计算机专业英语(软件4).ppt

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1、计算机专业英语 张起荣 Unit Two Software Keywords：compiler 编译器编译器maximum最大值最大值procedural 过程化的过程化的low-levele低级低级，底层，底层assembly language汇编语言汇编语言cross-platform跨平台跨平台source code源代码源代码Passage Four C Language Unit Two Software Keywords：embedded system 嵌入式系统嵌入式系统code portability 代码移植性代码移植性system resource 系统资源系统资源inte

2、rpreted languages解释型语言解释型语言stability稳定性稳定性availability可用性可用性Passage Four C Language Unit Two Software Keywords：machine-specific针对于特定机器的针对于特定机器的 abstraction抽取，解析抽取，解析overhead 开销开销algorithm算法算法struct结构体结构体union联合体联合体enum枚举枚举Passage Four C Language Unit Two Software Keywords：variable变量变量function函数函数ope

3、rand操作数操作数operator操作符操作符syntax语法语法loop 循环循环libraries库文件库文件comment 注释注释 Passage Four C Language Unit Two Software Keywords：terminate结束结束load加载加载eidt编辑编辑run运行运行equal相等，等于相等，等于default缺省缺省Passage Four C Language Word-building：super-前缀，意思为超级的。前缀，意思为超级的。例如：例如：supercomputer 超级计算机超级计算机 supermarket 超级市场超级市场P

4、assage Four C Language Unit Two SoftwareWord-building：动词动词+ment=名词名词 例如：例如：implement实现（实现（v）implementation实现（实现（n）move移动移动(v)movement移动移动(n)Passage Four C Language Unit Two SoftwareWord-building：动词动词+ation=名词名词例如：例如：compute实现（实现（v）computation实现（实现（n）initialize 初始化（初始化（v）initialization初始化（初始化（n）Passa

5、ge Four C Language Unit Two SoftwareWord-building：ability，后缀，指，后缀，指的能力，可的能力，可性。性。例如：例如：portability可移植性可移植性availability可用性可用性 stability 稳定性稳定性expandability可扩展性可扩展性maintainability可维护性可维护性Passage Four C Language Unit Two SoftwareWord-building：dis-,前缀，表示破坏或者否定前缀，表示破坏或者否定例如：例如：continue 继续继续 discontinue中断

6、中断,中止中止 connect 连接连接 disconnect 切断切断,断开断开Passage Four C Language Unit Two SoftwareSentences：It was designed to be compiled using a relatively straightforward compiler,to provide low-level access to memory,to provide language constructs that map efficiently to machine instructions,and to require mini

7、mal run-time support.Passage Four C Language Unit Two SoftwareSentences：C was therefore useful for many applications that had formerly been coded in assembly language.Passage Four C Language Unit Two SoftwareSentences：One consequence of Cs wide acceptance and efficiency is that compilers,libraries,a

8、nd interpreters of other programming languages are often implemented in C.Passage Four C Language Unit Two SoftwareSentences：Due to its thin layer of abstractionand low overhead,C allows efficient implementations of algorithms and data structures,which is useful for programs that perform a lot of co

9、mputations.Passage Four C Language Unit Two SoftwareSentences：First,if the variable count were initially set to any number greater than 5,the statements within the loop would not be executed at all,so it is possible to have a while loop that never is executed.Passage Four C Language Unit Two Softwar

10、eSentences：In nearly any context in C,a simple statement can be replaced by a compound statement that will be treated as if it were a single statement as far as program control goes.Passage Four C Language Unit Two SoftwareSentences：The following is a program that generates a list of centigrade and

11、Fahrenheit temperatures and printsa message out at the freezing point of water and another at the boiling point of water.Passage Four C Language Unit Two SoftwareSentences：You will also notice that the printf statements that are in the if statements within the big for loop are indented three additional spaces because they are part of another construct.Passage Four C Language Unit Two Software