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实用C语言程序设计

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实用C语言程序设计

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《实用C语言程序设计》将C语言的编程理念和语法相结合,共划分为10章进行讲解,内容编排合理,深入浅出,通俗易懂。每章内容相对独立完整,便于学生学习和理解,章节之间衔接流畅。每章均配有大量实际应用中的案例程序,并配有分析和讲解过程,课后配有相关习题。

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第1章 C语言概述
1.1 计算机硬件的组成和工作机制
1.1.1 计算机硬件的组成
1.1.2 二进制与计算机的工作机制
1.2 程序设计语言与计算机软件
1.2.1 程序设计语言概述
1.2.2 计算机软件
1.3 C语言的发展历程
1.4 C程序简介
1.4.1 C程序示例
1.4.2 C程序的加工和执行
1.5 C语言程序设计方法
1.5.1 分析问题,明确功能需求
1.5.2 设计解决问题的方案
1.5.3 使用C语言编程实现
1.5.4 程序的测试和维护
1.6 上机编写C程序
习题
第2章 数据
2.1 程序与内存
2.1.1 计算机的内存
2.1.2 程序的执行与内存分配
2.2 程序对数据的使用
2.2.1 数据的分类
2.2.2 数据在程序中的表现形式一一变量与常量
2.2.3 变量的命名与使用
2.2.4 数据的格式化输入和输出
2.2.5 C程序的主要元素
2.3 整型数据
2.3.1 整型数据的分类和存储
2.3.2 整型变量的使用
2.4 浮点型数据
2.4.1 浮点型数据的分类和存储
……
第3章 程序设计初步
第4章 选择结构
第5章 循环结构
第6章 函数
第7章 数组
第8章 结构
第9章 指针
第10章 文件
参考文献
Book Abstract

1.5 C语言程序设计方法
程序设计语言是使用计算机解决问题的工具,要想更好地掌握C语言,我们首先要理解使用C语言解决问题时的思考方式。C语言是一种面向过程的结构化程序设计语言,以解决问题的过程为中心,采用自顶向下、逐步求精的思考方式。首先分析出解决问题所需要的主要步骤,然后通过不断细化的方式分别实现这些步骤,最终达到解决问题的目的。
例如,以学生起床上学为例,使用面向过程的思考方式就可将其归纳为几个步骤:①起床;②穿好衣服;③洗漱;④去学校。
这几个步骤就是完成起床上学这个问题所对应的解决方案,由顺序的4个步骤构成。明确了解决问题的步骤后,只需逐个实现这些步骤就可以了。
当我们面对一个相对复杂的问题时,通常并不能直接给出问题的详细解决方案,而是需要通过对用户需求的分析,寻找解决问题的方法,并逐步将其步骤化。所谓解决问题的方法就是从现有的初始状态出发,通过一系列的处理,最终实现用户需求的过程。解决方案确定后,需要使用C语言编程实现,后续还会有程序调试和测试等相关工作。综上,用C语言开发程序的过程大体可以分为四个阶段:
〕.分析问题
准确描述出需要解决的问题,明确问题的初始状态和预期结果。
2.设计解决问题的方法
通过自顶向下的分析方法,针对初始输入状态进行分析,明确实现预期结果所需的核心过程,并对核心过程中的复杂问题逐步细化,最终设计出解决问题的完整步骤。
3.编程实现
使用C语言编程实现解决方案。
4.程序的测试与维护
测试程序在多种输入条件下的运行情况,确保达到用户的预期要求,并在交付用户使用后的一定期限内(由双方共同制定)修正以前未曾发现的错误,测试后提交给用户新的版本,直到维护期结束或软件停止使用。
下面,我们将以“设计一个计算器,用于实现加减乘除等简单的二元操作”为需求,详述如何完成C语言程序设计中这四个阶段的工作。
……

Introduction

C语言是一种被广泛使用的结构化程序设计语言,也是软件开发人员从事软件开发工作的重要工具,具有与计算机底层结合紧密、执行效率高等特点,深受编程爱好者的喜爱。C语言程序设计课程一直是高等院校计算机及相关专业的核心专业基础课,对于培养学生的程序设计能力具有重要作用。
本书作者曾经在企业从事软件开发工作多年,积累了丰富的使用C语言进行软件开发的实践经验,进入高校后从事教学工作,讲授C语言程序设计课程。希望能够借助此书与读者分享C语言的学习经验和体会,帮助初学者开启程序设计的大门,为后续计算机相关知识和理论的学习打下良好的基础。
本书具有如下特色:
(1)内容编排合理、整体性强,讲解深入浅出。本书在内容安排上,既考虑到了相关知识的顺序性和依赖关系,又确保每个章节相对独立完整,使得读者在阶段性学习过程中仍能够从整体上把握程序设计的各个阶段。内容讲述过程中,尊重人们对知识的认知规律,通过类比等方法,深入浅出,将抽象的原理具体化、形象化,便于初学者掌握。
(2)注重结构化程序设计思想的讲解和能力培养。结构化程序设计以过程为中心,强调功能分解和模块化设计,采用自顶向下、逐步求精的方法进行问题分析和程序设计。本书将自顶向下、逐步求精的思想贯穿始终,重视程序的函数分解,培养学生使用结构化思想去分析问题和解决问题的能力。
(3)程序示例更贴近实际应用,实用性强,有助于提升学生的学习兴趣。本书为每章都配备了大量精选的程序实例辅助教学,在案例的选择上尽可能贴近实际应用,减少纯数学问题的案例,使读者能够更为直观地感受到知识的实用价值,同时重视从问题到程序,从理论到实际啦甩的过程讲解,提升学习兴趣。
(4)善于归纳总结。书中给出了很多一般性的程序设计原则和实战经验,供读者参考。包括对复杂程序进行函数分解的一般原则、根据问题的描述编写函数定义的原则、C语言中指针的主要应用领域等。
本书共分10章,第1章讲述了计算机的软硬件基础知识和相关工作原理,给出了程序设计语言的发展过程和高级语言的实现方法,介绍了C语言的历史和使用C语言进行程序设计的方法,以及上机编写C程序的一般步骤。第2章对C语言中使用的数据类型进行了总体介绍,重点讲解了基本数据类型的特点和使用方法,讲述了变量和常量在程序中的作用和输入输出方法。第3章介绍了常用的算法和算法的描述方式,给出了程序设计中常用的三种基本结构,并通过实例讲解了自顶向下、逐步求精的分析过程。第4章讲述了选择结构的C语言实现方法,包括条件判断的描述,if语句、switch语句和条件运算符的使用等。
……

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