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POvalidating content of input file
 

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    <p>I have this defensive-programming issue that I don't really know how to solve. </p> <p>I have this function that takes file path and size of table (rows / columns count) as arguments and I'm looking for better way of validating the input file. I assume that arguments of this function are always correct. <code>size</code> represents the "smaller side" of the table that is stored in file:</p> <p>For example :</p> <pre><code>1 2 3 4 5 6 7 8 </code></pre> <p>size = 2 is correct while</p> <pre><code>1 2 3 4 5 5 6 7 8 9 </code></pre> <p>size = 2 is incorrect</p> <p>I'd also like to be able to reject the files like this </p> <pre><code>1 2 3 4 5 6 7 8 </code></pre> <p>size = 2 (which is accepted through fscanf)</p> <p>Another type of file I'd like to be able to reject is</p> <pre><code>1 2 3 4 5 6 </code></pre> <p>size = 2</p> <p>As for now my only security is checking if the elements of the file are really numbers. </p> <p>Here is the code I've done so far :</p> <pre><code>void import(float** table, int size, char* path) { FILE* data = fopen(path, "r"); assert(data); int i,j; int st; for (i=0; i&lt;size; i++) { for(j=0; j&lt;(size*2)-1; j++) { st = fscanf(data, "%f", &amp;table[i][j]); if (!st) { printf("Error while importing the file.\n"); fclose(data); return -1; } } } fclose(data); } </code></pre> <p>I don't really where and how to start, I'm not really proficient in C and there seems to exist a lot of functions and mechanisms to do what I want but they all seem very complex and some are actually longer than the code I provided. </p> <p>If anyone can point me in the right direction that'd be great.</p>
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    1. COWhat does *"number = 2"* mean?
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    2. COI don't think I understand what a correct file looks like. All I can see is that `2` is always right.
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    3. CO@LihO the input number, it's the size in the code
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