计算器（c++课程设计）资源-CSDN文库

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h：4个

cpp：3个

obj：3个

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在C++编程语言中，创建一个简单的计算器是一个常见的课程设计任务，它可以帮助初学者更好地理解基本的输入输出、条件语句、循环结构以及函数的使用。在这个项目中，我们将探讨如何构建这样一个计算器。计算器的基本功能包括加法、减法、乘法和除法。在C++中，我们可以使用标准库中的`iostream`来处理输入输出，`<iostream>`包含了`cin`和`cout`，分别用于接收用户输入和显示计算结果。 ```cpp #include <iostream> int main() { double num1, num2; char operation; std::cout << "请输入第一个数字: "; std::cin >> num1; std::cout << "请输入操作符(+, -, *, /): "; std::cin >> operation; std::cout << "请输入第二个数字: "; std::cin >> num2; // 计算并输出结果 switch (operation) { case '+': std::cout << "结果是: " << num1 + num2 << std::endl; break; case '-': std::cout << "结果是: " << num1 - num2 << std::endl; break; case '*': std::cout << "结果是: " << num1 * num2 << std::endl; break; case '/': if (num2 != 0) { std::cout << "结果是: " << num1 / num2 << std::endl; } else { std::cout << "错误：除数不能为零" << std::endl; } break; default: std::cout << "错误：无效的操作符" << std::endl; break; } return 0; } ``` 这段代码中，我们定义了两个浮点型变量`num1`和`num2`，用于存储用户输入的两个数字，以及一个字符变量`operation`来存储运算符。通过`std::cin`读取用户输入，并用`switch`语句根据运算符执行相应的计算。注意，在除法操作中，我们需要检查除数是否为零，以避免除零错误。为了提高计算器的用户体验，可以考虑添加更多的功能，如连续计算、求平方根、对数等。这可能需要引入额外的库，比如`cmath`来实现数学函数。同时，也可以增加错误处理机制，确保用户输入的数据类型正确。此外，为了使程序更易于维护和扩展，可以将每个计算功能封装成独立的函数，如`add()`、`subtract()`、`multiply()`和`divide()`。这样，主程序只需要调用这些函数，而不用关心具体的计算过程。 ```cpp double add(double a, double b) { return a + b; } // 其他函数类似实现... int main() { // ... switch (operation) { case '+': std::cout << "结果是: " << add(num1, num2) << std::endl; break; // ... } // ... } ``` 在实际的课程设计中，你可能会被要求提供源代码文件（如`calculator.cpp`）和对应的头文件（如`calculator.h`），以便于老师或同学理解和复用你的代码。压缩包中的`jisuanqi`可能就是这个项目的源代码目录，包含所有相关的C++源文件和资源。总结一下，这个C++课程设计的主要知识点包括： 1. 输入输出流`iostream`的使用 2. 基本数据类型和变量声明 3. `switch`语句的使用 4. 函数的定义和调用 5. 错误处理和边界条件检查 6. 结构化编程思想的应用通过完成这个项目，学生可以深入理解C++的基本语法和程序设计原理，为后续的高级编程学习打下坚实的基础。

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jisuanqi.rar （28个子文件）

jisuanqi

StdAfx.cpp 210B

resource.h 1KB

jisuanqi.aps 36KB

jisuanqi.ncb 57KB

jisuanqi.dsw 524B

jisuanqi.cpp 2KB

jisuanqi.plg 757B

jisuanqi.h 1KB

jisuanqiDlg.cpp 8KB

Debug

jisuanqi.pdb 369KB

jisuanqiDlg.obj 66KB

vc60.pdb 356KB

vc60.idb 193KB

jisuanqi.res 3KB

jisuanqi.obj 14KB

jisuanqi.exe 116KB

StdAfx.obj 103KB

jisuanqi.pch 5.24MB

jisuanqi.ilk 208KB

ReadMe.txt 4KB

jisuanqi.clw 2KB

StdAfx.h 1KB

jisuanqi.dsp 4KB

jisuanqi.opt 50KB

jisuanqi.rc 6KB

res

jisuanqi.rc2 400B

jisuanqi.ico 1KB

jisuanqiDlg.h 2KB

======================================================================== MICROSOFT FOUNDATION CLASS LIBRARY : jisuanqi ======================================================================== AppWizard has created this jisuanqi application for you. This application not only demonstrates the basics of using the Microsoft Foundation classes but is also a starting point for writing your application. This file contains a summary of what you will find in each of the files that make up your jisuanqi application. jisuanqi.dsp This file (the project file) contains information at the project level and is used to build a single project or subproject. Other users can share the project (.dsp) file, but they should export the makefiles locally. jisuanqi.h This is the main header file for the application. It includes other project specific headers (including Resource.h) and declares the CJisuanqiApp application class. jisuanqi.cpp This is the main application source file that contains the application class CJisuanqiApp. jisuanqi.rc This is a listing of all of the Microsoft Windows resources that the program uses. It includes the icons, bitmaps, and cursors that are stored in the RES subdirectory. This file can be directly edited in Microsoft Visual C++. jisuanqi.clw This file contains information used by ClassWizard to edit existing classes or add new classes. ClassWizard also uses this file to store information needed to create and edit message maps and dialog data maps and to create prototype member functions. res\jisuanqi.ico This is an icon file, which is used as the application's icon. This icon is included by the main resource file jisuanqi.rc. res\jisuanqi.rc2 This file contains resources that are not edited by Microsoft Visual C++. You should place all resources not editable by the resource editor in this file. ///////////////////////////////////////////////////////////////////////////// AppWizard creates one dialog class: jisuanqiDlg.h, jisuanqiDlg.cpp - the dialog These files contain your CJisuanqiDlg class. This class defines the behavior of your application's main dialog. The dialog's template is in jisuanqi.rc, which can be edited in Microsoft Visual C++. ///////////////////////////////////////////////////////////////////////////// Other standard files: StdAfx.h, StdAfx.cpp These files are used to build a precompiled header (PCH) file named jisuanqi.pch and a precompiled types file named StdAfx.obj. Resource.h This is the standard header file, which defines new resource IDs. Microsoft Visual C++ reads and updates this file. ///////////////////////////////////////////////////////////////////////////// Other notes: AppWizard uses "TODO:" to indicate parts of the source code you should add to or customize. If your application uses MFC in a shared DLL, and your application is in a language other than the operating system's current language, you will need to copy the corresponding localized resources MFC42XXX.DLL from the Microsoft Visual C++ CD-ROM onto the system or system32 directory, and rename it to be MFCLOC.DLL. ("XXX" stands for the language abbreviation. For example, MFC42DEU.DLL contains resources translated to German.) If you don't do this, some of the UI elements of your application will remain in the language of the operating system. /////////////////////////////////////////////////////////////////////////////

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