1. Explain how the result of a postfix expression is output.

2. Illustrate how to use these functions in a program with listing in this section