VS Code C++ OOP 不工作 Mac OS High Sierra

Question

大家好，我是 vs code 的新手，我找不到使用面向对象编程的解决方案

当我创建 .h 文件来调用对象函数时出现错误

123MacBook-Pro-de-Rogerio: life DJMatrix $ cd "/ Users / DJMatrix / Documents / Classes / c ++ / life /" && g ++ main.cpp -o main && "/ Users / Dtrix / Documents / Classes / c ++ / life / "main
Undefined symbols for architecture x86_64:
  "Life :: tryAgain ()", referenced from:
      _main in main-ea3ce4.o
ld: symbol (s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

main.cpp:

#include <iostream>
#include "life.h"

using namespace std;

int main()
{
    Life life;
    life.tryAgain();
    return 0;
}

life.h:

#include <iostream>
using namespace std;

class Life
{
public:
    bool sucess;
  void tryAgain();
  void improve();
};

life.cpp:

#include "life.h"

void Life::tryAgain()
{
  cout << "Trying again!!!" << endl;
}

void Life::improve()
{
  cout << "Improve !!" << endl;
}

Answer 1

从我在 VSCode 终端看到的情况来看，只有 main.cpp 正在编译。当您生成最终的二进制文件时，life.cpp 的目标文件没有被链接，这就是为什么它抱怨缺少 Life::tryAgain() 符号的原因。

这取决于您是手动调用编译器还是使用 Makefile 或让 VSCode 为您完成所有这些工作；不管编译命令应该是这样的：

g++ -o main life.cpp main.cpp

VS Code C++ OOP 不工作 Mac OS High Sierra

VS Code C++ OOP don't work Mac OS High Sierra

c++

macos

oop

visual-studio-code

clang++