heheda@linux:~/Linux/cmake/cmakeClass$ tree
.
├── CMakeLists.txt
├── include
│ ├── Gun.h
│ └── Soldier.h
├── main.cpp
└── src
├── Gun.cpp
└── Soldier.cpp
2 directories, 6 files
heheda@linux:~/Linux/cmake/cmakeClass$ 
- launch.json（在.vscode文件夹中）
{
// 使用 IntelliSense 了解相关属性。
// 悬停以查看现有属性的描述。
// 欲了解更多信息，请访问: https://go.microsoft.com/fwlink/?linkid=830387
"version": "0.2.0",
"configurations": [
{
"name": "(gdb) 启动",
"type": "cppdbg",
"request": "launch",
"program": "${workspaceFolder}/bin/app",
"args": [],
"stopAtEntry": false,
"cwd": "${workspaceFolder}",
"environment": [],
"externalConsole": true,
"MIMode": "gdb",
"setupCommands": [
{
"description": "为 gdb 启用整齐打印",
"text": "-enable-pretty-printing",
"ignoreFailures": true
},
],
"preLaunchTask": "Build",
// "miDebuggerPath": "/usr/bin/gdb"
},
]
}- tasks.json（在.vscode文件夹中）
{
"version": "2.0.0",
"options": {
"cwd": "${workspaceFolder}/build"
},
"tasks": [
{
"type": "shell",
"label": "cmake",
"command": "cmake",
"args": [
".."
]
},
{
"label": "make",
"group": "build",
"command": "make",
"args": [],
"problemMatcher": []
},
{
"label": "Build",
"dependsOrder": "sequence",
"dependsOn": [
"cmake",
"make"
]
},
{
"type": "cppbuild",
"label": "C/C++: g++ 生成活动文件",
"command": "/usr/bin/g++",
"args": [
"-fdiagnostics-color=always",
"-g",
"${file}",
"-o",
"${workspaceFolder}/bin/app"
],
"options": {
"cwd": "${workspaceFolder}"
},
"problemMatcher": [
"$gcc"
],
"group": {
"kind": "build",
"isDefault": true
},
"detail": "编译器: /usr/bin/g++"
}
]
}- settings.json（在.vscode文件夹中）
{
"files.associations": {
"ostream": "cpp",
"array": "cpp",
"atomic": "cpp",
"*.tcc": "cpp",
"cctype": "cpp",
"clocale": "cpp",
"cmath": "cpp",
"cstdarg": "cpp",
"cstddef": "cpp",
"cstdint": "cpp",
"cstdio": "cpp",
"cstdlib": "cpp",
"cwchar": "cpp",
"cwctype": "cpp",
"deque": "cpp",
"unordered_map": "cpp",
"vector": "cpp",
"exception": "cpp",
"algorithm": "cpp",
"memory": "cpp",
"memory_resource": "cpp",
"optional": "cpp",
"string": "cpp",
"string_view": "cpp",
"system_error": "cpp",
"tuple": "cpp",
"type_traits": "cpp",
"utility": "cpp",
"fstream": "cpp",
"initializer_list": "cpp",
"iosfwd": "cpp",
"iostream": "cpp",
"istream": "cpp",
"limits": "cpp",
"new": "cpp",
"sstream": "cpp",
"stdexcept": "cpp",
"streambuf": "cpp",
"typeinfo": "cpp",
"head.h": "c"
}
}- Gun.h
#pragma once //防止头文件重复包含
#include<string>
class Gun
{
public:
//构造函数初始化，构造函数直接在头文件中实现
Gun(std:: string type){
this->_bullet_count=0;
this->_type=type;
}
//装填子弹
void addBullet(int bullet_num);
//发射子弹的接口
bool shoot();
private:
int _bullet_count;
std:: string _type;
};- Gun.cpp
//.cpp文件写接口函数的实现
#include "Gun.h"
#include<iostream>
using namespace std;
void Gun::addBullet(int bullet_num)
{
this-> _bullet_count+=bullet_num;
}
bool Gun::shoot()
{
if(_bullet_count<=0)
{
cout<<" here is no bullet!"<<endl;
return false; //直接返回，程序结束
}
