怎样在VSCode中调试C++程序

#pragma once
#include <string>

class Gun
{
private:
    int _bullet_count;
    std::string _type;

public:
    Gun(std::string type)
    {
        this->_bullet_count = 0;
        this->_type = type;
    }

    void addBullet(int bullet_num);
    bool shoot();
};

#pragma once
#include <string>
#include "Gun.h"

class Solider
{
private:
    std::string _name;
    Gun *_ptr_gun;

public:
    Solider(std::string name);
    ~Solider();
    void addGun(Gun *ptr_gun);
    void addBullectToGun(int num);
    bool fire();
};

#include "Gun.h"
#include "iostream"
using namespace std;

void Gun::addBullet(int bullet_num)
{
    this->_bullet_count += bullet_num;
}

bool Gun::shoot()
{
    if (this->_bullet_count <= 0)
    {
        cout << "There is no bullet!" << endl;
        return false;
    }

    this->_bullet_count -= 1;
    cout << "shoot success" << endl;
    return true;
}

#include "Solider.h"

Solider::Solider(std::string name)
{
    this->_name = name;
    this->_ptr_gun = nullptr;
}

void Solider::addGun(Gun *ptr_gun)
{
    this->_ptr_gun = ptr_gun;
}

void Solider::addBullectToGun(int num)
{
    this->_ptr_gun->addBullet(num);
}

bool Solider::fire()
{
    return this->_ptr_gun->shoot();
}

Solider::~Solider()
{
    if (this->_ptr_gun == nullptr)
    {
        return;
    }
    delete this->_ptr_gun;
    this->_ptr_gun = nullptr;
}

#include "Gun.h"
#include "Solider.h"

void test()
{
    Solider sanduo("xusanduo");
    sanduo.addGun(new Gun("AK47"));
    sanduo.addBullectToGun(20);
    sanduo.fire();
}

int main(int argc, char const *argv[])
{
    test();
    return 0;
}

# 指定cmake版本
cmake_minimum_required(VERSION 3.0)
# 设置项目名称
project(SOLIDERFIRE)
# 添加编译参数
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -g -O2 -Wall")
# 设置代码构建级别为 Debug 方式
set(CMAKE_BUILD_TYPE Debug)
# 包含目录
include_directories(${CMAKE_SOURCE_DIR}/include)
# 编译
add_executable(a.out main.cpp src/Gun.cpp src/Solider.cpp)

{
    // Use IntelliSense to learn about possible attributes.
    // Hover to view descriptions of existing attributes.
    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
    "version": "0.2.0",
    "configurations": [
        {
            "name": "(gdb) 启动",
            "type": "cppdbg",
            "request": "launch",
            "program": "输入程序名称，例如 ${workspaceFolder}/a.out",
            "args": [],
            "stopAtEntry": false,
            "cwd": "${fileDirname}",
            "environment": [],
            "externalConsole": false,
            "MIMode": "gdb",
            "setupCommands": [
                {
                    "description": "为 gdb 启用整齐打印",
                    "text": "-enable-pretty-printing",
                    "ignoreFailures": true
                }
            ]
        }
    ]
}

{
    // See https://go.microsoft.com/fwlink/?LinkId=733558
    // for the documentation about the tasks.json format
    "version": "2.0.0",
    "tasks": [
        {
            "label": "echo",
            "type": "shell",
            "command": "echo Hello"
        }
    ]
}

{
    // See https://go.microsoft.com/fwlink/?LinkId=733558
    // for the documentation about the tasks.json format
    "version": "2.0.0",
    "options": {
        "cwd": "${workspaceFolder}/build"
    },
    "tasks": [
        {
            "type": "shell",
            "label": "cmake",
            "command": "cmake",
            "args": [
                ".."
            ]
        },
        {
            "label": "make",
            "group": {
                "kind": "build",
                "isDefault": true
            },
            "command": "make",
            "args": []
        },
        {
            "label": "build",
            "dependsOrder": "sequence",
            "dependsOn": [
                "cmake",
                "make"
            ]
        }
    ],
}

{
    // Use IntelliSense to learn about possible attributes.
    // Hover to view descriptions of existing attributes.
    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
    "version": "0.2.0",
    "configurations": [
        {
            "name": "(gdb) 启动",
            "type": "cppdbg",
            "request": "launch",
            "program": "${workspaceFolder}/build/a.out",
            "args": [],
            "stopAtEntry": false,
            "cwd": "${fileDirname}",
            "environment": [],
            "externalConsole": false,
            "MIMode": "gdb",
            "setupCommands": [
                {
                    "description": "为 gdb 启用整齐打印",
                    "text": "-enable-pretty-printing",
                    "ignoreFailures": true
                }
            ],
            "preLaunchTask": "build"
        }
    ]
}

std::cout << "this is a test stating" << std::endl;

#include "iostream"