Passing arguments to C++ programme for debugging in VSCode

Question

I want to debug a C++ project in VSCode (on a Mac, using either GDB or LLDB). The program itself takes command line arguments like

./prog -input cf file_x.txt

This works fine when starting a debugging session in GDB on the command line.

In VSCode, I tried to adapt launch.json to read like this (only relevant lines shown):

"program": "${workspaceRoot}/build/prog",
            "args": [
              "-input cf",
               "path_to/file_x.txt"
            ]

With this, I get @"Unknown option: \"-input cf\"\r\n" in the output and the process is not debugged; alternatively, I tried only one argument like so:

"program": "${workspaceRoot}/build/prog",
            "args": [
              "-input cf path_to/file_x.txt"
            ]

resulting in the same message. Have I missed something important?

score 25 · Accepted Answer · answered Aug 11 '16 at 11:25

25

Try it like this

"program": "${workspaceRoot}/build/prog",
            "args": [
              "-input",
              "cf",
              "path_to/file_x.txt"
            ]

answered Aug 11 '16 at 11:25

DAXaholic

33,312
6
76
74

1

I know this is old but this page will be updated with changes. https://code.visualstudio.com/docs/cpp/launch-json-reference#_args – Cody W Nov 10 '22 at 21:26

score 0 · Answer 2 · answered Oct 02 '22 at 03:36

0

In 2022, I just do :

 "args": [
    "your_arg1",
    "your_arg2"
 ]

(in launch.json of course)

answered Oct 02 '22 at 03:36

l_t_m_f

11
1

This is already said in the accepted answer, please avoid duplicating information – an inconspicuous semicolon Oct 06 '22 at 14:33
I was looking up how to this exact thing and found this page. The answer adds "-input". This is not needed in 2022, hence my answer. – l_t_m_f Oct 06 '22 at 15:50
if that is the case, then you should've commented on the original answer instead – an inconspicuous semicolon Oct 07 '22 at 09:21

Passing arguments to C++ programme for debugging in VSCode

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