1.Create an empty stack for operators. 2.Read the infix expression from left to right (character by character). 3.If the character is an operand (letter or digit), append it to the postfix output.

To evaluate a postfix expression, you need a stream of tokens and a stack that holds tokens. To evaluate an expression like 2 3 +, you read in the tokens one at a time, from left to right, and apply ...

To evaluate a postfix expression, you need a stream of tokens and a stack that holds tokens. For example, to evaluate 2 3 +, you read in the tokens one at a time, from left to right, and apply the ...