C语言经典案例学习资料《经典C程序100例》

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资源摘要信息:"本资源是一个名为'The_C_Program_Sample.rar_The Program'的压缩包文件,包含了'经典c程序100例yue.pdf',这是一个关于C语言学习的集合,旨在提供100个C语言编程示例。这些示例被精心挑选,涵盖了C语言的核心概念和编程技巧,非常适合初学者进行系统学习和实践操作。" 知识点详细说明: 1. C语言基础:C语言是计算机科学中广泛使用的编程语言之一,它是一种中级语言,既具有高级语言的特性,也具备一些低级语言的特性。通过这100个示例,学习者可以系统地掌握C语言的基本语法、数据类型、控制结构等基础知识。 2. 算法实现:在学习C语言的过程中,算法是非常重要的部分。通过实践这100个示例,学习者能够理解并实现各种常见的算法,如排序、搜索、数学计算等,这对于提升编程思维和解决问题的能力至关重要。 3. 代码规范:代码的规范性对于编程来说非常重要。这100个示例将会展示良好的编程习惯,包括代码的格式化、注释的使用、变量命名等,这有助于学习者培养出编写清晰、可维护的代码的习惯。 4. 函数使用:函数是C语言中组织代码的单元,通过将程序分解成独立的函数模块,可以提高代码的复用性和可读性。学习者将通过这些示例学会如何定义和调用函数,以及如何处理函数参数和返回值。 5. 指针理解:指针是C语言中一个高级特性,它允许程序直接操作内存中的地址。通过这些示例的学习,学习者可以深入理解指针的概念、指针与数组的关系、指针与函数的关系等,这将大大增强对C语言内存管理的理解。 6. 文件操作:在实际编程中,对文件进行读写操作是必不可少的技能。本资源中的示例可能会包括文件的打开、读取、写入、关闭等操作,这对于学习者掌握文件I/O编程非常有帮助。 7. 结构体与联合体:结构体和联合体是C语言中用于描述复杂数据类型的方式。通过这些示例,学习者可以学习如何定义和使用结构体、联合体以及它们在数据管理和程序设计中的作用。 8. 动态内存分配:动态内存分配允许程序在运行时分配内存,这对于需要处理不确定大小数据的情况非常有用。学习者将通过示例了解动态内存分配函数(如malloc、calloc、realloc和free)的使用方法。 9. 调试技巧:在学习编程的过程中,调试是不可或缺的一部分。这些示例可能会包含一些常见的调试技巧和方法,帮助学习者在遇到程序错误时能够有效地定位问题并解决问题。 10. 实际应用:资源中的示例不仅仅局限于理论,很多示例可能与实际应用相结合,如简单的计算器、数据管理工具、小游戏等。这有助于学习者将理论知识转化为实际的编程技能。 总的来说,该资源是一个非常适合C语言初学者的实用学习材料,通过实例教学的方式,可以帮助学习者快速掌握C语言的编程技巧,并将理论与实践相结合,为后续的软件开发工作打下坚实的基础。

请解释此段代码class GATrainer(): def __init__(self, input_A, input_B): self.program = fluid.default_main_program().clone() with fluid.program_guard(self.program): self.fake_B = build_generator_resnet_9blocks(input_A, name="g_A")#真A-假B self.fake_A = build_generator_resnet_9blocks(input_B, name="g_B")#真B-假A self.cyc_A = build_generator_resnet_9blocks(self.fake_B, "g_B")#假B-复原A self.cyc_B = build_generator_resnet_9blocks(self.fake_A, "g_A")#假A-复原B self.infer_program = self.program.clone() diff_A = fluid.layers.abs( fluid.layers.elementwise_sub( x=input_A, y=self.cyc_A)) diff_B = fluid.layers.abs( fluid.layers.elementwise_sub( x=input_B, y=self.cyc_B)) self.cyc_loss = ( fluid.layers.reduce_mean(diff_A) + fluid.layers.reduce_mean(diff_B)) * cycle_loss_factor #cycle loss self.fake_rec_B = build_gen_discriminator(self.fake_B, "d_B")#区分假B为真还是假 self.disc_loss_B = fluid.layers.reduce_mean( fluid.layers.square(self.fake_rec_B - 1))###优化生成器A2B,所以判别器结果越接近1越好 self.g_loss_A = fluid.layers.elementwise_add(self.cyc_loss, self.disc_loss_B) vars = [] for var in self.program.list_vars(): if fluid.io.is_parameter(var) and var.name.startswith("g_A"): vars.append(var.name) self.param = vars lr = 0.0002 optimizer = fluid.optimizer.Adam( learning_rate=fluid.layers.piecewise_decay( boundaries=[ 100 * step_per_epoch, 120 * step_per_epoch, 140 * step_per_epoch, 160 * step_per_epoch, 180 * step_per_epoch ], values=[ lr, lr * 0.8, lr * 0.6, lr * 0.4, lr * 0.2, lr * 0.1 ]), beta1=0.5, name="g_A") optimizer.minimize(self.g_loss_A, parameter_list=vars)

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2023-06-10 上传

The programme should have the following features: ● A menu including Open and Exit where Open starts a JFileChooser to select the file with the questions inside and Exit ends the programme. ● Once a file is loaded, the GUI should display one question and its answers at a time. ● The user should be able to select an answer and they should be informed if they were correct or not. ● The user should be made aware of the number of correctly answered and the total number of questions answered. ● The user should only be able to proceed to the next question once they answered the current one. ● Once all questions have been answered, the user should be informed of their overall score and that the game has finished. The Open menu item should now be enabled to start a new quiz. Optionally, you can add a restart menu item to redo the current quiz. Concrete sub-tasks: a) define a class called Question to hold a single question, i.e. the text, the possible answers, and the correct answer index; (0.25P) b) write a method to select a file via a JFileChooser and to read all the questions from that file into an array/list of Question objects (assume that file has the structure mentioned above); (0.25P) c) design and implement a GUI with the components mentioned above: A menu, ability to display the question and answers, ability to select an answer, show the outcome and score, and proceed to the next question. (Appropriate layout: 1P, Class extends JFrame: 0.25P, Class follows OOP principles: 0.25P, Global set-up in main method: 0.25P)1 d) write a method to display a question on the GUI you designed; (0.25P) e) implement an actionPerformed method to respond to user interactions with the GUI. Make sure to enable and disable interactive components as required, e.g. the user should not be able to skip to the next question without selecting an answer first and they should not be able to load a new quiz before finishing the current one;

2023-05-29 上传