.cpp文件在编译后消失 [英] .cpp file vanishes after compilation

问题描述

我无法解释如果我无法恢复此文件，绝对会令人沮丧。老实说，我觉得没有，但是我需要明白到底是怎么回事，所以我可以采取预防措施。基本上，我正在制作一个简单的OOP项目，涉及EMACS中的假银行帐户，在编译期间，我的所有类代码的.cpp文件都会消失。

I can't explain how absolutely frustrating this will be if there is no way for me to recover this file. Honestly, I feel like there isn't, but I need to understand what the hell happened so I can take preventative steps in the future. Essentially, I am making a simple OOP Project involving fake bank accounts in EMACS, and during compilation, the .cpp file with all of my class code up and vanishes.

这里是消失文件之前和之后的终端命令：

Here are the terminal commands before and after the vanishing file:

    lin114-11:25% ls
    BankAccount.cpp  BankAccount.h  BankAccount.h~  main.cpp
    lin114-11:26% emacs &
    [1] 23359
    lin114-11:27% g++ -o BankAccount.cpp main.cpp
    /tmp/ccEXMM25.o: In function `main':
    main.cpp:(.text+0x67): undefined reference to `CheckingAccount::driver()'
    main.cpp:(.text+0x78): undefined reference to `CheckingAccount::~CheckingAccount()'
    main.cpp:(.text+0xa1): undefined reference to `CheckingAccount::~CheckingAccount()'
    main.cpp:(.text+0xcc): undefined reference to `CheckingAccount::~CheckingAccount()'
    /tmp/ccEXMM25.o: In function `CheckingAccount::CheckingAccount(double, int,                                                                                        
    std::basic_string<char, std::char_traits<char>, std::allocator<char> >)':
    main.cpp:(.text._ZN15CheckingAccountC2EdiSs[_ZN15CheckingAccountC5EdiSs]+0x59):
    undefined reference to `vtable for CheckingAccount'
    collect2: ld returned 1 exit status
    lin114-11:28% ls
    BankAccount.h  BankAccount.h~  main.cpp

如您所见，BankAccount.cpp刚刚起编译后消失。发生了什么事，还有还有什么要恢复文件？

As you can see, BankAccount.cpp just up and disappears after compilation. What happened and is there anyway to recover the file?

推荐答案

当你这样做：

g++ -o BankAccount.cpp main.cpp

你正在告诉 g ++ 编译 main.cpp ，并将输出写入一个名为 BankAccount.cpp 。所以你用可执行文件覆盖你的源文件。

you are telling g++ to compile main.cpp, and write the output to a file called BankAccount.cpp. So you over-write your source file with an executable.

这篇关于.cpp文件在编译后消失的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！