[Experience compilation principles] compile a simple calculator and compile a principle Calculator
Demo: CaculationTest
Preface
Have you ever thought about writing a calculator yourself? Enter some mathematical expressions to calculate and parse
The built-in calculators in windows are also quite a lot used, but basically they all do some simple addition, subtraction, multiplication, division, and frankly speaking, I didn't even know the difference between Ce and C keys before, let alone
[C language exploration journey] Part 1 Lesson 5: computing that point, journey Part 1
Introduction
1. Course outline
2. Lesson 5: Computing
3. Lesson 6: conditional expressions
Course outline
Our courses are divided into four parts. Each part
Demo: caculationtest
Preface
Have you ever thought about writing a calculator yourself? Enter some mathematical expressions to calculate and parse the generated results.
If you don't have one, you can start to think about it now. Maybe you will
8th Chapter Anomalies
8.1 What is an exception
>>> 1/0
Traceback (most recent call last):File "", line 1, in 1/0Zerodivisionerror:integer division or modulo by zero
8.2 Error in your own way
8.2.1 Raise statement>>> Raise Exception
Traceback (most
Assume that a text box in the system allows the user to enter a string expression, such"5 Division 2 multiplication 3 modulo 4 multiplication 6", The system is required to be able to calculate the expression result according to the Java integer
To check the communication reliability, You Need To 'check'. The verification is performed from the data itself. It relies on a certain form of mathematical conventions for inspection. The verification result is reliable or unreliable, if it is
Exception what is exception
Python uses an exception object to indicate exceptions. An error occurs. If the exception object is not processed or captured, the program terminates the execution with the so-called trace (Traceback, an error message:
>>>
What is an exceptionPython uses exception objects (exception object) to represent exception conditions. An exception is thrown when an error is encountered. If the exception object is not handled or captured, the program terminates execution with
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