VSCode tasks.json for C/C++ programming on Ming-w64. See comments for more detail.

tasks.json

{
	"version": "2.0.0",
	"tasks": [
		{
			"type": "shell",
			"label": "C/C++: g++.exe build active file",
			"command": "${env:MSYS2_ROOT}\\mingw64\\bin\\g++.exe",
			"args": [
				"-g",
				"${file}",
				"-o",
				"${fileDirname}\\${fileBasenameNoExtension}.exe"
			],
			"options": {
				"cwd": "${workspaceFolder}",
				"env": {
					"PATH": "${env:MSYS2_ROOT}\\mingw64\\bin;${env:PATH}",
				}
			},
			"problemMatcher": [
				"$gcc"
			],
			"group": {
				"kind": "build",
				"isDefault": true
			}
		}
	]
}

Description: For security reason, I don't have msys2 binaries on my %PATH%, but I want to make it works while I'm having C/C++ coding session without have to change the Environment Variable every single time.

1. Please pay attention that I have %MSYS2_ROOT% defined on Windows User's Environment Variable. It points to root of msys2 (in my case it's C:\Users\hexat\scoop\apps\msys2\current). You might want to declare the variable if not defined yet OR substitute it with full path. Pay attention on env.PATH too.

2. On this line, it perpend %PATH% with mingw64 binaries.