运行时检查失败#2 -关于变量“tempMatrix”的堆栈被损坏

I have been trying to run a function that gets a matrix, and rotate it 90 degrees clockwise. For some reason in the first 'for' in the function, 'b' adds 1 after reaching 2 value, after that works fine, but then the matrix is too big and getting that error. Can't understand why it doing additional ++.I have been trying to run a function that gets