c++一般用来做什么呀?

主流的3种操作系统Windows内核都是用C语言和汇编写的，上层高级特性是用C++写的。
　　《魔兽世界》等几乎所有的网络游戏，百度搜索引擎，我们所用的大多数软件都是用C++写的（硬件也有很多用到C++的）。
　　以下是一些C++的应用：
　　Amazon：Software for large-scale e-commerce
　　Apple: OS X is written in a mix of language, but a few important parts are C++（当然最核心的部分都是汇编与c语言）.
　　AT&T:The largest US telecommunications provider.
　　o provisioning systems
　　o systems for rapid network recovery after failure
　　Autodesk: A large number of major number of application in the CAD domain
　　Ericsson:
　　o server platform.
　　o TDMA-CDMA HLR
　　o GSM-TDMA-CDMA mobility gateway
　　Google: web search engine, etc。
　　HP: Here is a tiny fraction of HP's C++ apps:
　　o C, C++, Fortran90 compilers, and linker for the new HP IA64 platform (these add to more than 1 million lines of C++ code).
　　IBM:
　　o OS/400.
　　o K42: a high performance, open source, general-purpose operating system kernel for cache-coherent multiprocessors.
　　Intel:
　　o Vtune performace analysis software
　　o compilers and optimizers
　　o lots of chip design and manufacturing software
　　JPL (Jet Propulsion Lab, NASA): Mars rover autonomous driving system (incl. scene analysis and route planning). C++ on Mars! Also lots of supporting software "on the ground" (i.e. Earth).
　　Microsoft:
　　o Windows XP
　　o Windows NT (NT4 and 2000)
　　o Windows 9x (95, 98, Me)
　　o Microsoft Office (Word, Excel, Access, PowerPoint, Outlook)
　　o Internet Explorer (including Outlook Express)
　　o Visual Studio
　　o SQL
　　Mozilla: Firefox browser and Thunderbird mail client (open source)
　　MySQL: MySQL Server (about 250,000 lines of C++) and MySQL Cluster. Arguably the world's most popular open source database
　　Nokia:
　　o Mobile Communications radio-station/internet bridges: FlexiGGSN (Gateway GPRS Support Node) and FlexiSGSN (Server GPRS Support Node).
　　o MSC/HLR
　　Sun: o The HotSpot Java Virtual Machine is written in C++
　　Symbian OS: rationale: "[...] using C++ for all system code, from the kernel upwards." This is one of the most widespread OS's for cellular phones
　　KDE from linux is written in C++.
　　telephone systems: I think it would be almost easier to list the systems which aren't written in C++
　　C++写出的软件，还包括
　　VLC, 著名的开源视频播放器；
　　LAMMPS，著名分子动力学模拟软件，其中包括一部分Fortran代码；
（转自百度百科）

一般用于底层驱动 ，或者面向客户的应用软件

做windows界面，以及相关程序