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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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Matlab_LMS3
自适应线性预测编码问题,利用白噪声序列生成信号序列,进而进行LMS迭代,计算滤波器权系数的轨迹曲线和衰减曲线(Adaptive linear predictive coding problem, the use of white noise sequence to generate signal sequence, and then LMS iteration to calculate the filter weights of the trajectory curve and the attenuation curve)
- 2008-04-25 10:22:33下载
- 积分:1
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wind_turbine_blade_coordinates_calculate
说明: 该code读出naca4412.txt中基本balde坐标,在读取data1.txt中设计要求,生成FinalCoordinates.txt文件,包含所有生成balde airfoil所需coordinates。(this matlab code read the blade coordinates in naca4412.txt, and then read the design requirements in data1.txt. Finally, it will generate the FinlCoordinates.txt which include all the coordinates of blade airfoil.)
- 2010-04-07 08:30:23下载
- 积分:1
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Antenna_Toolbox
matlab antenna tool box
matlab天线工具箱(matlab antenna tool box matlab antenna toolbox)
- 2012-10-18 15:57:54下载
- 积分:1
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Survivability-of-network
以生存性、最小生成树数目和介数评价网络节点的重要性。(Survivability, the number of minimum spanning tree and the number of referrals to evaluate the importance of the network nodes.)
- 2013-05-10 15:04:19下载
- 积分:1
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管壳式换热器设计计算用matlab源代码
管壳式换热器中的热量计算,基于matlab实现(Heat exchanger calculation)
- 2018-03-17 15:56:16下载
- 积分:1
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zhang
matlab环境下的张正友法标定,可以获得相机的内参外参(Zhang Zhengyou calibration method under matlab environment, you can get the camera' s internal reference external parameters)
- 2013-12-27 11:41:27下载
- 积分:1
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fast-S-transform
基于快速S变换的配电网故障选线,比传统的S变换计算速度快(Fault Line Selection in Distribution Networks S Transform)
- 2017-03-01 10:21:02下载
- 积分:1
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httplib2-0.9.tar
The module can optionally operate with a private cache that understands the Cache-Control:
header and uses both the ETag and Last-Modified cache validators. Both file system
and memcached based caches are supported.
(Automatically adds back ETags into PUT requests to resources we have already cached. This implements Section 3.2 of Detecting the Lost Update Problem Using Unreserved Checkout)
- 2015-04-02 02:52:22下载
- 积分:1
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LCL_sanjiao
D-STATCOM仿真模型,三相四线制,同时补偿谐波无功不对称(D-STATCOM simulation model, three-phase four-wire system, while compensating harmonic reactive asymmetry)
- 2016-05-13 22:17:28下载
- 积分:1