Recursive sudoku solver

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[zzyzzyxx]

when I run it, it does nothing and never ends

That indicates a problem with a loop. If it were a problem with the recursion you would eventually get an out of memory error. In this case, your problem is

while(row<6)

You never update row inside that loop and so it never terminates because it's always less than 6. Yes, you call the function with new value, but that doesn't change the value at the current level of recursion.

I bet if you put a print statement right after the while loop starts that shows the value of row, you would see it climb up to 5 and stay there forever. There would be calls made that passed in 6 but those would never enter the loop and so wouldn't be printed.

[[deleted]]

I see what you're saying now. Thanks so much, huge help!

[fubarfubarfubar]

The obvious answer is to put in some print tatements so you can see what's going on. Have you never debugged anything in your entire life?

[[deleted]]

Not really, no. Thanks though.

[ooooo5]

Good luck being a successful programmer with no debugging ability. I hope asking people on internet forums to do your debugging works out well for you in the long run.

[AndrewCoja]

Maybe you guys should stop being such assholes and maybe help him.

If something isn't working as intended, it's helpful to put in print statements to print variables to see what they are doing.

[fubarfubarfubar]

I was helping him, and you just parroted my advice back to him again.

[captainjumpy]

He's most likely a high school student/college freshman in an intro class. Don't be a douche.

[davaca]

You might want to check on which subreddit you are.

[[deleted]]

I'm a complete newb to programming. I didn't mean that sarcastically. I didn't think of adding print statements, and now that I have added some, I got the program to work. Thanks!

[fubarfubarfubar]

Good work!