看手册的同时学一下英语，还挺不错的！
原文： LEARNING CC is a programming language developed in 1970’s that allows program development flexibility (low level constructs) and tools (libraries) to write efficient code.
Most low level programmers prefer C, as Java programming language forces more rigorous structure and Object Oriented programming style.
But in applications where many millions of data needs to be processed, speed is critical, or better programmer controlled memory management is required, java may lack the efficiency to provide a practical solution.
C is also widely used in numerical applications such as solving large systems of equations, developing low level utilities such as device drivers, programming data compression algorithms, graphics applications, and computational geometry applications and game programming.
C places a high “trust” on the programmer and allows the programmer to use constructs freely. This provides flexibility and a great deal of power, but the programmer must take great care in developing, debugging and maintaining programs.
C and UNIX provide the ideal programming environment for the experienced programmer. Much of Unix kernel is written in C.
Learning to program in C gives a set of low level programming tools that is unmatched by any other programming language.
The power of C is its ability to express programming instructions using a combination of low level and high level constructs and has great of control over how your programs allocate, use and free memory.
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