Question

我需要将输入文本文件读入链接列表，如下所示：

Greenbelt 1 Green 0
  College_Park 1 Green 125
  Prince_George_Plaza 1 Green 300
  West_Hyatsville 1 Green 450
  Fort_Totten 3绿色700黄色0红色241
  Georgia_Ave_Petworth 2绿色820黄色100
  Columbia_Heights 2 Green 1000 Yellow 280
  U_St 2绿色1180黄色460
  Shaw_Howard_U 2绿色1300黄色580
  Mt_Vernon_Sq 2绿色1420黄色700
  Gallery_Place 3绿色1540黄色820红色1612
  档案2绿色1630黄色910
  L＆＃39; Enfant_Plaza 5绿色1800黄色1080蓝色1300银色1320橙色1400
  Navy_Yard_Ballpark 1 Green 2200

但我遇到的问题是，当有多条彩色地铁线路时，我无法弄清楚要做什么。我需要输入它，以便站名后的所有内容仍然连接到该站。我的结构如下：

#define NEW(x) (x*)malloc(sizeof(x))
    typedef struct{
    char * name;
    char * color;
    int number;
    int time;
} STATION;

typedef STATION DATA;

typedef struct node
{ void * data;
    struct node * next;
} NODE;

typedef struct
{ long num;
    NODE * head;
    NODE * tail;
}ROOT;

我成功使用的代码只输入每行中的前四个单词/数字。

int main(){

    char c, s1[100], *num, *time;
    DATA *data;
    ROOT *root;
    NODE *temp;
    FILE *input, *lines, *report;

    input = fopen(argv[1], "r");
    lines = fopen(argv[2], "w");
    report = fopen(argv[3], "w");

root = make_root();
 while (fscanf(input, "%c", &c) != EOF) {
            data = NEW(DATA);
            if (data == NULL) {
                return -1;
            }

            data->name = (char *) malloc(sizeof(char));

            if (c == '\n') {
                fscanf(input, "%c", &c);
            }

            i = 0;
            do {
                data->name[i] = c;
                i++;
                data->name = (char *) realloc(data->name, (i + 1) * sizeof(char));
                fscanf(input, "%c", &c);
            } while (c != ' ');
            data->name[i] = '\0';

            i = 0;
            num = (char *) malloc(sizeof(char));
            do {
                fscanf(input, "%c", &c);
                num[i] = c;
                i++;
                num = (char *) realloc(num, (i + 1) * sizeof(char));
            } while (c >= '0' && c <= '9');
            data->number = atoi(num);

            i = 0;
            data->color = (char *) malloc(sizeof(char));
            do {
                fscanf(input, "%c", &c);
                data->color[i] = c;
                i++;
                data->color = (char *) realloc(data->color, (i + 1) * sizeof(char));
            } while (c != ' ');
            data->color[i - 1] = '\0';

            i = 0;
            time = (char *) malloc(sizeof(char));
            do {
                fscanf(input, "%c", &c);
                time[i] = c;
                i++;
                time = (char *) realloc(time, (i + 1) * sizeof(char));
            } while (c >= '0' && c <= '9');
            data->time = atoi(time);

insert_at_position(root, data);
}

return 0;
}

ROOT * make_root (void)
{ ROOT * temp;
    temp = NEW(ROOT);
    if (temp != NULL)
    { temp->num = 0;
        temp->head = NULL;
        temp->tail = NULL;
    }
    return temp;
}


int insert_at_position(ROOT *r, DATA *d)
{ NODE * temp, *this;
    temp = make_node(d);

    if (temp == NULL){
        return -1;
    }

    if (r == NULL) {
        r = make_root();
        if (r == NULL) {
            return -1;
        }
    }

    if (r->head == NULL)
    { insert_at_head(r, temp->data);
        return 0;
    }

    this = r->head;
    if (((DATA *)(this->data))->time >= ((DATA *)(temp->data))->time)
        insert_at_head(r, temp->data);

    else
    { while (this->next != NULL &&
             ((DATA *)(this->next->data))->time > ((DATA *)(temp->data))->time)
            this = this->next;

        if (this->next == NULL)     // update tail if insert at tail
        { r->tail = temp;
            this->next = temp;
            (r->num)++;
        }
        else
        { temp->next = this->next;
            this->next = temp;
            (r->num)++;
        }
    }
    return 0;
}

我的问题是如何更改我的代码/结构，以便我可以将所有站信息放入单个节点，以便我可以使用该信息在我的代码中稍后显示城域信息？我应该将char * color2，int time2，char * color3，int time3等添加到我的结构中以适应具有额外行的站点吗？

我读到我可以读取电台名称和该电台上的线路数，然后为此创建一个额外的STATION结构，但我找不到有关如何操作的信息。任何信息都会有帮助！谢谢！

将具有不同长度行的文件读入链表（C编程）

0 个答案: