掌握SQL与C++：开启数据库与编程之旅

掌握SQL与C++：开启数据库与编程之旅

背景简介

在当今信息化时代，数据与程序构成了现代商业和技术的基石。无论是企业日常运营还是新产品开发，对数据处理和程序编写的熟练掌握都显得尤为重要。本文将探讨两种关键技能：SQL和C++，并分析它们如何帮助我们在商业和技术领域取得成功。

SQL：企业数据管理的关键

SQL（Structured Query Language）是数据库管理不可或缺的工具。它不仅是数据库查询和管理的基础语言，更是企业数据挖掘与决策支持的核心技术。

与用户沟通，洞察需求

在数据管理的过程中，除了与技术团队沟通外，了解程序用户的需求同样关键。只有深入理解业务流程和用户需求，SQL语言才能发挥其最大的效用，帮助我们在庞大的数据海洋中迅速找到所需信息。

简单命令，强大功能

SQL语言的使用门槛相对较低，即便是编程新手也能通过学习简单命令来操作数据库。这些命令可以让我们轻松地提取、更新、插入或删除数据，大大提高工作效率。

C++：通往高级编程的桥梁

C++是一种广泛应用于系统编程的语言，它以效率高、功能强大而著称。无论你是对编程充满热情的初学者，还是希望在职业生涯中进一步提升，学习C++都是一项值得投资的技能。

编程世界的新语言

编程已经成为当今世界不可或缺的一部分，而C++作为通用编程语言，其重要性不言而喻。它不仅是许多操作系统和应用软件的基础，也是许多专业人士首选的编程语言。

面向对象编程的基石

C++的面向对象编程范式不仅帮助程序员更好地组织代码，还能提高软件的可重用性和可维护性。通过学习C++，我们可以深入理解编程的基础概念，为掌握更高级的编程技能打下坚实的基础。

总结与启发

通过学习SQL和C++，我们不仅能够更好地管理企业数据，还能掌握编程的核心原理。SQL作为数据库管理的关键语言，让我们能够高效地操作数据库，而C++则为我们打开了通往编程世界的大门。掌握这两种技能，将使我们在商业和技术领域拥有更广阔的视野和更多的发展机会。

