Static use method in C language

A, c program storage space layout

The C program has been composed of the following parts:

1 The body section--cpu the execution machine instruction part; A program has only one copy; read-only to prevent the program from modifying its own instructions as a result of an accident;

2 Initialize the data segment (data segment)--All global variables with initial values in the program are stored here.

3 non-initialized data segment (BSS segment)--The global variable not initialized in the program; the kernel initializes this segment to 0.

4 Stack-growth direction: From top to bottom growth; automatic variables and the information that needs to be saved each time a function is called (return address; Environment information).

5) heap-dynamic storage points.

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| 栈 |
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| 堆 |
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| 未初始化 |
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| 初始化 |
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| 正文段 |
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