typedef struct _sapi_module_struct sapi_module_struct; struct _sapi_module_struct { char *name; char *pretty_name; int (*startup)(struct _sapi_module_struct *sapi_m...

当在C中定义了一个结构类型时，它的大小是否等于各字段(field)大小之和？编译器将如何在内存中放置这些字段？ANSI C对结构体的内存布局有什么要求？而我们的程序又能否依赖这种布局？这些问题...

As long as we are discussing the relationship/differences between pointers and arrays, let's move on to multi-dimensional arrays. Consider, for example the array: char multi[5][...

Well, let's go back to strings for a bit. In the following all assignments are to be understood as being global, i.e. made outside of any function, including main(). We pointed ...

Of course, what the above program illustrates is a simple way of copying a string. After playing with the above until you have a good understanding of what is happening, we can ...

Earlier when discussing the term "lvalue" I cited K&R-2 where it stated: "An object is a named region of storage; an lvalue is an expression referring to an object". This raises...

To review: · A variable is declared by giving it a type and a name (e.g. int k;) · A pointer variable is declared by giving it a type and a name (e.g. int *ptr) where the aste...

One of those things beginners in C find difficult is the concept of pointers. The purpose of this tutorial is to provide an introduction to pointers and their use to these begin...