About Matrix

[NAnNo]

hey guyz... i'm still in 1st grade so i'm kindda bla in c++...

anywayz.. i need a matrix program that can add, sub, multiply, n all... from 2 files the user is supposed the creat, BUT how can i make the prog check the files to see if they are vailed data for matrix operations, and how can i display them as in matrix (there are some display codes i lack).

XD thanx lots

[weaknessforcats]

Do you know the format of the data in the files?

Are they text files or binary files?

Are the values delimited wirth commas or spaces or some other delimiter?

What do you mean by valid? That there are numbers? That there are only values within a certain range?

etc...