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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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sift-0.9.19.tar
Scale Invariant Feature Transform (SIFT) has shown to be very powerful for general object detection/recognition. And recently, it has been applied in face recognition. This is the matlab code.
- 2010-09-22 09:49:36下载
- 积分:1
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data_share_in_Matlab
从变量可见性角度分析,Matlab程序运行过程中(以下不特别说明都是指在Matlab程序中),不同形式的变量可见范围源于于面向对象编程的概念.(variables can be seen from the point of view of analysis, Matlab procedures in the process (not refer specifically explain procedures in Matlab), different forms of variable can be seen in the area stems from the object-oriented programming concepts.)
- 2006-10-26 22:38:12下载
- 积分:1
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LS-CH.EST-a-MMSE-CH.EST
LS channel estimation
MMSE channel estimation
used in lte system
- 2014-01-28 11:06:11下载
- 积分:1
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geneticA
使用遗传算法的Matlab思想解决TSP问题,(Genetic)
- 2010-06-08 20:44:06下载
- 积分:1
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melfilter
melfiltter function use for speech recognition and have mel filter bank
- 2010-09-02 02:46:27下载
- 积分:1
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LSM
说明: 增广最小二乘法,根据最小二乘法改变,用于辨识参数(LSM)
- 2010-04-15 22:22:15下载
- 积分:1
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bai4
matlab code for fatorial
- 2012-03-26 17:05:17下载
- 积分:1
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单自由度强迫振动
说明: 代码来自书籍:振动力学基础与MATLAB应用
振动力学案例:单自由度强迫振动(Vibration mechanics case: single degree of freedom forced vibration)
- 2020-07-06 14:46:42下载
- 积分:1
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GMSKMAT
GMSK 的调制与解调 可以出图 MATLAB(GMSK modulation and demodulation can be a MATLAB Figure)
- 2008-05-22 21:25:13下载
- 积分:1