Run C++ code in C#.NET

[Curious]

A business associate told me that I should be able to run C++ code in
C#.NET environment because C++ and C# belong to the same family.

He sent me the code below and asked me to run in C#.NET environment. I
got numerous compiling errors because #include stuff don't exist in
C#! Could anyone tell me if the code below should run in C#.NET?

-------------------------------------------------------------------------------------------------------------------------------

//#define NO_NEWIO

#include <iostream>

/// Include for CONNECT/C++
#include "stdafx.h"
#include "stdafx.cpp "
//#include "sconnect.h "

#include "c:\\data\\Splu s61 Includes\\EasyE ngineConnect.h"
#include "c:\\data\\Splu s61 Includes\\EasyE ngineConnect.cp p"

#include "c:\\data\\Splu s61 Includes\\EasyC haracter.h"
//#include "c:\\data\\Splu s61 Includes\\EasyC haracter.cpp"

#include "c:\\data\\Splu s61 Includes\\EasyM atrix.h"
//#include "c:\\data\\Splu s61 Includes\\EasyM atrix.cpp"

#include "c:\\data\\Splu s61 Includes\\EasyN umeric.h"
//#include "c:\\data\\Splu s61 Includes\\EasyN umeric.cpp"

using namespace std;

int main(int argc, char* argv[])
{

// Connect to S+
EasyEngineConne ct easyconnect_(ar gc, argv);
/// Create matrix 9x9 elem.
//EasyMatrix x;
//x.Create("matri x(1:9, nrow=9, ncol=9)", "x");
// Create matrix 9x9 elem.
//EasyMatrix y;
//y.Create("matri x(1:9, nrow=9, ncol=9)", "y");

CSPobject Y;
if (!Y.Create("vec tor(\"double\", 10.6)"))
{
cout << "Can not create vector." << endl;
return 1;
}

CSPobject X1;
if (!X1.Create("ve ctor(\"double\" ,8.6)"))
{
cout << "Can not create vector." << endl;
return 1;
}
CSPobject X2;
if (!X2.Create("ve ctor(\"double\" ,3.4)"))
{
cout << "Can not create vector." << endl;
return 1;
}

/// Connect to S+
// CSPengineConnec t engineConnect(a rgc, argv); //EasyEngineConne ct
easyconnect_(ar gc, argv);

/// Create matrix 9x9 elem.
CSPmatrix x;
x.Create("matri x(1:9, nrow=9, ncol=9)", "x");

CSPnumeric sx;
sx.Create("1:10 ","x");
CSPnumeric sy = sx * sx;
sy.Assign("y");
// engineConnect.S yncParseEval("z <-lm(y~x)");

/*
CSPengineConnec t engineConnect(a rgc, argv);

CSPobject x;
/// Create matrix 24x400 elem.
x.Create("matri x(1:223, nrow=24, ncol=400)");
//x.Create("matri x(1.2, nrow=, ncol=10)");
CSPobject y;
/// Create matrix 24x400 elem.
y.Create("matri x(231:1, nrow=24, ncol=400)");
/// Assign.
x.Assign("x");
y.Assign("y");
/// Call S+ regression "z<-x+y".
int iSuccess = engineConnect.S yncParseEval("z <-x+y");
/// Error.
if (iSuccess == 0)
{
cout << "Error, Can not call \"z<-(x+y)\"" << endl;
return 1;
}
CSPmatrix z(engineConnect .get("z"));
if (!z.IsValid())
{
cout << "Error, Can not search object z" << endl;
}
/// Print.
for (int i = 1; i <= 5;i++); //z.GetNRow(); ++i)
{
for (int j = 1; j <= z.GetNCol(); ++j)
{
cout << (double)z(i, j) << " ";
}
cout << endl;
}


