C编程：从文本文件中读取（双倍）数字，逐行读取2D数组

我有一个用excel创建的文本文件，其中包含一个尺寸为36x35的表格。值为双倍数字，例如2.58，文本文件如下所示：

1.25  2.31 ...
4.28  2.56 ...
3.27  ...
...   ...

我知道表arr_行、arr_列的维度，因此声明一个动态二维数组：

double **MUDG_table;

//dynamic allocate array of MUDG_table (1st Dimension)
MUDG_table = calloc(arr_row,sizeof(int *));

//check if the memory has been allocated correctly
if (MUDG_table==NULL) 
{
    printf("Error allocating memory!\n"); //print an error message
    return 1; //return with failure
}

for (cv02=0;cv02<arr_row;cv02++)
{
    //dynamic allocate array of MUDG_table (2nd Dimension)
    MUDG_table[cv02] = calloc(arr_column, sizeof(int));

    //check if the memory has been allocated correctly
    if (MUDG_table[cv02]==NULL) 
    {
        printf("Error allocating memory!\n"); //print an error message
        return 1; //return with failure
    }
}

到目前为止还不错。然后，我尝试从文本文件中读取值，并将其存储到数组中进行进一步处理：

//************************************************************************************************************//
//read the text file with the values of the gain and save it to the MUDG_table
//************************************************************************************************************//

gain_ptr = fopen("MUDG_text.txt", "r");

if (gain_ptr == NULL)
{
    printf("Error Reading File\n");
    return 1; //return with failure
}

for (row=0;row<arr_row;row++)
{
    for (column=0;column<arr_column;column++)
    {
        fscanf(gain_ptr, " %1f", &MUDG_table[row][column]);
    }
}

fclose(gain_ptr);

问题是我得到的值大约是5.26346e-315DEN

---

知道我做错了什么吗。这是因为我没有使用EOF吗？

好的，所以在浏览了几篇文章之后，感谢我在这里得到的回复，我更改了代码，使其正常工作

首先，数组应声明为double：

//dynamic allocate array of MUDG_table (1st Dimension)
MUDG_table = calloc(arr_row,sizeof(double *));

//check if the memory has been allocated correctly
if (MUDG_table==NULL) 
{
    printf("Error allocating memory!\n"); //print an error message
    return 1; //return with failure
}

for (cv02=0;cv02<arr_row;cv02++)
{
    MUDG_table[cv02] = calloc(arr_column, sizeof(double));

    //check if the memory has been allocated correctly
    if (MUDG_table[cv02]==NULL) 
    {
        printf("Error allocating memory!\n"); //print an error message
        return 1; //return with failure
    }
}

主要问题是fscanf，我不知道它为什么不工作。所以我用fgets替换了它。我在另一篇文章中发现了这段代码，并对其进行了修改，使其适用于本例

gain_ptr = fopen("MUDG_text.txt", "r");

if (gain_ptr == NULL)
{
    printf("Error Reading File\n");
    return 1; //return with failure
}

for (row=0;row<arr_row;row++)
{
    fgets(buffer, 1024, gain_ptr); //buffer is declared as char buffer[1024];

    tok = strtok(buffer, "\t");    // NULL means 'continue from last token'  
    //tok is declared as char *tok;
    //the numbers in my text file are seperated by tabs
    //so the tokens should be separated by \t

    column = 0;  //since fgets gets a whole line I had to separate the columns
    while (tok != NULL) 
    {
        test_var = atof(tok);  //test variable is declared as double
        //and it is used to hold temporarily the value of tok in double
        tok = strtok(NULL, "\t");    // NULL means 'continue from last token'

        MUDG_table[row][column] = test_var;
        column++;
    }
}   
fclose(gain_ptr);

---

也许这不是最好的解决方案，但至少它是有效的

MUDG_表=Callocar_行，sizeofint*；这是错误的。您应该始终将x=mallocsizeof*x*…；写入。。。；。在本例中，它是MUDG_table=callocar_行，sizeof*MUDG_table；也许这就是原因：当您想要存储浮点值或双精度值时，sizeofint是错误的。double和int的大小不同。特别是这里的Callocar_柱，sizeofint@不，它应该是MUDG_表[cv02]=callocar_列，sizeof*MUDG_表[cv02]；。这样，如果您更改了MUDG_表定义，您就不需要通过所有代码来更改所有这些定义that@Eregrith所有结果均为0.0000。我刚刚在之前的一篇文章中读到：仅供参考，在C中读取浮点数的正确方法是使用fgets和strod。不要为此使用atof或scanf；atof不会告诉您语法错误，scanf会在溢出时触发未定义的行为。有没有可能这就是问题所在？