C语言入门经典(第四版)9-函数再探.doc

C语言入门经典(第四版)9-函数再探
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The function pointer and the general variable is the same, so you can create an array of function pointers. To declare a function pointer array, only the size of the array on the function pointer array name. For example: int (*pfunctions[10]) (int); this statement declares a pfunctions array containing 10 elements each. This array in the statement of the declaration of a 10 element pfunctions array. Each element in the array is able to store a function address, the function has two parameters of type int, the return type is int. element can store a function address, the function has two parameters type int, the return type is int.
C entry classic (Fourth Edition) entry classic
9. 1. 4 as a function pointer for variables. 1. 4
You can also pass the function pointer as a variable so that you can call different functions based on the function pointed to by the pointer
C entry classic (Fourth Edition) entry classic (9. 2 variables in the function)
The program is divided into function, not only simplifies the development process, but also enhance the ability to solve the problem of programming. Excellent function can often be reused, so developing new applications become faster and easier.
The standard library is that reusable function power function. The variable characteristics and C standard library is more simple. It can be proved that the reuse function power. Some additional function variables in C and the characteristics of language in the statement variables to further enhance the program of the power of language. Static variables: variables inside a function sharing in tracking function
C entry classic (Fourth Edition) entry classic (9. 2. 1 static variables: internal tracking function
All variables used in the implementation of the front to go beyond the scope of the definition of the end of the block it when they are allocated on the