I am calling a C++compiler from VS2017 . But getting an error.

Needs["CCompilerDriver`"]
CCompilers[]

hello = CreateExecutable["

    // Hello100.cpp : Defines the entry point for the console \
application.
    //

    #include " stdafx.h "
    #include <iostream>
    // i/o example
    // stringstreams

    #include <string>
    #include <sstream>
    using namespace std;

    int main()
    {
        string mystr;
        float price = 0;
        int quantity = 0;
        int next;
        cout << " Enter price : ";
        getline(cin, mystr);
        stringstream(mystr) >> price;
        cout << " Enter quantity : ";
        getline(cin, mystr);
        stringstream(mystr) >> quantity;
        cout << " Total price : " << price * quantity << endl;
        cin >> next;
        return 0;
       }

         ", "hellomyfirst"];

Import["!" <> QuoteFile[hellomyfirst], Text]

I am getting the following error

In[32]:= Import["!" <> QuoteFile[hellomyfirst], Text]

During evaluation of In[32]:= StringJoin::string: String expected at position 2 in !<>QuoteFile[hellomyfirst].

During evaluation of In[32]:= Import::chtype: First argument !<>QuoteFile[hellomyfirst] is not a valid file, directory, or URL specification.

Out[32]= $Failed

Why am not getting the output ? The code compiled in VIsual Studio ok.

Jose,

It looks like you need to escape the " and \ symbols (\" and \\)

This really puzzles me. I am runnig exacty your same code but returns errors in my computer.

In[1]:= Needs["CCompilerDriver`"]
CCompilers[]

Out[2]= {{"Name" -> "Visual Studio", 
  "Compiler" -> 
   CCompilerDriver`VisualStudioCompiler`VisualStudioCompiler, 
  "CompilerInstallation" -> 
   "C:\\Program Files (x86)\\Microsoft Visual \
Studio\\2017\\Community", 
  "CompilerName" -> Automatic}, {"Name" -> "Visual Studio", 
  "Compiler" -> 
   CCompilerDriver`VisualStudioCompiler`VisualStudioCompiler, 
  "CompilerInstallation" -> 
   "C:\\Program Files (x86)\\Microsoft Visual \
Studio\\2017\\BuildTools", "CompilerName" -> Automatic}}

In[3]:= hello = CreateExecutable["
        // Hello100.cpp : Defines the entry point for the console \
application.
        //#include \"stdafx.h\"
        #include <iostream>
        // i/o example
        // stringstreams
        #include <string>
        #include <sstream>
        using namespace std;
        int main()
        {
            string mystr;
            float price = 0;
            int quantity = 0;
            int next;
            cout << \" Enter price : \";
            //getline(cin, mystr);
            //stringstream(mystr) >> price;
            cout << \" Enter quantity : \";
            //getline(cin, mystr);
            //stringstream(mystr) >> quantity;
            cout << \" Total price : \" << price * quantity << endl;
            //cin >> next;
            return 0;
       }
    ", "hellomyfirst", Language -> "C++"]



During evaluation of In[3]:= CreateExecutable::cmperr: Compile error: C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.13.26128\include\crtdefs.h(10): fatal error C1083: Cannot open include file: 'corecrt.h': No such file or directory

Out[3]= $Failed

In[4]:= Import["!" <> QuoteFile[hello], "Text"]

During evaluation of In[4]:= StringJoin::string: String expected at position 2 in !<>QuoteFile[$Failed].

During evaluation of In[4]:= Import::chtype: First argument !<>QuoteFile[$Failed] is not a valid file, directory, or URL specification.

Out[4]= $Fail

I notice that you are using the the 2017 Profesional and the VS 2012. Is there anything reported from 2017 COmmunity that might limit this compilation?

I had to remove getline and stringstream lines since they were waiting for input and hanging the kernel. I would look at this post for some info on how to open a pipe as an alternative: https://stackoverflow.com/questions/6462275/mathematica-and-c-c-exchanging-data

I also needed to add Language -> "C++"

Import["!" <> QuoteFile[hellomyfirst], "Text"] (needs " around Text) seems to hang waiting for input.. It finishes executing if I remove the input code.