Visual studio code C++ error when running program

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Hello Everyone!;

I am learning C++ and I wanted to use my PC instead of a mac just for preference. When i try to run the code, I get this error message;

(This is my code)

#include <iostream>
using namespace std;

int main() {
  cout << "Hello World!";
  return 0;
}

(This is the error)

g++.exe: error: program.cpp: No such file or directory
g++.exe: fatal error: no input files

Any help would be appreciated;

Thank You

What I have tried:

I have watched every youtube video and tried every suggestion in the comments, yet nothing has seemed to fix it. Would anyone be able too help me out? If possible; a step by step method would be great. I have mingw, I have updated the path about 20 times and I still cant get it to run. When I run it from command prompt; It can't find my folder on the desktop to be able to run it.

Posted 18-Jul-20 3:33am

Member 14892814

Updated 12-Jan-21 2:29am

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OriginalGriff · Answer 1 · 2020-07-18T04:06:00

Solution 1

The error is trying really hard to tell you what the problem is: it can't find the file you told it to compile.

Have a look at the GCC options list and compare that to the command you are executing: Using the GNU Compiler Collection (GCC): Overall Options[^]

Posted 18-Jul-20 4:06am

OriginalGriff

Comments

Member 14892814 18-Jul-20 10:32am

How do i know what code to look for?

OriginalGriff 18-Jul-20 11:32am

Start at the beginning: what - exactly - do you do to try and compile your app?

Member 14892814 18-Jul-20 11:52am

Once i finished the code; i typed “g++ program.cpp”
Then a.out

Program.cpp is the name of my file.

OriginalGriff 18-Jul-20 12:08pm

And if you type "dir" do you see it in the current directory?

Member 14892814 18-Jul-20 12:12pm

When i type "dir" i see a lot of things come up; but not anything called "g++ program.cpp" . The only things i see come up related to coding is; .vscode. If there's a way i can send it to you in private would that be easier?

OriginalGriff 18-Jul-20 12:55pm

Which is why you don't get a compilation.
You either have to be in the right directory (i.e. the one with your source code in it) or tell the compiler where to look (i.e. provide a full or relative path to the actual file).

Member 14892814 18-Jul-20 13:00pm

How do i go about doing that? I added a path but i don’t know if i added it right.
the path i have is;
C:\MinGW\bin

I don't know what to put after it, nor how to figure out what to put after. I'm getting a fatal error in my command prompt which the video says is right...

Richard MacCutchan · Answer 2 · 2020-07-18T22:47:00

You need to save the source file from VSCode into program.cpp, in some local directory of your account. You then move to that directory and call g++ with its name. The way I do it is to open a terminal window in VSCode (Ctrl-') and move to my code directory in that window. I then save the source file into that directory and call the compiler from there. So the sequence is:
Ctrl-' -> opens the terminal window
cd mycodedirectory -> in the terminal window

Mouse click into the source code window and do File -> Save As, to save the program as program.cpp in mycodedirectory

mouse click into the terminal window and type the compile command:
g++ program.cpp
./a.out

Member 15022218 · Answer 3 · 2020-12-15T16:51:00

Solution 3

After trying a bunch of tutorials.
I just closed all the files I was trying to run and and gone File>Open Folder
Selected the folder where those files where... can't say I understood, but...problem solved

Posted 15-Dec-20 16:51pm

Member 15022218

Comments

Max Łuc 26-Jul-21 12:17pm

JESUS CHRIST THANK YOU DUDE, THAT WORKED
I was literally struggling over this for 2 days now, thanks a lot <3