gistfile1.txt

tasks.json:
   {
     "version": "2.0.0",
     "tasks": [
       {
         "label": "build",
         "type": "shell",
         "command": "g++",
         "args": [
           "-g",
           "${file}",
           "-o",
           "${fileDirname}/${fileBasenameNoExtension}"
         ],
         "group": {
           "kind": "build",
           "isDefault": true
         },
         "problemMatcher": ["$gcc"],
         "detail": "Generated task by G++"
       }
     ]
   }

launch.json
   {
     "version": "0.2.0",
     "configurations": [
       {
         "name": "C++ Debug",
         "type": "cppdbg",
         "request": "launch",
         "program": "${workspaceFolder}/${fileBasenameNoExtension}",
         "args": [],
         "stopAtEntry": false,
         "cwd": "${workspaceFolder}",
         "environment": [],
         "externalConsole": true,
         "MIMode": "gdb",
         "miDebuggerPath": "gdb",
         "setupCommands": [
           {
             "description": "Enable pretty-printing for gdb",
             "text": "-enable-pretty-printing",
             "ignoreFailures": true
           }
         ],
         "preLaunchTask": "build",
         "internalConsoleOptions": "neverOpen"
       }
     ]
   }