malloc

 

C

語言

類型的支持

動態內存管理

錯誤處理

程序實用工具

日期和時間工具

字元串庫

演算法

數值計算

輸入/輸出的支持

本地化的支持

線程的支持 （C11）

原子操作 （C11）

 

動態內存管理

malloc

calloc

realloc

free

 

Defined in header <stdlib.h>
void* malloc( size_t size );

分配size個位元組的未初始化的存儲.

Original:

Allocates size bytes of uninitialized storage.

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如果分配成功，則返回一個指針到最低的（第一個）位元組分配的內存塊，適當的任何對象類型相一致.

Original:

If allocation succeeds, returns a pointer to the lowest (first) byte in the allocated memory block that is suitably aligned for any object type.

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size是零​​，其行為是實現定義的（空指針可能會被退回，可能會被退回，可能無法用於訪問存儲或一些非空指針）

Original:

If size is zero, the behavior is implementation defined (null pointer may be returned, or some non-null pointer may be returned that may not be used to access storage)

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參數

size

-

要分配的位元組數 Original: number of bytes to allocate The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

返回值

如果發生了錯誤，開始新分配的內存或空指針的指針。指針必須被釋放free().

Original:

pointer to the beginning of newly allocated memory or null pointer if error has occurred. The pointer must be deallocated with free().

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另請參閱

C++ documentation for malloc