matrix problem C++

Ephemeral · Posted: Thu Apr 16, 2025 1:34 pm Post subject: matrix problem C++

keep getting problems with this matrix im tring to implement in c++

Ephemeral · Posted: Thu Apr 16, 2025 1:50 pm Post subject:

nukes · Linux Guru Joined: 29 Aug 2025 Posts: 4558

well, { {1,1,1},{1,1,1},{1,1,1} } would be a int**.

While in terms of passing references around, pointers and arrays are equivalent - not in terms of the actual storage class.

the value of the matrix1 reference is constant, which is why you can't reassign it (it's not a pointer, it's the actual data).

it would be like saying something like

int x=1;
&x = 0xdeadbeef;

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Ephemeral · Posted: Thu Apr 16, 2025 11:21 pm Post subject:

thanks for that

Yes i was thinking i must have got something fundamentally wrong (or missed)...

This is my first forray into OO programming having spent a lot of time in Matlab (a weakly typed language)...

Looks like i need to spend some time reading about Pointers in C++

Trying to teach myself some C++ at home

platinummonkey · Archlinux i686 kernel26 2.6.32.10-1

Ephemeral · Posted: Tue Apr 21, 2025 2:11 pm Post subject:

Back with a new problem Laughing

Basically im trying to write my first proper function in c++

i want to do something like this

masinick · Posted: Tue Apr 21, 2025 2:59 pm Post subject:

Other than the cout statement, most of what you are doing are the kinds of things that can be implemented in the C programming language as well. If you have the classic C text from Prentice-Hall Software Series, "The C Programming Language, by Brian W. Kernighan and Dennis M. Ritchie (the author of C), provides a terse, functional description of how arrays and pointers work. If you either own that book, can borrow it, or have some kind of on-line way to read it, I recommend it, even though you are looking at C++ rather than C. The kind of thing you are doing is handled identically in C except for the I/O, which differs between C and C++. It is a relatively short book by reference book standards, with just over 200 pages of content, and it is considered one of, if not THE, classic C programming text.

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Ephemeral · Posted: Sat Apr 25, 2025 11:26 am Post subject:

Yeah, thanks, ive spent a while trawling through for info on the book..

It does seem the majority of people still hold it with high regard...

Maybe its time to get that melting credit card out again Very Happy

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