在TXT文件阅读矩阵并将其存储在二维数组 [英] read matrix in txt file and store it in array 2D

问题描述

我一直想在一个txt文件中的矩阵输入存储阵列中，但它告诉我这一点：这是code

I've been trying to store a matrix input in a txt file in a array but it show me this: this is the code

 #include <stdio.h>

int main()
{
    int c, i, j, row, col, nl, cr;

    row = col = nl = cr = 0;

    FILE *fp = fopen("g.txt", "r");

    // Figure out how many rows and columns the text file has
    while ((c = getc(fp)) != EOF)
    {
        if (c == '\n')
            nl++;
        if (c == '\r')
            cr++;

        col++;

        if (c == '\n')
            row++;

       putchar(c);
    }

    col = (col - (nl + cr));
    col = (int) (col/row);

   // printf("\nnumber of rows is %d\n", row);


    // read letters into array

    char array[row][col];

    if ( fp )
       {
        for ( ;; )
              {
            c = getc(fp);
                 if ( c == EOF )
                 {
                        break;
                 }
                 if ( c != '\n' && c != '\r' )
                 {
                        array[i][j] = c;

                    if ( ++j >= col )
                        {
                            j = 0;
                            if ( ++i >= row )
                            {
                                break;
                            }
                        }
                }
            }
        fclose(fp);
    }

    for ( i = 0; i < row; i++ )
    {
            for ( j = 0; j < col; j++ )
            {
                 putchar( array[i][j]);
            }
            putchar('\n');
    }
    return 0;
}
somone have any idea please? exemple of the txt file :

255  50  9  50  1  50  50  1
50  255  50  50  50  50  50 50
50  50  255  50  50  50 50  50
8  50  50  255  50 50  50  50
50  50  50  50 255 50  50  50
50  50  50 50  50  255  50  50
1  50 50  50  50  50  255  50
2 50  50  50  50  50  50  255 

我的计划告诉我这一点：

my program show me this:

255 50   9   50  1   50   50   1
50  255  50  50  50  50   50   50
50  50   255 50  50  50   50   50
8   50   50  255 50  50   50   50
50  50   50  50  255 50   50   50
50  50   50  50  50  255  50   50
1   50   50  50  50  50   255  50
2   50   50  50  50  50   50   255     $■( 1gÍuáþ09■   ı¤ıu"ÒávD   ê$[
►  ð²(     ♥       l    ►      ■   
  ê$[ ♥   l       ­²( O»ƒv[ 4■( Qõá
v♥   #õáv┬²║Oÿ|®v    ñ|®ve┬ív
 ■(     x■( ÿ|®v Ó²⌂    @■(  áƒv╚♀[ L
■( w¯ƒv‼   ê■( I┴ávÿ|®v↓┴áv~²║O
   Ó²⌂    \■( ■   ─ ( e┬ívÍ┬29►☺

输入文件显示它的好的，但问题是阵列输出我不undrestand为什么它显示此caracters

for the input file it show the good one ,but the problem is for the array output i don't undrestand why it show me this caracters

推荐答案

迈克尔的评论是正确的，我会感到惊讶，如果连编译。你需要动态分配阵列，像这样：

Michael's comment is correct, I'd be surprised if that even compiles. You'll need to allocate your array dynamically, like so:

char **array = malloc(sizeof(char *) * row)

和每一行，如：

数组[C] =的malloc（sizeof的（char）的* COL）

您必须释放每一行和每一阵列免费的。

You'll have to free each row and the array with free as well.

它也像你试图读取并存储整数值。请记住，当你得到这个工作，你仍然必须转换为字符值，如果是这样的话。

It also looks like you are trying read and store integer values. Keep in mind when you do get this working you'll still have to convert the character values if that is the case.

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