VSCode调试C程序故障求助：无法断点/变量不显示

已安装微软C/C++ Intellisense v1.16.3扩展，调试C程序时遇到两个问题：

1. 调试时“Variables”面板无法显示变量
2. 无法使用断点，点击“Debug C/C++ File”后程序卡顿并退出

操作流程 #

• 终端>运行生成任务
• 在.c源文件中设置断点
• 运行“Debug C/C++ File”

测试代码（input_validation.c） #

// input_validation.c
#include <stdio.h>

int main(void)
{
    int num = 0;
    printf("Enter a number between 1-10: ");
    scanf("%d", &num);

    if (num > 0 && num <= 10)
        printf("Input accepted!\n");
    else
        printf("Error: number must be between 1-10.\n");

    return 0;
}

.vscode配置文件 #

1. launch.json #

{
    "configurations": [
        {
            "name": "C/C++: gcc.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:\\cygwin64\\bin\\gdb.exe",
            "setupCommands": [
                {
                    "description": "Enable pretty-printing for gdb",
                    "text": "-enable-pretty-printing",
                    "ignoreFailures": true
                },
                {
                    "description": "Set Disassembly Flavor to Intel",
                    "text": "-gdb-set disassembly-flavor intel",
                    "ignoreFailures": true
                }
            ],
            "preLaunchTask": "C/C++: gcc.exe build active file"
        }
    ],
    "version": "2.0.0"
}

2. tasks.json #

{
    "tasks": [
        {
            "type": "cppbuild",
            "label": "C/C++: gcc.exe build active file",
            "command": "C:\\cygwin64\\bin\\gcc.exe",
            "args": [
                "-fdiagnostics-color=always",
                "-g",
                "${file}",
                "-o",
                "${fileDirname}\\${fileBasenameNoExtension}.exe"
            ],
            "options": {
                "cwd": "${fileDirname}"
            },
            "problemMatcher": [
                "$gcc"
            ],
            "group": {
                "kind": "build",
                "isDefault": true
            },
            "detail": "Task generated by Debugger."
        }
    ],
    "version": "2.0.0"
}

3. c_cpp_properties.json #

{
    "configurations": [
        {
            "name": "Win32",
            "includePath": [
                "${workspaceFolder}/**"
            ],
            "defines": [
                "_DEBUG",
                "UNICODE",
                "_UNICODE"
            ],
            "compilerPath": "C:\\cygwin64\\bin\\gcc.exe",
            "cStandard": "c99",
            "intelliSenseMode": "${default}"
        }
    ],
    "version": 4
}

使用的工具版本（Cygwin环境） #

PS C:\Users\leeyo\Desktop\Udemy\C> gdb --version
GNU gdb (GDB) (Cygwin 12.1-1) 12.1
Copyright (C) 2022 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
PS C:\Users\leeyo\Desktop\Udemy\C> gcc --version
gcc (GCC) 11.4.0
Copyright (C) 2021 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO 
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

PS C:\Users\leeyo\Desktop\Udemy\C> which gcc
/usr/bin/gcc
PS C:\Users\leeyo\Desktop\Udemy\C> which gdb
/usr/bin/gdb

调试输出 #

调试控制台输出截图：

期望与实际表现 #

期望 #

• 能够设置断点
• 能够单步执行代码
• 能够在“运行和调试”视图中查看变量

实际表现 #

• 以上功能均无法正常工作

内容的提问来源于stack exchange，提问作者togomi