xPrintf

The xPrintf Show the details of PRINTF function in the library of stdio. You can know the implements of PRINTF function and how to write the PRINTF function without the help of C library.

You can also rely my two blogs(Written In Chinese):

1. 深入剖析printf函数(上)：如何不借助第三方库在屏幕上输出"Hello World"? http://blog.csdn.net/tcpipstack/article/details/8490811

2. 深入剖析printf函数(下)：---形参列表和格式化输出是如何做到的？ http://blog.csdn.net/tcpipstack/article/details/8279584

Any questions please contact with me.

Have fun :-)