/*
//Create the connection to S-PLUS
CSPengineConnec t engineConnect(a rgc, argv);
/// Create vector 24.
CSPobject A_vector;
if (!A_vector.Crea te("vector(\"do uble\",10)"))
{
cout << "Can not create vector." << endl;
return 1;
}
CSPobject B_matrix;
if (!B_matrix.Crea te("matrix(1.2 , nrow=10, ncol=10)"))
{
cout << "Can not create matrix." << endl;
return 1;
}
/// C_matrix = B_matrix + A_vector.
CSPmatrix C_matrix(B_matr ix + A_vector) ;
if (C_matrix == NULL)
{
cout << "Can not create matrix." << endl;
}
*/

/*
CSPnumeric sx;
sx.Create("1:10 ","x");
CSPnumeric sy = sx * sx;
sy.Assign("y");
engineConnect.S yncParseEval("z <-lm(y~x)");

*/

/*
/// Print C_matrix.
cout << "Print C_matrix = B_matrix + A_vector." << endl << endl;
for (int i = 1; i <= C_matrix.nrow() ; ++i)
{
for (int j = 1; j <= C_matrix.ncol() ; ++j)
{
cout << (double)C_matri x(i,j) << " "; //< Out to console.
}
cout << endl;
}

cout << endl << endl;

getchar();

/// Call procedure S+.

CSPcharacter returnObj;
/// Create a integer vector with one element
/// representing one argument to pass to function 'objects'
CSPinteger args("1");
/// Create a CSPcall object
CSPcall sCall;
/// Call function S+ (objects()).
cout << "Call function S+ (objects(1))... ." << endl << endl;
sCall.Create("o bjects", args);
/// Call.
returnObj = sCall.Eval(); // objects(1)
if (returnObj == NULL)
{
cout << "Function objects S+ failed" << endl;
return 1;
}

/// Get quantity.
int quantity = returnObj.lengt h();
cout << "Quantity objects : " << quantity << endl;
/// Print objects.
for (i = 0; i < quantity; ++i)
{
cout << " [ " << i+1 << " ] " << (char *)returnObj[i] << endl;
}
*/

/*
//Create the connection to S-PLUS
g_engineConnect .Create( argc, argv);

//Create S object with name "x" in the current database.
//Same as x<-1:10 at the command line.
CSPnumeric sx;
sx.Create("1:10 ","x");

//Squaring sx, which is the same as S expression sy <- x*x in a local
frame,
//but here we set it to local C++ variable sy.

CSPnumeric sy = sx * sx;

// Assign the result as S object with name "y" in the current
database.
sy.Assign("y");

//Evaluate z<-lm(y~x)
g_engineConnect .SyncParseEval( "z<-lm(y~x)");

maybe ------------------- CSPobject Eval ("z<-lm(y~x)");
//second example
CSPevaluator s;

CSPcharacter message("'hello '");
message.Print() ;

//CSPmatrix M("matrix(1:4,r now=2)");
//M.Print();
*/

printf("Normal Termination\n") ;
return 0;
}

[Family Tree Mike]

If your function in C++ is (char * a, s_object * b, long c), then your
declare statement should be (string a, IntPtr b, int c).
"Curious" <fi********@yah oo.comwrote in message
news:a9******** *************** ***********@q30 g2000prq.google groups.com...
On Nov 3, 10:23 am, "Family Tree Mike"
<FamilyTreeM... @ThisOldHouse.c omwrote:

That is a very different question than you started. Yes, you can compile a
dll and call it from c#. http://www.pinvoke.net/has examples on how to
call windows api dlls. You will do something similar with your associates
dll.

Your associate must be "fun" to work with :(.

"Curious" <fir5tsi...@yah oo.comwrote in message

news:16******** *************** ***********@g17 g2000prg.google groups.com...

My business associate insists that he can run C++ functions from C#
code.

Will it be possible to compile C++ code (managed code) into a .dll,
and reference the .dll from C#.NET code, and call C++ code in the
library

Family Tree Mike,

How would this work? The parameter types in C++ methods are different
from the data types in C#. For instance, I have the following
parameter types in C++:

char *
s_object *
long

What types shall I define for the parameters in C# to be passed to the
C++ so that they'll be recognized as types char *, s_object *, and
long?