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5
一道程序编译顺序的考题,涉及到函数调用的先后顺序及运算符号的优先级等问题。下面我展开给你讲。
C的程序编译总是从main函数开始的,这道题的重点在“fun((int)fun(a+c,b),a-c)) ”语句。
系统首先要确定最外层 fun()函数的实参,第一个参数的确定需要递归调用fun()函数(不妨称其为内层函数)。内层函数的两个参数分别为x=a+b=2+8=10、y=b=5,执行函数体x+y=10+5=15,于是得外层函数的参数x=15。其另一个参数y=a-c=2-b=-6,再次执行函数体,得最终返回值x+y=15+(-6)=9。 (Compiling together the sequence of test procedures, involving the sequence of function calls and operator symbols, such as the priority problem. Now I give you to start speaking. Procedures for C compiler always start from the main function and at这道题the focus of " fun ((int) fun (a+ c, b), ac)) " statement. System must first determine the most outer layer of fun () function of real parameters, the first parameters of recursive calls required fun () function (may be called the inner function). Inner function separately for the two parameters x = a+ b = 2+8 = 10, y = b = 5, to execute the function body x+ y = 10+5 = 15, then the outer function parameters were x = 15 . Its another parameter y = ac = 2-b =- 6, once again to execute the function body may eventually return the value of x+ y = 15+ (-6) = 9.)
- 2009-03-15 15:36:23下载
- 积分:1
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maybegoodSVPWM
SVPWM仿真用simulink,基本出来了(svpwm)
- 2010-01-19 22:12:35下载
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PSOt
说明: PSO工具箱使用简介 方便大家 共同进步(About PSO toolbox to facilitate the use of U.S. common progress)
- 2008-10-08 19:56:34下载
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Designing-a-Fuzzy-Rule-Based-Expert-System-for-Cy
Designing a Fuzzy Rule Based Expert System for Cyber ...
- 2014-10-12 16:56:12下载
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Wilson_th
威尔逊-θ法,机械振动模拟程序,仅供参考(Wilson-θ methord mechinery vibration)
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impulsive-noise
generation of impulsive noise
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Radar
包括雷达LFM信号产生、脉冲压缩、相干积累、MTI处理等方面仿真(Including radar LFM signal generator, pulse compression, coherent accumulation, MTI simulation processing, etc.)
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grey-model
MATLAB求解灰色模型的编程,直接换掉数据就可以了
(MATLAB in gray programming model)
- 2012-08-21 18:57:12下载
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code
光纤耦合仿真MATLAB程序包,可以仿真不同芯径的光纤模式分布,可以仿真光纤的耦合损耗。(fiber coupling simulation)
- 2021-01-25 12:18:42下载
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fade_fs
服从频率选择性衰落并且也服从瑞利衰落的信道。(Subject to frequency selective fading and also subject to Rayleigh fading channel.)
- 2009-05-23 00:37:12下载
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