通过利用CIRCLE、LINE语句学习构建图形。通过不段的对程序的调试，逐步的掌握C语言各种语句的功能，同时对自己在C语言方面有不足的地方不段的进行改正，并进一步的提高自己对C语言的了解，能更加熟练的掌握C语言的功能及对程序的调试。-through the use of CIRCLE, LINE statement learning Construction graphics. Adoption is not the right of the debugging process, and gradually master the C language function of the various statements, in the C language is not deficiencies in the conduct of corrections, and further to improve their understanding of the C language, can be more fluent in C language functions and the procedures to debug.