通过学习c语言,我了解到了它的如此强大,不光可以永它编写出各种优秀的应用软件,甚至连功能强大的Unix操作系统和Linux操作系统也几乎是用c语言完成的,只是在硬件操作的代码一般使用了汇编语言，特别是c语言中的指针功能，使用它能灵活地操作内存，但是如果使用不当也会造成因为非法访问而使系统崩溃，也会因为乱使用指针而使内存泄漏，所有，要学习好c语言还是要花费一点功夫的！c语言的课程学习完了，也许现在我们还不能完成一个好强大的操作系统，但是使用c语言解决实际问题的方法还是一样的，所以，我用c语言编写了一个课程设计，题目是销售管理系统。-By learning c language, I learned that it is so powerful, not only can Wing it to prepare a variety of applications, even even the powerful Unix operating system and the Linux operating system is almost c language completed just in hardware operation code generally use assembly language, especially pointer in c language function, use it the flexibility to manipulate memory, but if used incorrectly can also cause crashes because unauthorized access to the system by, also because of the indiscriminate use of pointers so memory leak, to learn good c language or to spend a little more effort! c language course is over, maybe now we can not complete a good operating system, but the methods to solve practical problems using the c language is still the same, so I used the c language curriculum design, the title is a sales management system .