VSC 写C++ 自定义头文件 函数用不了

所以你是怎么编译的

{ "version": "2.0.0",
"command": "g++",
"args": ["-g","*.cpp","-o","${file}.exe"], // 编译命令参数
"problemMatcher": {
"owner": "cpp",
"fileLocation": ["relative", "${workspaceRoot}"],
"pattern": { "regexp": "^(.*):(\\d+):(\\d+):\\s+(warning|error):\\s+(.*)$",
"file": 1,
"line": 2,
"column": 3,
"severity": 4,
"message": 5
}
}
}
我的tasks.json文件，测试可以通过。