清除Xcode中的屏幕 [英] Clear Screen in Xcode

问题描述

我正在使用C ++在Xcode中制作一个图书馆管理系统.由于Xcode不支持诸如conio.h之类的库，因此系统"cls"在其中不起作用.想要从一个菜单切换到另一个菜单时，应该使用什么代码清除屏幕?

I am making a Library Management System in Xcode using C++. As Xcode does not support libraries such as conio.h and system "cls" does not work in it. What code should I use to clear the screen when I want it to shift from one menu to the other?

推荐答案

检查一下.

https://discussions.apple.com/thread/1064635? start = 0& tstart = 0

没有直接的方法可以做到这一点； system()命令在Mac(Unix)上不起作用.一种选择是使用代码添加大量空格，即\ n或其他方式是使用curses库 #include < curses.h >(curses.h)，然后使用system("clear")，这基本上会做同样的事情.因此，最好使用代码而不是使用某些库手动打印空间.

There is no direct way to do that; the system() command will not work on Mac (Unix). One option is to add a lot of spaces using code i.e.\n or other way is to use curses library #include < curses.h > (curses.h) and then use system("clear"), which basically will do the same thing. So, its better to print spaces manually using the code rather than using some library.

对于基于POSIX(Unix，Linux，Mac OSX等)的系统，您还可以做另一件事[注:我自己尚未对其进行测试]:

One more thing you can do for POSIX (Unix, Linux, Mac OSX, etc) based systems [Note: I have not tested it myself]:

#include < unistd.h >
#include < term.h >
void ClearScreen()
{
  if (!cur_term)
  {
     int result;
     setupterm( NULL, STDOUT_FILENO, &result );
     if (result <= 0) return;
  }
  putp( tigetstr( "clear" ) );
}

您必须链接到适当的库(-lcurses，-lterminfo等之一)，以编译最后一个库. (来源: http://www.cplusplus.com/forum/articles/10515/)

You'll have to link to the proper library (one of -lcurses, -lterminfo, etc.) to compile that last one. (Source: http://www.cplusplus.com/forum/articles/10515/)

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