c语言怎么读取手机内存

分配内存空间，然后读取

#include

#include

intfileength(FILE*fp);

char*readfile(char*path);

intmain(void)

{

FILE*fp;

char*string;

string=readfile("c:/c.c");

printf("读取完成\n按任意键释放资源内存\n");

//printf("%s\n",string);

系统("暂停");

return0;

}

char*readfile(char*path)

{

FILE*fp;

intlength;

char*ch;

if((fp=fopen(path,"r"))==NULL)

<{

printf("openfile%serror.\n",path);

输出(0);

}

length=filelength(fp);

ch=(char*)malloc(length);

fread(ch,length,1,fp);

*(ch+length-1)='\0';

返回;

}

intfileength(FILE*fp)

{

整数；

fseek(fp,0,SEEK_END);

num=ftell(fp);

fseek(fp,0,SEEK_SET);

returnnum;

}

扩展信息

cLinux处理器间通信共享内存：

#include"comm.h"

staticintcommShm(intsize,intflags)//创建共享内存

<{

key_tkey=ftok(PATHNAME,PROJ_ID);

if(key<0){

error("ftok");

return-1;

}

intshmid=shmget(key,size,flags);

if(shmid<0){

error("shmget");

return-2;

}

returnshmid;

}

intcreateShm(intsize)

{

returncommShm(size,IPC_CREAT|IPC_EXCL);

}

}

intgetShm(intsize)//获取共享内存

returncommShm(size,IPC_CREAT);

}

intdestoryShm(intshmid)//销毁共享内存

{

if(shmctl(shmid,IPC_RMID,NULL)<0){

错误("shmctl");

return-3;

}

}