C++读取文件，将文件内容读取到struct中

struct定义：

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#include "stdafx.h"

//内存对齐1字节

#pragma pack(1)

 

struct Day

{

    int DateTime;

    int Open;

    int High;

    int Low;

    int Close;

};

 

#pragma pack()

指针读取：

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// Test.cpp : Defines the entry point for the console application.

//

 

#include "stdafx.h"

#include "Day.cpp"

#include <sys\stat.h>

using namespace std;

 

int _tmain(int argc, _TCHAR* argv[])

{

    fstream f;

    const char* filename = "e:\\t.dat";

    f.open(filename,ios::binary|ios::in);

 

    struct _stat info;

    _stat(filename,&info);

    int filesize = info.st_size;

    const int SIZE_OF_DAY = sizeof(Day);

    cout<<"sizeof(Day)="<<SIZE_OF_DAY<<endl;

    const int days_count = filesize/sizeof(Day);

    cout<<"day_count="<<days_count<<endl;

    Day* day = new Day[days_count];

    //Day* dayTemp=day;

    for(int i=0;i<days_count;i++)

    {

        Day* p2Day = day + i;

        f.read((char*)p2Day,SIZE_OF_DAY);

        cout<<p2Day->DateTime<<endl;

        cout<<p2Day->Close<<endl;

    }

    f.close();

    delete[] day;

    system("pause");

 

    return 0;

}