1、先参考下面的文章安装软件

vscode配置c/c++环境

2、按照上述安装后，运行程序时无输出，本来应该打印"hello word\n"

（1）、命令gcc where

先查询系统有几个gcc，找到对应的路径

（2）、gcc-v命令

查询gcc的版本，默认生效的是C:\Strawberry下面的gcc，我安装的mingw在D盘。

即使在环境变量中把mingw的路径放到最前面，默认生效的还是C:\Strawberry下面的gcc。

（3）、解决办法一、删除环境变量中的Strawberry路径名

然而并没有什么效果

（4）、解决办法二、检查launch.json、tasks.json里面配置的编译器路径

• tasks.json内容如下：

{
    "tasks": [
        {
            "type": "cppbuild",
            "label": "C/C++: gcc.exe 生成活动文件",
            //"command": "C:\\Strawberry\\c\\bin\\gcc.exe",  //原来的路径
            "command": "D:\\Program Files\\mingw64\\bin\\gcc.exe",  //修改后的路径
            "args": [
                "-fdiagnostics-color=always",
                "-g",
                "${file}",
                "-o",
                "${fileDirname}\\${fileBasenameNoExtension}.exe",
            ],
            "options": {
                "cwd": "${fileDirname}"
            },
            "problemMatcher": [
                "$gcc"
            ],
            "group": {
                "kind": "build",
                "isDefault": true
            },
            "detail": "调试器生成的任务。"
        }
    ],
    "version": "2.0.0"
}

• launch.json内容如下：

{
    "configurations": [
        {
            "name": "C/C++: gcc.exe 构建和调试活动文件",
            "type": "cppdbg",
            "request": "launch",
            "program": "${fileDirname}\\${fileBasenameNoExtension}.exe",
            "args": [],
            "stopAtEntry": false,
            "cwd": "${fileDirname}",
            "environment": [],
            "externalConsole": false,
            "MIMode": "gdb",
            //"miDebuggerPath": "C:\\Strawberry\\c\\bin\\gcc.exe",  //原来的路径
            "miDebuggerPath": "D:\\Program Files\\mingw64\\bin\\gdb.exe", //修改后的路径
            "setupCommands": [
                {
                    "description": "为 gdb 启用整齐打印",
                    "text": "-enable-pretty-printing",
                    "ignoreFailures": true
                },
                {
                    "description": "将反汇编风格设置为 Intel",
                    "text": "-gdb-set disassembly-flavor intel",
                    "ignoreFailures": true
                }
            ],
            "preLaunchTask": "C/C++: gcc.exe 生成活动文件"
        }
    ],
    "version": "2.0.0"
}

（5）、调用pthread函数时，编译通过，运行不通过

{
    "tasks": [
        {
            "type": "cppbuild",
            "label": "C/C++: gcc.exe 生成活动文件",
            "command": "D:\\Program Files\\mingw64\\bin\\gcc.exe",
            "args": [
                "-fdiagnostics-color=always",
                "-g",
                "${file}",
                "-o",
                "${fileDirname}\\${fileBasenameNoExtension}.exe",
                "-lpthread"  //加上pthread的编译选项
            ],
            "options": {
                "cwd": "${fileDirname}"
            },
            "problemMatcher": [
                "$gcc"
            ],
            "group": {
                "kind": "build",
                "isDefault": true
            },
            "detail": "调试器生成的任务。"
        }
    ],
    "version": "2.0.0"
}