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Accepted
Lawrence Gimenez
Asked: 2012-05-26 19:17:46 +0800 CST

Compiling C++ inside a folder in Ubuntu 12.04

  • 772

I have some question about compiling .cpp inside a folder, it says

first.cpp No such file or directory

but when I run it in home it compiles. Any settings I might have left out? Thanks.

Here's the Terminal output (view it bigger): enter image description here

law@ubuntu:~$ ls
android-sdk   Downloads         Pictures        test        wallpapers
android-sdks  eclipse           Public          tomcat      workspace
Desktop       examples.desktop  sourcecodescpp  Ubuntu One
Documents     Music             Templates       Videos
law@ubuntu:~$ dir sourcecodescpp
first.cpp
law@ubuntu:~$ g++ first.cpp
g++: error: first.cpp: No such file or directory
g++: fatal error: no input files
compilation terminated.
law@ubuntu:~$ ./a/out
bash: ./a/out: No such file or directory
law@ubuntu:~$ ls
android-sdk   Downloads         Pictures        test        wallpapers
android-sdks  eclipse           Public          tomcat      workspace
Desktop       examples.desktop  sourcecodescpp  Ubuntu One
Documents     Music             Templates       Videos
law@ubuntu:~$ dir ls
dir: cannot access ls: No such file or directory
law@ubuntu:~$ ls
android-sdk   Downloads         Music           Templates   Videos
android-sdks  eclipse           Pictures        test        wallpapers
Desktop       examples.desktop  Public          tomcat      workspace
Documents     first.cpp         sourcecodescpp  Ubuntu One
law@ubuntu:~$ g++ first.cpp
law@ubuntu:~$ ./a.out
Hello World!law@ubuntu:~$ ^C
law@ubuntu:~$ ^C
law@ubuntu:~$
12.04

3 Answers

  1. Best Answer

    You were in your home folder (/home/law) when you issued the g++ first.cpp command. But first.cpp is located in the sourcecodescpp folder. To compile first.cpp, you must either enter the folder that contains it:

    cd sourcecodescpp

    (Then the output file will, by default, be created inside sourcecodescpp.)

    Or qualify its name with the name of the folder that contains it:

    g++ sourcecodescpp/first.cpp

    (Then the output file will, by default, be created inside your home folder.)

    • 5

  2. You need to move (change directory, or cd) into the sourcecodescpp dirctory first, to run/compile any files in there. For that please run

    cd sourcecodescpp

    from the Terminal and now you'll be in that directory.

    Now you can run

    g++ first.cpp

    to compile and

    ./a.out

    to run.

    • 2

  3. That's right, you can give full path to your cpp file to avoid such error.

    I think even following should work:

    g++ /home/yourdirectory/first.cpp
    • 1