C ++堆栈溢出？

Question

I have written a recursive function (nextMove) that aims to find the way through a maze represented by a 12x12 matrix in a Win 32 console. Unfortunately when I try to run it using Visual Studio, the console session terminates abnormally after a couple of dozen iterations and disappears without giving me any info.

Is this a stack overflow?

It may be that because I am reading in a matrix, defining some variables and calling other functions within nextMove, that this is too much for the stack and knackers it...but I'm not sure.

The recursive function is below: (apologies in advance that it won't win any beauty / elegance contests as I am pretty new to programming)

void nextMove(char A[size][size], int lRow, int lCol, int cRow, int cCol)
{
    A[lRow][lCol] = '.';
    A[cRow][cCol] = 'X';
    printMatrix(A);
    if (isBorder(cRow, cCol)) { return; }
    else {
        int r, c; // temporary row and col
        int lastMove = move(cRow - lRow, cCol - lCol);
        for (int i = -1; i <= 2; i++) {
            r = cRow + row((lastMove + i) % 4);
            c = cCol + col((lastMove + i) % 4);
            if (allowableMove(A, r, c)) {
                nextMove(A, cRow, cCol, r, c);
                break;
            }
        } // end for
    } // end else
} // end nextMove

Answer 1

Apologies all, and thank you for your responses.

After more debugging I have found the answer to my question, and it is nothing to do with a stack overflow.

It was because I assumed that the C++ operator % works like the mathematical version of modular arithmetic, outputting only 0,1,...,n-1 (mod n).

When I realised that this is not the case ( -1 % 4 is -1, and not 3) I was able to modify my code to make the algorithm work correctly.

Thanks for all the help!