Taking an online test to practise programming. They give me code that takes two 3x3 matrices as inputs and outputs a third. I have to multiply them together and ouput results.

Within minutes I've worked my head around it, got four lines of code to do it all. Output fails.

Twenty minutes later, nearly failing the time limit I find out that they couldn't output the array proplerly in C++

Are3[I, j];

;( What a hair puller.