I want it to run just in the cmd but all I get is this white window. Any help?
Code:
//
// pch.cpp
// Include the standard header and generate the precompiled header.
//
#include "pch.h"
#include <iostream>
using namespace std;
int main() {
cout << "test";
return 0;
}
Visual Studio provides different kinds of project you can start with.
You are looking for "Win32 Console Application" which already provides the standard configuration that employs a console.
You can also use an empty C++ project, but then you must find all the required settings that enable the console environment.
Related
First, briefly,
My computer with Window11OS showed this console window.
?? ? ?? C++????
C:\Users\MYNAME\source\repos\20220816ConsoleApplication1\x64\Debug\20220816ConsoleApplication1.exe (process 17604) exited with code 0.
and quetionmarks are NOT what I intended.
I think I need to use intentionally UNICODE here.
But I don't know how to do, I failed once; I'll explain later.
So, this is the code that I want to fix. And I'm using Visual Studio as Windows Console Application(C++/WInRT) for this solution-file.
#include <iostream>
int main()
{
using namespace std;
/*표준 출력 스트림으로 문장을 출력함
근데 왜 한글이 물음표로 나올까*/
cout << "나의 첫 번째 C++프로그램" << endl;
return 0;
}
But VS's error-list showed me the below.
Warning C4566 character represented by universal-character-name '\uB098' cannot be represented in the current code page (1252)
What property I've changed to build successfully was the below
VS's upper menu > Project > Properties(the lowest item) > Configuration Properties > C/C++ > Precompiled Headers > Precompiled Header : Use(/Yu) --I CHANGED IT TO-->> Not Using Precompiled Headers
I also had tried to change "Language" property just like the screenshot below, but I had failed to build at all, even question-marks hadn't shown.
What I had tried to show Hangeul-language instead of question-marks but failed.
On Windows, use the following to set the console stdout to Unicode mode. Save the file with UTF-8 w/ BOM encoding, or UTF-8 without BOM and compile with the /utf-8 switch. You Windows needs to support the Korean language or at least use a console font that supports Korean characters such as NSimSun.
test.cpp: compiled with "cl /W4 /EHsc /utf-8 test.cpp"
#include <iostream>
#include <io.h>
#include <fcntl.h>
int main()
{
using namespace std;
_setmode(_fileno(stdout), _O_U16TEXT);
wcout << L"나의 첫 번째 C++프로그램" << endl;
return 0;
}
Output (cut/paste from cmd window):
나의 첫 번째 C++프로그램
I am fairly new to using Visual Studio. Currently I am using Visual Studio 2015 version. Currently when I set up a new C++ console application project (with Precompiled header off or on) it displays the following:
// Name of project.cpp : Defines the entry point for the console application.
//
#include "stdafx.h"
int main()
{
return 0;
}
Every time I create a new project I have to waste my time entering in my header information and comments. I would like it to look like this every time I create a new C++ console application project.
// *********************************************************************
// Name:
// Description:
// Date:
// Class Section:
// Title:
// *********************************************************************
//Heading information
#include <iostream>
#include "stdlib.h"
#include "stdafx.h"
using namespace std;
//Main function
int main()
{
//Pause system and end main function
system("pause");
return 0;
}
Is it possible to set up Visual Studio 2015 to display the code above every time I create a new project? Thanks
Create a new console application.
Edit the file to be as you want it in the new one.
Select "Export Template..." in the "File" menu.
Walk through the wizard (choose a name for your new template, etc.)
Be sure the "Automatically import the template into Visual Studio" is checked.
Restart VS
Select "New Project"
Select "Visual C++" in the tree control on the left
Select your new template in the list in the middle
The usual new-project stuff (name and location for the project, etc.)
[Note: As I'm writing this, I'm looking at it in VS 2013. I don't recall it's changing in VS 2015, but it's possible.]
I have an issue with Visual Studio's 2012. I am also using "Sams Teach Yourself C++ in One Hour a day, 7th edition".
After using google to find the "best" compilers for C++, Visual Studios seemed to be the tool of choice.
So I downloaded and installed Visual Studios 2012. The very first lesson in the book is (and tells me to run it as a console app by going to File > New > Project >Visual C++ > Win32 > Console Application )
#include <iostream>
int main()
{
std::cout << “Hello World!” << std::endl;
return 0;
}
which doesnt work, at all. it outputs an error message similiar to the following:
1>c:\users\nik\documents\visual studio
2012\projects\consoleapplication4\consoleapplication4\consoleapplication4.cpp(8):
error C2065: '“Hello' : undeclared identifier
1> Generating Code...
