struct FILELINE
{
    char DataLine[100];
    struct FILELINE* next; // 这里什么意思不懂，这样是属于递归么？有啥作用
};


struct FILELINE* ReadFile2Memory( char *fileName )
{
    struct FILELINE* p1 = NULL;
    struct FILELINE* p2 = NULL;
    struct FILELINE* head = NULL;
   
    FILE* fp = NULL;
   
    p1 = (struct FILELINE*)malloc( sizeof(struct FILELINE) );    //开辟新内存单元
    if( p1 == NULL )
    {
        printf( "开辟新内存单元失败......\n" );        
        return( (struct FILELINE*)NULL );
    }
   
    fp = fopen( fileName , "r" );//打开文件句柄
    if( fp == NULL )
    {
        printf( "打开文件%s失败......\n" , fileName );
        
        return( (struct FILELINE*)NULL );
    }
   
    // 读取第一行，存入第一个节点
    memset( p1, 0, sizeof(struct FILELINE) );
    fgets( p1->DataLine, MAX_LINE_LENGTH, fp );
    if( p1->DataLine[strlen(p1->DataLine)-1] == '\n' )
    {
        p1->DataLine[strlen(p1->DataLine)-1]='\0';
    }
    iCount++;
    head = p1;
    p2 = p1;
   

    while( !feof(fp) )
    {
        p1 = (struct FILELINE*)malloc( sizeof(struct FILELINE) );
        
        if( p1 == NULL )
        {
            printf( "开辟新内存单元失败......\n" );
            break;
        }
        memset( p1, 0, sizeof(struct FILELINE) );
        fgets( p1->DataLine, MAX_LINE_LENGTH, fp );
        if( p1->DataLine[strlen(p1->DataLine)-1] == '\n' )
        {
            p1->DataLine[strlen(p1->DataLine)-1]='\0';
        }
        iCount++;
        p2->next = p1;  //这里不懂
        p2 = p1;
        
   
    }
   
    p2->next = NULL;
   
    fclose( fp );
    return head;
}

[ 本帖最后由 OneMan 于 2009-10-30 23:59 编辑 ]