在未来的道路上，无论是继续深化对SQL和C++的理解，还是探索其他编程语言和技术，都希望这篇文章能够为你提供一些启发和指导。记住，技术总是在不断进步，持续学习与实践是保持竞争力的关键。", "IV\n\nC++编程\n\nAfter work guide to master C++ on your own. Build\nyour coding skills and learn how to solve common\nproblems. Transform your passion in a possible job\ncareer as computer programmer.\n\n\x0cIV\n\nC++ 编程\n\nAfter work guide to master C++ on your own. Build\nyour coding skills and learn how to solve common\nproblems. Transform your passion in a possible job\ncareer as computer programmer.\n\n\x0cIntroduction\n\nWelcome to the wonderful world of programming, the chapters\ncontained in this book will give you a basic understanding of programming in C++. By its final chapter, you will be able to create a complete program on your own, using C++.\n\nThis guide is aimed at newcomers to C++. If, however, you are\nentirely new to programming, I recommend first reading our primer to\nprogramming. It covers all the concepts, terms, programming\nparadigms, and coding techniques that a complete novice needs to\nknow.\n\nThis guidebook is going to take some time to look over all of the\nthings that we can do with the C++ language, and how beneficial\nlearning this language can be.\n\nThis object-oriented programming course in C++ language\npresents learners with the concepts and techniques necessary to\ndesign, develop and implement a robust program model effectively.\nAs a learner, you will be able to grasp practical knowledge on how to\napply the fundamental concepts of object-oriented analysis and\ndesign and solve various problems in your day to day activities.\n\nC++ is a computer programming language widely used for\ngeneral-purpose programming. It is an extension of C-language. The\nbasic understanding of C++ can be acquired from C. That’s why both\ncomputer languages are represented as C/C++. Bjarne Stroustrup\ndeveloped this multi-paradigm language in 1979.\n\nIn today’s world, many operating systems use C++ as their basic\nlanguage. Some system drivers, browsers, and games are based on\nC++ programs. It is a free form, compiled, and statically typed\nprogramming language. Many professionals believe that C++ is the\nmost efficient language to achieve the desired results.\n\n\x0c引言\n\n欢迎来到编程的奇妙世界，本书中的章节将为你提供C++编程的基础\n理解。到最后一章，你将能够独立创建一个完整的程序，使用C++。\n\n本指南面向C++的新手。然而，如果你完全不熟悉编程，我建议你\n首先阅读我们的编程入门指南。它涵盖了所有初学者需要了解的概念\n、术语、编程范式和编码技巧。\n\n本手册将花一些时间来审视我们使用C++语言可以做的一切事情，\n\n以及学习这种语言可以带来多大的好处。\n\n这个面向对象的编程课程使用C++语言，向学习者介绍了设计、开\n发和实现一个健壮的程序模型所必需的概念和技术。作为一名学习者\n，你将能够掌握实际知识，了解如何应用面向对象分析和设计的基本\n概念，并解决日常活动中遇到的各种问题。\n\nC++ 是一种广泛用于通用编程的计算机编程语言。它是C语言的扩\n展。可以通过C语言获得对C++的基础理解。这就是为什么这两种计算\n机语言被表示为C/C++。Bjarne Stroustrup 在1979年开发了这种多范式\n语言。\n\n在当今世界，许多操作系统使用C++作为其基础语言。一些系统驱\n动程序、浏览器和游戏基于C++程序。这是一种自由形式的、编译的\n、静态类型编程语言。许多专业人士认为C++是实现预期结果最有效\n的语言。\n\n\x0cLearning code is ultimately the language of the future. We have\n\nall heard something close to that at some point in our lives.\n\nBy the time you reach the end, you should have no problem\nreading C++ code and writing programs that are both interesting and\nuseful. So, let’s dive in and learn C++.\n\n\x0c学习代码归根结底是未来的语言。我们所有人都在生命的某个时刻\n\n听过类似的话。\n\n当你到达终点时，你应该能够无障碍地阅读C++代码，并编写既有\n\n趣又有用的程序。所以，让我们潜心学习C++吧。\n\n\x0cChapter 1: Anatomy of C++\n\nIntroduction to programming languages\n\nAs you already know, the program is nothing but a set of instructions.\nThese instructions are executed by the hardware, which is the\nphysical computer machinery. Though modern computers are fast,\nthey have their limitations. Computers can only understand a set of\ninstructions given in their native language. For this, you should\nunderstand the concepts of machine language, assembly language,\nand high-level languages.\n\nMachine language\n\nlanguages \n\nThough computers are very advanced machines, they cannot\nlike C++ directly. A computer only understands 0s and 1s. They are called bits. And they can only understand instructions given in the binary format. Every set of instructions that we give to sleep you are translated into a set of instructions that tell the processor to do a particular job. You should understand that different types of processors have different types of instruction sets. For example, the Pentium processors will only understand their instructions set. It is a similar case with Macintosh. In the very beginning, programmers had to write their instructions in the binary language. It was very time-consuming and challenging. Luckily, we don’t have to go through all of that.\n\nAssembly language\n\n\x0c第1章：C++的解剖结构\n\n编程语言简介\n\n正如您已经知道的，程序只不过是一系列指令。这些指令由硬件执行\n，硬件就是物理计算机机械。尽管现代计算机速度很快，但它们也有\n局限性。计算机只能理解它们本机语言中给出的一系列指令。因此，\n您应该理解机器语言、汇编语言和高级语言的概念。\n\nMachine language\n\n尽管计算机是非常先进的机器，但它们无法直接理解像C++这样的语\n言。计算机只理解0和1。它们被称为比特。它们只能理解以二进制格\n式给出的指令。我们给计算机的每组指令都被翻译成一组告诉处理器\n执行特定工作的指令。你应该理解，不同类型的处理器有不同的指令\n集。例如，奔腾处理器只能理解它们自己的指令集。Macintosh也是如\n此。在最初，程序员不得不以二进制语言编写他们的指令。这非常耗\n时且具有挑战性。幸运的是，我们不必经历所有这些。\n\nAssembly language\n\n\x0cAs the machine language is tough to deal with, a new language called the assembly language was invented. Here every instruction is given a short name, and the variables are replaced by names and not by binary digits, making it easy for a programmer to write code. You may ask how you can understand and assembly language. It cannot. The assembly language will be converted into machine language with the help of an assembler. You should remember that each CPU has its assembly language. So, the assembly language of a CPU cannot be run on a different CPU. Even assembly language has got its drawbacks. They require large sets of instructions, even for simple tasks.\n\nHigh-level language\n\nThe high-level programming languages came into existence to solve those problems that the assembly and machine languages were causing. These can run on any computer. High-level languages come with A program called a compiler. The role of a compiler is to generate an executable file or a program that a CPU can directly understand. These programs are standalone programs. The modern compilers that are available today are very efficient and fast and converting the code into an executable format. Some of the programming languages use the interpreter. The job of an interpreter is to execute the code but without compiling it to the machine code. But here we won’t learn about an interpreter. Any given programming language can be interpreted or compiled. Languages like C, C++, and PASCAL are compiled while scripting languages like JavaScript and Perl are interpreted.\n\nAsk this question, and you will get a dozen different answers, but, put simply, C++ is a compiled, object-orientated computer-programming language. If you are new to programming, even that has probably left you somewhat confused, so let’s break it down a bit more.\n\nThere are two types of programming language – one is interpreted, and the other is compiled. Interpreted languages are run on an interpreter – this reads the code and executes the commands\n\n\x0c由于机器语言难以处理，因此发明了一种新的语言，称为汇编语言。在这里，每个指令都被赋予了一个简短的名称，变量被名字替换，而不是二进制数字，这使得程序员编写代码变得容易。你可能会问，如何理解汇编语言。它不能。汇编语言将通过汇编器的帮助转换为机器语言。你应该记住，每个CPU都有自己的汇编语言。因此，一个CPU的汇编语言不能在不同的CPU上运行。即使是汇编语言也有其缺点。它们需要大量的指令集，即使是简单的任务。\n\nHigh-level language\n\n高级编程语言的出现是为了解决汇编语言和机器语言引起的问题。这些语言可以在任何计算机上运行。高级语言附带一个称为编译器的程序。编译器的作用是生成一个可执行文件或一个CPU可以直接理解的程序。这些程序是独立的程序。今天可用的现代编译器非常高效和快速，能够将代码转换为可执行格式。一些编程语言使用解释器。解释器的工作是执行代码，但不将其编译为机器代码。但在这里我们不会学习解释器。任何给定的编程语言都可以被解释或编译。像C、C++和PASCAL这样的语言是编译的，而像JavaScript和Perl这样的脚本语言是解释的。\n\n问这个问题，你会得到十几个不同的答案，但简单来说，C++是一种编译的、面向对象的计算机编程语言。如果你是编程新手，即使这个解释可能也让你有些困惑，所以让我们进一步分解一下。\n\n编程语言有两种类型——一种是解释型的，另一种是编译型的。解释型语言是在解释器上运行的——它读取代码并执行命令。\n\n\x0c