时间:2008-07-24 08:28:09   来源:论坛整理  作者:  编辑:chinaitzhe

我正在学习matlab与vc的混合编程。从网上下的一个程序没法编译成功。
程序如下：#include <iostream>
#include <math.h>
#include "engine.h"
//using namespace std;
int main()
{
　const int N = 50;
　double x[N],y[N];
　int j = 1;
　for (int i=0; i <N; i ) //计算数组x和y
　{
　　x[i] = (i 1);
　　y[i] = sin(x[i]) j * log(x[i]); //产生－之间的随机数赋给xx[i];
　　j *= -1;
　}
　Engine *ep; //定义Matlab引擎指针。
　if (!(ep=engOpen(NULL))) //测试是否启动Matlab引擎成功。
　{
　　cout < <"Can't start Matlab engine!" < <endl;
　　exit(1);
　}

　//定义mxArray，为行，N列的实数数组。
　mxArray *xx = mxCreateDoubleMatrix(1,N, mxREAL);
　mxArray *yy = mxCreateDoubleMatrix(1,N, mxREAL); //同上。

　memcpy(mxGetPr(xx), x, N*sizeof(double)); //将数组x复制到mxarray数组xx中。
　memcpy(mxGetPr(yy), y, N*sizeof(double)); //将数组x复制到mxarray数组yy中。

　engPutVariable(ep, "xx",xx); //将mxArray数组xx写入到Matlab工作空间，命名为xx。
　engPutVariable(ep, "yy",yy); //将mxArray数组yy写入到Matlab工作空间，命名为yy。

　//向Matlab引擎发送画图命令。plot为Matlab的画图函数，参见Matlab相关文档。
　engEvalString(ep, "plot(xx, yy); ");

　mxDestroyArray(xx); //销毁mxArray数组xx和yy。
　mxDestroyArray(yy);

　cout < <"Press any key to exit!" < <endl;
　cin.get();
　engClose(ep); //关闭Matlab引擎。
}
编译的错误提示是这样的：
------ Build started: Project: engine, Configuration: Debug Win32 ------
Compiling...
engine.cpp
e:\my documents\visual studio 2008\projects\engine\engine\engine.cpp(7) : error C3872: '0x3000': this character is not allowed in an identifier
e:\my documents\visual studio 2008\projects\engine\engine\engine.cpp(7) : error C2065: '　const' : undeclared identifier
e:\my documents\visual studio 2008\projects\engine\engine\engine.cpp(7) : error C2144: syntax error : 'int' should be preceded by ';'
e:\my documents\visual studio 2008\projects\engine\engine\engine.cpp(8) : error C3872: '0x3000': this character is not allowed in an identifier
e:\my documents\visual studio 2008\projects\engine\engine\engine.cpp(8) : error C2065: '　double' : undeclared identifier
e:\my documents\visual studio 2008\projects\engine\engine\engine.cpp(8) : error C2146: syntax error : missing ';' before identifier 'x'
e:\my documents\visual studio 2008\projects\engine\engine\engine.cpp(8) : error C2065: 'x' : undeclared identifier
e:\my documents\visual studio 2008\projects\engine\engine\engine.cpp(8) : error C2065: 'y' : undeclared identifier
e:\my documents\visual studio 2008\projects\engine\engine\engine.cpp(9) : error C3872: '0x3000': this character is not allowed in an identifier
e:\my documents\visual studio 2008\projects\engine\engine\engine.cpp(9) : error C2065: '　int' : undeclared identifier
e:\my documents\visual studio 2008\projects\engine\engine\engine.cpp(9) : error C2146: syntax error : missing ';' before identifier 'j'
e:\my documents\visual studio 2008\projects\engine\engine\engine.cpp(9) : error C2065: 'j' : undeclared identifier
e:\my documents\visual studio 2008\projects\engine\engine\engine.cpp(10) : error C3872: '0x3000': this character is not allowed in an identifier
e:\my documents\visual studio 2008\projects\engine\engine\engine.cpp(10) : error C2144: syntax error : 'int' should be preceded by ')'
e:\my documents\visual studio 2008\projects\engine\engine\engine.cpp(10) : error C2065: 'i' : undeclared identifier
e:\my documents\visual studio 2008\projects\engine\engine\engine.cpp(10) : error C3861: '　for': identifier not found
e:\my documents\visual studio 2008\projects\engine\engine\engine.cpp(10) : error C2065: 'i' : undeclared identifier
e:\my documents\visual studio 2008\projects\engine\engine\engine.cpp(10) : error C2059: syntax error : ')'
…………
e:\my documents\visual studio 2008\projects\engine\engine\engine.cpp(37) : error C2065: 'yy' : undeclared identifier
e:\my documents\visual studio 2008\projects\engine\engine\engine.cpp(37) : error C3861: '　mxDestroyArray': identifier not found
e:\my documents\visual studio 2008\projects\engine\engine\engine.cpp(39) : error C3872: '0x3000': this character is not allowed in an identifier
e:\my documents\visual studio 2008\projects\engine\engine\engine.cpp(39) : error C2065: '　cout' : undeclared identifier
e:\my documents\visual studio 2008\projects\engine\engine\engine.cpp(39) : fatal error C1003: error count exceeds 100; stopping compilation
Build log was saved at "file://D:\Program Files\MATLAB\R2007b\extern\include\BuildLog.htm"
engine - 102 error(s), 0 warning(s)
========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========
看错误的原因似乎是因为vc 2008编译器的问题。比如vc2008不支持const int N这样的定义句型吗？
谢谢大家
网友回复:应该是非法字符的问题

手工写代码，试试
网友回复:把代码中多余的空格删除一下
网友回复:果然是和多余的空格有关啊……
谢谢大家！
不过还是不能链接，看来这就是matlab的问题啦