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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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SVD
搜集的SVD的一些小程序。matlab编写。(SVD collected some small programs. matlab prepared.)
- 2013-11-22 19:10:01下载
- 积分:1
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matlab_Robotpath
用Matlab实现了机器人最优路径规划中的全局路径规划,算法采用的是基于方向权的二叉树算法。(Using Matlab to achieve the optimal robot path planning in the global path, planning algorithm uses a binary tree algorithm based on the direction. )
- 2009-11-16 21:52:02下载
- 积分:1
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172
V-Detector algorithm with tree-based structures
- 2015-03-07 15:22:56下载
- 积分:1
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Rayleigh_fading_channel_simulation
This program is to simulate the Rayleigh fading channels using a p-th order autoregressive model AR(p)
- 2017-07-05 15:44:22下载
- 积分:1
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conv
matlab 卷积码的仿真,很好很实用 经过了测试的(matlab simulation of convolutional codes)
- 2010-07-17 18:20:56下载
- 积分:1
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possion
说明: matlab编写的泊松分布仿真代码,含验证代码(prepared by the Poisson distribution matlab simulation code, including the verification code)
- 2009-08-27 10:56:47下载
- 积分:1
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ex_s_fun_vsfunc_m
The model of a discrete system with variable step size calculation is given in the file vsfunc.m. Considered S-function simulates the signal delay device. The delay time is determined by the input signal.
- 2012-04-28 21:16:52下载
- 积分:1
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circonv
循环位移函数,离散傅里叶函数必备工具之一。(Cyclic displacement function, discrete Fourier one of the tools necessary functions.)
- 2014-03-19 17:48:25下载
- 积分:1
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ABC0317
基本蜂群程序,实测可用~~~~~~~~~~~~~~~~~~~~~~~~~~~(basic ABC)
- 2012-05-08 09:07:55下载
- 积分:1