Question

I have a txt file named prob which contains:

  6 2 8 3
4   98652
      914
143   789
    1    
527   146
 85      
 1 74   8
7   6 3  

Each line has 9 chars and there are 9 lines. Since I cant make a string array in c, im be using a two dimensional array. Careful running the code, infinite loops are common and it prints weird output. Im also curious as to where does it stop taking in the string? until newline?
expected result for each “save”: 6 2 8 3
or watever the line contained.

#include <stdio.h>
FILE *prob;

main()
{ 
    prob = fopen("prob.txt", "r");

    char grid_values[9][9];
    char save[9];

    int i;
    for (i = 0; (fscanf(prob, "%s", save) != EOF); i++)
    {
        int n;
        for (n = 0; n <= 9; n++)
        {
            grid_values[i][n] = save[n];
            printf("%c", grid_values[i][n]);
        }
    }
    fclose(prob);
}

Answer 1

if you use fscanf, it will stop after a space delimiter..

try fgets to do it.. It will read line by line..

for (i = 0; (fgets(save, sizeof(save), prob) != EOF); i++)

the detail of fgets usage can be found here:
http://www.cplusplus.com/reference/clibrary/cstdio/fgets/

–edited–

here’s the second

while(!feof(file))
{
    fgets(s, sizeof(s), file); ......
}

I think it’ll work well..