g++ build and debug active file. is not appearing in popup menu

[ats1999]

C++ files are running very well

gcc (Ubuntu 9.3.0-17ubuntu1~20.04) 9.3.0
Copyright (C) 2019 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

// c_cpp_properties.json
{
    "configurations": [
      {
        "name": "Linux",
        "includePath": ["${workspaceFolder}/**"],
        "defines": [],
        "compilerPath": "/usr/bin/gcc",
        "cStandard": "c11",
        "cppStandard": "c++17",
        "intelliSenseMode": "clang-x64"
      }
    ],
    "version": 4
  }

// launch.json
{
  "version": "0.2.0",
  "configurations": [
    {
      "name": "g++ build and debug active file",
      "type": "cppdbg",
      "request": "launch",
      "program": "${fileDirname}/${fileBasenameNoExtension}",
      "args": [],
      "stopAtEntry": true,
      "cwd": "${workspaceFolder}",
      "environment": [],
      "externalConsole": false,
      "MIMode": "gdb",
      "setupCommands": [
        {
          "description": "Enable pretty-printing for gdb",
          "text": "-enable-pretty-printing",
          "ignoreFailures": true
        }
      ],
      "preLaunchTask": "g++ build active file",
      "miDebuggerPath": "/usr/bin/gdb"
    }
  ]
}

When i press f5

There is no g++ build and debug active file

[sean-mcmanus]

Do you have gdb installed? Does it exist at /usr/bin/gdb?

[ats1999]

rahul@rahul:~$ which -a gdb
/usr/bin/gdb
/bin/gdb

[ats1999]

rahul@rahul:~$ whereis -b gdb
gdb: /usr/bin/gdb /etc/gdb /usr/share/gdb

[sean-mcmanus]

Oh, you need a tasks.json. c_cpp_properties.json isn't used for building. If you delete your launch.json and do F5 again it should generate your tasks.json and launch.json. You should see