// launch.json

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

// task.json

{
    "tasks": [
      {
        "type": "cppbuild",
        "label": "C/C++: g++.exe build active file",
        "command": "C:/MinGW/bin/g++.exe",
        "args": ["-g", "${file}", "-o", "${fileDirname}\\${fileBasenameNoExtension}.exe"],
        "options": {
          "cwd": "${fileDirname}"
        },
        "problemMatcher": ["$gcc"],
        "group": {
          "kind": "build",
          "isDefault": true
        },
        "detail": "compiler: C:/MinGW/bin/g++.exe"
      }
    ],
    "version": "2.0.0"
  }