Sudoku Checker Program C : <p>I'm trying to complete a sudoku solution checker program in c. I'm still trying to understand the steps in building this program before I start coding it. I found this example online <a href="http://practicecprogram.blogspot.com/2014/10/c-program-to-find-out-if-solved-sudoku.html" rel="nofollow">http://practicecprogram.blogspot.com/2014/10/c-program-to-find-out-if-solved-sudoku.html</a></p>

<p>There are a few questions I still don't understand.</p>

<p>1 For my program I am given a text file with the first number being a number that says how many sets of sudoku solutions it contains. I am almost understanding how to check just one solution but having to do it for N solutions and making the program work for multiple sudoku solutions confuses me. Especially in making my 2d arrays for the values. My ouput is supposed to only be Yes or No on a new line for however many N sets.</p>

<p>2 Is checking that all rows and columns have sums of 45 and that the values are >0, &lt;10 enough to prove that the solution is valid? I'm assuming since every puzzle only has one solution I don't have to check each 3x3 grid to make it doesn't contain duplicates if each row and column sum to 45.</p>
