mjhjmtu

When I try to create a C/C++ source file

touch test.cpp

Usually it will generate a file which type is C source code file. But today I got a plain text file.

And I write a simple program in it like:

#include <stdio.h>
int main()
 printf("hello");

Then I use G++ to compile it:

g++ test.cpp -o test

However, I got a sharedlib file instead of executable file.

And I can run the sharedlib file and get the correct ouput:

./test
hello

In the past, I can directly create a C++ source code file and this file type is easy to edit in vscode. But the plain text file is not comfortable for me.

So the two questions really bother me:

1. why my Ubuntu can not recognize C/C++ source code file correctly?


2. why I get a sharedlib file by using default g++ command?

The command touch test.cpp creates a plain text file in Ubuntu 18.04 by default as it should. Next try opening test.cpp in Gedit text editor and pasting the following code as you did:

#include <stdio.h>
int main()
 printf("hello");

Save the file. Now look at the right side of the bottom panel in Gedit and you will see that the file type has changed to C++. Right-click test.cpp and select Properties and you will see that the Type has changed to C++ source code (text/x-c++src). You should have no problem running test.cpp which now has type C++ source code (text/x-c++src) in Visual Studio Code.

If you want to get an executable/x-sharedlib file (which has a lavender diamond-shaped icon with two gears in Ubuntu 18.04) instead of an application/x-sharedlib file, then you need to create a new project for the test.cpp source code in Visual Studio Code before running it.