The primary goal of this larger example is to show you how to design a program that accepts arithmetic expressions from the user and then displays the results of evaluating those expressions. The basic operation of the interpreter is therefore to execute the following steps repeatedly as part of a loop in the main program:
1. Read in an expression from the user and translate it into an appropriate internal form.
2. Evaluate the expression to produce an integer result.
3. Print the result of the evaluation on the console.
This iterated process is characteristic of interpreters and is called a read-eval-print loop.
1. Read in an expression from the user and translate it into an appropriate internal form.
2. Evaluate the expression to produce an integer result.
3. Print the result of the evaluation on the console.
This iterated process is characteristic of interpreters and is called a read-eval-print loop.
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