cout<<" fire work"<<endl;
this->_bullet_count-=1;
return true;
}- Soldier.h
#pragma once
#include <string>
#include "Gun.h"
class Soldier
{
public:
Soldier(std::string name); //构造函数不在头文件中实现
//因为定义了指针，故构造析构函数
~Soldier();
//为士兵添加一把枪
void addGun(Gun* ptr_gun );
//为枪增加子弹的接口
void addBulletToGun(int num);
bool fire();
private:
std::string _name; //头文件中必须写std
Gun *_ptr_gun;
};- Soldier.cpp
#include "Soldier.h"
Soldier::Soldier(std::string name) {
this->_name = name;
this->_ptr_gun = nullptr;
}
void Soldier::addGun(Gun* ptr_gun) {
this->_ptr_gun = ptr_gun;
}
void Soldier::addBulletToGun(int num) {
this->_ptr_gun->addBullet(num);
}
bool Soldier::fire() {
return this->_ptr_gun->shoot();
}
Soldier::~Soldier() {
if(this->_ptr_gun == nullptr) {
return;
}
delete this->_ptr_gun;
this->_ptr_gun = nullptr; // 防止野指针
}- CMakeLists.txt
cmake_minimum_required(VERSION 3.10)
project(SOLDIERFIRE)
# set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -g -O2 -Wall")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall")
set(CMAKE_CXX_STANDARD 11) # 设置C++标准为C++11(-std=c++11)
set(CMAKE_BUILD_TYPE "Debug")
include_directories(${CMAKE_SOURCE_DIR}/include)
aux_source_directory(${PROJECT_SOURCE_DIR}/src SRC_LIST) # 选择src文件夹下面的所有文件
add_executable(app main.cpp ${SRC_LIST})
# 指定输出的路径
set(HOME ${PROJECT_SOURCE_DIR}) # 定义一个变量用于存储一个绝对路径
set(EXECUTABLE_OUTPUT_PATH ${HOME}/bin) # 将拼接好的路径值设置给 EXECUTABLE_OUTPUT_PATH 变量- main.cpp
#include "Gun.h"
#include "Soldier.h"
#include <iostream>
//测试函数, 实现一些测试功能
void test()
{
Soldier sandu("xusanduo"); //实例化Soldier类
sandu.addGun(new Gun("AK47")); //要传入一个gun，需要先创建一个出来，也就是new一个
sandu.addBulletToGun(20);
sandu.fire( );
}
int main( )
{
test( );
auto a = 8;
std::cout << a + 10 << std::endl;
return 0;
}执行结果：
heheda@linux:~/Linux/cmake/cmakeClass$ mkdir build
heheda@linux:~/Linux/cmake/cmakeClass$ cd build/
heheda@linux:~/Linux/cmake/cmakeClass/build$ cmake ..
-- The C compiler identification is GNU 7.5.0
-- The CXX compiler identification is GNU 7.5.0
-- Check for working C compiler: /usr/bin/cc
-- Check for working C compiler: /usr/bin/cc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Detecting C compile features
-- Detecting C compile features - done
-- Check for working CXX compiler: /usr/bin/c++
-- Check for working CXX compiler: /usr/bin/c++ -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Configuring done
-- Generating done
-- Build files have been written to: /home/heheda/Linux/cmake/cmakeClass/build
heheda@linux:~/Linux/cmake/cmakeClass/build$ make
Scanning dependencies of target app
[ 25%] Building CXX object CMakeFiles/app.dir/main.cpp.o
[ 50%] Building CXX object CMakeFiles/app.dir/src/Gun.cpp.o
[ 75%] Building CXX object CMakeFiles/app.dir/src/Soldier.cpp.o
[100%] Linking CXX executable ../bin/app
[100%] Built target app
heheda@linux:~/Linux/cmake/cmakeClass/build$