========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped =========="
(there is more lines similiar to the first, but its rather long)
However, after googling and watching a video on youtube the following code works (using File > New > Project >Visual C++ > General > Empty Project )
#include <iostream>
#include "conio.h"
using namespace std;
int main() {
cout << "Hello Nik" << endl;
_getch();
return 0;
}
Does Visual Studio's 2012 have a C++ compiler? or does it just have a visual c++ compiler (if thats even the issue, only reason I think it could be is I can see templates for Visual C++ but none for c++ by itself...) or do I need to download Visual Studio Express to download native c++ ??
Any help would be greatly appreciated as I am feeling some-what out of my depth here...
Thanks.
Besides aphostrophes you may need to disable precompiler headers in project properties.
They are turned on by default in VS2012. If you are not familiar with precompiled headers turn them off.
Right click on project (not solution)
Click properties.
Expand "Configuration properties"
Expand "C/C++"
Choose "Precompiled headers"
Set "Precompiled header" to "Not Using Precompiled Headers"
More information about precompiled headers and stdafx.h file at Wikipedia
The apostrophes you used are wrong:
“Hello World!”
should be
"Hello World!"
Notice even how SO recognizes the difference. You should at least type the code you see in the book instead of copying and pasting it. ;-)
The Win32 console application is actually quite different from the empty project. Win32 utilize a message (input) queue which you poll in a loop and your program respectively utilizes the Win32 API and performs certain operations.
The empty project is a bit less dependent on Win32 or anything that Windows provides in terms of API unless you make it dependent on it. This would be the simples hello world app in you empty project:
#include <iostream>
using namespace std;
int main()
{
cout << "Hello World" << endl;
return 0;
}
Just try this::
"Hello World!" instead of “Hello World!”.
The difference between
“Hello World!” and
"Hello Nik" is the apostrophe.
Aslo is the error persists than just check visual c++ library linker.
There is aslo definitely no need for conio.h
If your going to copy from a book at least copy it correctly.
Using namespace std;
would be pretty smart in this case.
In order to fix your error you have to delete std:: of std::cout and std::endl, and write using namespace std; underneath #include iostream and and change “ ” with " ".
#include <iostream>
using namespace std;
int main()
{
cout <<"Hello World" << endl;
return 0;
}
In Visual studio 2012
file>new projet>visual c++ (Project win32)>application settings(application console+Not Using Precompiled)>in right box in you Project (right click, add>new element>file c++).
I am new to C++. I just started! I tried a code on Visual C++ 2010 Express version, but I got the following code error message.
------ Build started: Project: abc, Configuration: Debug Win32 ------
ugo.cpp
c:\users\castle\documents\visual studio 2010\projects\abc\abc\ugo.cpp(3): fatal error C1083: Cannot open include file: 'iostream': No such file or directory
========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========
This is the code:
// first.cpp -- displays a message
#include <iostream> // A PREPROCESSOR directive
int main(void) // Function header
{ // Start of a function body
using namespace std;
cout << "Come up and C++ me sometime.\n"; // Message
// Start a new line
cout << "Here is the total: 1000.00\n";
cout << "Here we go!\n";
return 0;
}
Replace
#include <iostream.h>
with
using namespace std;
#include <iostream>
Some things that you should check:
Check the include folder in your version of Visual Studio (in "C:\Program Files\Microsoft Visual Studio xx.x\VC\include", check for the file which you are including, iostream, make sure it's there).
Check your projects Include Directories in <Project Name> → Properties → Configuration Properties → VC++ Directories → Include Directories (it should look like this: $(VCInstallDir)include;$(VCInstallDir)atlmfc\include;$(WindowsSdkDir)include;$(FrameworkSDKDir)\include;)
Make sure that you selected the correct project for this code
(menu File → New → Project → Visual C++ → Win32 Console Application)
Make sure that you don't have <iostream.h> anywhere in your code files, Visual Studio doesn't support that (in the same project, check your other code files, .cpp and .h files for <iostream.h> and remove it).
Make sure that you don't have more than one main() function in your project code files (*in the same project, check your other code files, .cpp and .h files for the* main()` function and remove it or replace it with another name).
Some things you could try building with:
Exclude using namespace std; from your main() function and put it after the include directive.
Use std::cout without using namespace std;.
I had this exact same problem in Visual Studio 2015. It looks like as of Visual Studio 2010 and later you need to include #include "stdafx.h" in all your projects.
#include "stdafx.h"
#include <iostream>
using namespace std;
The above worked for me. The below did not:
#include <iostream>
using namespace std;
This also failed:
#include <iostream>
using namespace std;
#include "stdafx.h"
You are more than likely missing $(IncludePath) within Properties → VC++ Directories → Include Directories.
Adding this should make iostream and others visible again. You probably deleted it by mistake while setting up your program.
