Computers and Technology, 29.11.2020 22:10 xoxo12376
Define a SCHEME function, named (eval-postfix p), that will take postfix expression (stored in a list of integers representing operands and characters representing operators), evaluate that expression, and return the result. Your function should support the operations of addition (#+), subtraction (#-), multiplication (#*), divi- sion(#/), and exponentiation(#\ˆ). You may want to work incrementally by starting with a function that takes a character representing an operator and can pop two operands off of a stack, evaluate the operator and push the result back on the stack. Next you can add a function that evaluates a postfix expression by pushing operands onto the stack and evaluating operators when encountered. Note, you may want to use the number? function to determine whether an item in the list is an operand or an operator.
Answers: 3
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Define a SCHEME function, named (eval-postfix p), that will take postfix expression (stored in a lis...
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