我该如何处理此细分错误

Question

我一直收到相同的消息“细分错误：11”gdb告诉我断点在main函数之后。在我声明int j的行中；我真的不明白怎么可能破坏代码。

此函数读取的输入仅由1个字符串后跟2个数字组成，例如

约翰22 43萨姆11 23

它要做的只是将整个输入存储在“ elenco”中，然后打印字符串。

首先，我创建了一个与输入匹配的结构。然后我做了一个函数，目的是读取输入并将其存储在变量中。然后我做了一个函数，其变量是函数的输出，该函数读取输入（因此为input），并打印给定的字符串

有人可以帮助我确定问题并解决吗？

#include  <stdio.h>
#include <stdlib.h>
#include <string.h>

typedef struct
{
    char name[20];
    int distance;
    int point;
}  throw;

throw *read_file(FILE *f, int *j)
{
    int i = 0;
    int c;
    int Dim = 32;
    char buf[1000];
    throw *list;

    list = malloc(Dim *sizeof(*list));
    if (list == NULL)
    {
        (*j) = 0;
        return NULL;
    }
    while (fgets(buf, sizeof(buf), f)!= NULL)
    { 
        sscanf(buf, "%19s %d %d",
        list[*j].name,
        &list[*j].distance,
        &list[*j].point);
        *j += 1;

        if ( *j >= Dim)
        {
            Dim = Dim*2;
            list = realloc(list, Dim *sizeof(*list));
            if (list == NULL)
            {
                return NULL;           
            }
        }
    }
    return list;
}

void print_everything(throw *list, int j)
{
    int c;
    for (c=0; c < j; c++ )
    {
        printf("%d\n",list[c].distance);
    }
}

int main(int argc,const char  *argcv[])
{
    int j = 0;
    FILE *file;
    throw *list;
    if (!( argc != 3))
    {
        printf("file's dimension is wrong\n");
        return -1;
    }

    file = fopen(argcv[1], "r");

    list = read_file(file, &j);

    print_everything(list, j);
    fclose(file);

    return 0;
}

input1.txt

马里奥20 30乔治30 40马里奥40 40戴维德32 20马里奥9 32

正是文件所包含的内容

Answer 1

您的程序很好。您的问题是在input1.txt中，您需要

Mario 20 30
Giorgio 30 40
Mario 40 40
Davide 32 20
Mario 9 32

使用fgets（）读取时，每行都需要一个\ n

Answer 2

对代码进行了一些更改，使列表使用错误，尝试使用指针

#include  <stdio.h>
#include <stdlib.h>
#include <string.h>

#define MAXSTR 250

typedef struct elenco
{
    char *name;
    int distance;
    int point;
    struct elenco *next;
}  throw;

throw *list_add(throw *list, int distance, int point, const char *name)
{
    throw *new = malloc(sizeof(throw));
    if (new != NULL) {
        new->distance = distance;
        new->point = point;
        new->name =(char*)malloc(strlen(name)+1);
        strcpy(new->name,name);
        new->next = list;
        return new;
    }
    return list;
}

throw *read_file(FILE *f)
{
    char buf[MAXSTR];

    throw *list = malloc(sizeof(throw));

    while (fgets(buf, sizeof(buf), f)!= NULL)
     { 
         char name[MAXSTR];
         int distance;
         int point;
        sscanf(buf, "%s %d %d",
            name,
            &distance,
            &point);

            list = list_add(list, distance, point, name);
}
    return list;
}


void print_everything(throw *list)
{

    while (list) {
        printf("%d\n",list->distance);
        list = list->next;
    }

}


int main()
{
    int argc;
    const char  *argcv;
    FILE *file;

    if (!( argc != 3))
    {
    printf("file's dimension is wrong\n");
    return -1;
    }


    file = fopen(&argcv[1], "r");

    throw *list = read_file(file);
    print_everything(list);

    fclose(file);

return 0;
}