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I originally had my draw function working with no errors, but giving wrong outputs. To test draw() with GDB, I tried making a separate file for draw().
The problem is this runtime error:
~/workspace/pset3/fifteen/ $ ./Untitled2 Untitled2.c:10:15: runtime error: variable length array bound evaluates to non-positive value 0 Untitled2.c:10:18: runtime error: variable length array bound evaluates to non-positive value 0

Thanks a lot,

What I have tried:

include <cs50.h>
include <stdio.h>
include <stdlib.h>
include <unistd.h>
int main(int argc, string argv[]) {
	int d = atoi(argv[0]);
	int board[d][d];
	for (int e = 0; e < d; e++) {
		for (int f = 0; f < d; f++) {
			if (!( ( e == d-1) && ( f == d-1) )) {
				printf("%2d", board[e][f]);
			if ( ( e == d-1) && ( f == d-1) )
				printf("%2c", '_');


		printf("\n %i", argc);
Updated 29-Dec-16 9:43am

So use the debugger and find out what the value is: the error message is pretty explicit:
variable length array bound evaluates to non-positive value
So d is zero or negative, which means that atoi returned that. so what is in argv[0] that evaluates to zero or a negative number?

Hint: the first parameter of a C application runtime arguments is the application exe name...
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You should learn to use the debugger as soon as possible. Rather than guessing what your code is doing, It is time to see your code executing and ensuring that it does what you expect.

Debugger - Wikipedia, the free encyclopedia[^]
Mastering Debugging in Visual Studio 2010 - A Beginner's Guide[^]

The debugger is here to show you what your code is doing and your task is to compare with what it should do.
There is no magic in the debugger, it don't find bugs, it just help you to. When the code don't do what is expected, you are close to a bug.
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