ch01

解二次方程，输入系数a，b，c,输出两个解、一个解、和无解这三种情况时的结果(Solving the quadratic equation, three cases)

说明：  精通gdi+这本书的源码，讲得很详细，大家可以看看(Proficient in gdi+ source code of this book, made it very detailed, we can see)

C#从入门到精通，这就是下半部分，大家可以自己找上半部(C# From Novice to Professional, which is the lower half, you can find yourself on the half)

菜鸟级别，不会写代码，需要看源代码，求大神们帮帮忙，小人刚入道(Rookie level, do not write code, you need to look at the source code, and the great God who help out, the villain joined the Road)

用BitBlt()函数实现界面切换的程序设计方法,其中包括：新建项目,用函数实现文件的打开操作以及相关的程序设计,(The program design method of interface switching is realized by BitBlt () function, which includes: new project, file opening operation with function, and related program design.)

VC中使用ADO访问数据库的一个事例程序,包含了许多SQL语句，对初学者非常有意义(ADO visits access database.It contains many sql sentences,very significant to beginners)

To use the example, fill in the Resource String (by default it is GPIB0::20::INSTR). Select center frequency and frequency span and press Start button to start measurement. Results are shown in table.

学习MFC字体的代码。(learning MFC font code.)

VC++对BMP位图进行图像平移实例,只能打开BMP格式的图像(VC++ bitmap image of BMP pan instance, can only open the BMP image format)

设计函数STRCAT,模拟标准函数strcat(Design function STRCAT, analog standard function strcat)