如何读/写类型值从＆QUOT; RAW＆QUOT;内存用C？ [英] How to read/write type values from "raw" memory in C?

问题描述

我如何做这样的事的？

  void *的内存=的malloc（1000）; //分配一个内存池
*（存储器+ 10）= 1; //在字节10集的整数值
INT I = *（内存+ 10）; //读取从10个字节的整数值
 

解决方案

简单的例子：把内存为unsigned char类型的数组

  void *的内存=的malloc（1000）; //分配一个内存池
uint8_t有* PTR =内存+ 10;
* PTR = 1 //设置一个整数的字节值10
uint8_t有I = * PTR; //读取从10个字节的整数值
 

您可以使用整数太大，但你一定要注意你是在一次设置的字节数量。

How do I make something like this work?

void *memory = malloc(1000);  //allocate a pool of memory
*(memory+10) = 1;  //set an integer value at byte 10
int i = *(memory+10);  //read an integer value from the 10th byte

解决方案

Easy example: treat the memory as an array of unsigned char

void *memory = malloc(1000);  //allocate a pool of memory
uint8_t *ptr = memory+10;  
*ptr = 1 //set an integer value at byte 10
uint8_t i = *ptr;  //read an integer value from the 10th byte

You can use integers too, but then you must pay attention about the amount of bytes you are setting at once.

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