If your include directories are referenced correctly in the VC++ project property sheet → Configuration Properties → VC++ directories → Include directories, the path is referenced in the macro $(VC_IncludePath).
In my Visual Studio 2015 this evaluates to:
"C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include"
using namespace std;
#include <iostream>
That did it for me.
It is possible that your compiler and the resources installed around it were somehow incomplete. I recommend re-installing your compiler: it should work after that.
I got this error when I created an 'Empty' console application in Visual Studio 2015. I recreated the application, leaving the 'Empty' box unchecked. It added all of the necessary libraries.
Make sure you have Desktop Development with C++ installed.
I was experiencing the same problem, because I only had Universal Windows Platform Development installed.
Microsoft Visual Studio is funny. When you're using the installer, you must checkbox a lot of options to bypass the .NET framework (somewhat) to make more C++ instead of C# applications, such as the CLR options under desktop development... in the Visual Studio installer.... the difference is the C++ Win32 console project or a C++ CLR console project.
So what’s the difference? Well, I'm not going to list all of the files CLR includes, but since most good C++ kernels are in Linux... So CLR allows you to bypass a lot of the Windows .NET framework because Visual Studio was really meant for you to make applications in C#.
Here’s a C++ Win32 console project!
#include "stdafx.h"
#include <iostream>
using namespace std;
int main()
{
cout << "Hello, World!" << endl;
return 0;
}
Now here’s a C++ CLR console project!
#include "stdafx.h"
using namespace System;
int main(array<System::String ^> ^args)
{
Console::WriteLine("Hello, World!");
return 0;
}
Both programs do the same thing .... the CLR just looks more frameworked class overloading methodology, so Microsoft can great its own vast library you should familiarize yourself with if so inclined.
Keywords (C++)
Other things you'll learn from debugging to add for error avoidance:
#ifdef _MRC_VER
#define _CRT_SECURE_NO_WARNINGS
#endif
If you created an environment variable with the name IncludePath, try renaming it to something else.
This name will override $(IncludePath) inside project properties.
Quick fix for small programs:
Add: #include <cstdlib>
In my case, my Visual Studio 2015 installed without selecting C++ package, and Visual Studio 2017 is installed with the C++ package. If I use Visual Studio 2015, opening a C++ project will show this error, and using Visual Studio 2017 will be no error.
I had this problem too. I used this code (before main();) in Visual Studio 2022, and it turned OK:
#include "pch.h"
#include <iostream>
using namespace std;
using namespace winrt;
using namespace Windows::Foundation;
In my case, the error occurred when I created a file in VS Code, without giving the .cpp extension. It resolved when I renamed it with the .cpp.
// first.cpp -- displays a message
#include <iostream> // a PREPROCESSOR directive
using namesapce std;
int main() // function header
{ // start of a function body
///using namespace std;
cout << "Come up and C++ me sometime.\n"; // message
// start a new line
cout << "Here is the total: 1000.00\n";
cout << "Here we go!\n";
return 0;
}
I have installed visual studio express 2010 c++. However when trying to follow a beginners book and make the hello world program, visual studio opens up a project with this in it:
#include "stdafx.h"
using namespace System;
int main(array<System::String ^> ^args)
{
Console::WriteLine(L"Hello World");
return 0;
}
The thing is, this looks nothing like the c++ in the book i have just started reading (C++ Without Fear). In fact, if i type 'cout',even after entering using namespace std, cout is not found.
This is the books example:
#include "stdafx.h"
#include <iostream>
using namespace std;
int main() {
cout << "Never fear, C++ is here!";
return 0;
}
Am i missing something here?
Create Windows (or Win32, don't remember exactly) C++ Console Application project, don't select C++/CLI project type.
C++/CLI is very special language, which is used only for interoperability between managed and unmanaged code. It is better to forget about C+++/CLI at this stage...
As Alex said start with C++ Win32 console project, but select empty project so that the IDE don't fill things out automatically! Go to Source Files in your Solution Explorer, right click on it and add new item and choose C++ file (call it main.cpp for example).
At that point you should be ready to go.
Try this sample code that I prepared for you...
#include <iostream>
using namespace std;
int main(char *argv[], int argc) {
cout << "Hello World!" << endl;
return 0;
}
It should print out Hello World! in the console.
You want to start with a Visual C++ Win32 Console Application.
If you want to create your own files completely (i.e. no stub file with a main defined), you can check "Empty Project" in the options of the Win32 Application Wizard.
This is not C++. This is so called "managed" C++. Basically, a totally different language by Microsoft that is compatible with their .NET platform. For example, you can mix C# code and managed C++ code in single binary. This technology is very Microsoft specific and is not portable to any other compiler/OS (even Mono, which is C# for Linux, doesn't have it). See Managed Extensions for C++ for more details.