m1 is a object Matrix that contains a matrix3D

Then use methods to operate with matrix inside object. What's the problem?

But I don't know how to select the elements of the matrix contained in the objects

I think you get this code from somewhere and don't know how to work with that.

Then use methods to operate with matrix inside object. What's the problem?

I don't know how to do, If I had known I would not have asked

I think you get this code from somewhere and don't know how to work with that.

No, I wrote it

I don't know how to do, If I had known I would not have asked

Then write methods to work with matrix elements !

Then write methods to work with matrix elements !

...

I don't know how to do, If I had known I would not have asked

Are u banned from google ? Can't google it step by step ?

This is the problem, I don't know how to select these elements

Are u banned from google ? Can't google it step by step ?

I searched but there were other examples not explained

This is the problem, I don't know how to select these elements

Read about arrays before and operations with them.

This is the problem, I don't know how to select these elements

To select the matrix contained in this object, not the operations with array

To select the matrix contained in this object, not the operations with array

My God...

To select the matrix contained in this object, not the operations with array

U don't know how to work with arrays. If you don't know, u can't work with matrices.

U don't know how to work with arrays. If you don't know, u can't work with matrices.

Yes I know, I don't know how to work with the elements of classes

It's different I know how to do this sum, but i can't "takes" the matrices contained in the objects

Yes I know, I don't know how to work with the elements of classes

Okay. Then go learn about OOP.

U don't know it.

U don't know it.

Okay(?)

Okay(?)

Especially how to work with class members.

Especially how to work with class members.

Thanks for the help(?)

It's different I know how to do this sum, but i can't "takes" the matrices contained in the objects

Start by designing the class, and setting the internal structure of it

Thanks for the help(?)

That's need for you, if u want to be a programmer.

Still I dont know why they have to dynamic allocate everything

That's need for you, if u want to be a programmer.

I have already read a lot of times, I know the theory more or less and now I was trying to do this exercise to put it into practice, I encountered this difficulty, I looked for people with similar problems or explanations from various parts but I did not find nothing. Rereading the slides again with the explanations of class theory I don't see how it should help me

Still I dont know why they have to dynamic allocate everything

I T 'S A N E X E R C I S E

I have already read a lot of times, I know the theory more or less and now I was trying to do this exercise to put it into practice, I encountered this difficulty, I looked for people with similar problems or explanations from various parts but I did not find nothing. Rereading the slides again with the explanations of class theory I don't see how it should help me

Then programming it's not your thing.

I´ve seen horrible things in my life: auto add_floats(float a, float b) -> float { return a + b; } auto main(void) -> signed { float* a = new float(3.14f); float* b = new float(2.44f); float* c = new float(); *c = add_floats(*a, *b); delete a, delete b; print("%f", *c); delete c; } I dont know who wrote this but I would call him the Dynalloc Psycho!

I T 'S A N E X E R C I S E

The beep test is an exercise designed to measure aerobic fitness

Then programming it's not your thing.

Mhhh

Is this your help? Okay

Come on guys - stop beeing so toxic

Come on guys - stop beeing so toxic

hello, i'm newbee, who can help me? I try to use "scanf" function, but i get "missed returned value". (Visual Studio) scanf("%d", &symbol);

no one knows?

no one knows?

Is it an error or a warning?

Is it an error or a warning?

error: error C4996: 'scanf': This function or variable may be unsafe. Consider using scanf_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details. note: см. объявление "scanf"

It says it pretty clear. Your compiler doesn't like scanf

Missed a returned value

Hey guys I already know C language and now I want to extend my knowledge to C++ so which book is best to start learning C++ best in the sense which gives reference and comparision with C and not covering same topic in depth again like pointers, arrays etc..

psst

Missed a returned value

Lol why you don't use monospace font

void fun(int arr[]) { int i; int arr_size = sizeof(arr)/sizeof(arr[0]); printf("%d\n",sizeof(arr)); printf("%d\n",sizeof(arr[0])); for (i = 0; i < arr_size; i++) printf("%d ", arr[i]); } int main() { int i; int arr[4] = {10, 20 ,30, 40}; fun(arr); return 0; }

OUTPUT produces 8 4 and 10 20

can someone explain me how 8 is the size of the array

Wtf

Don't use sizeof/sizeof

It doesn't work

Use a variable to pass the size

OUTPUT produces 8 4 and 10 20

why are you trying to calculate the size of array when you already know? pass an extra argument in the function for array size

why are you trying to calculate the size of array when you already know? pass an extra argument in the function for array size

This was a tell the output kind of the question...

Well as off now i know.. That pointer to the array Iss passed in the functions...

The size of variables depends on the system and the compiler you are using

So I was hoping that the pointer size will be 4 so 4/4 =1

OUTPUT produces 8 4 and 10 20

https://stackoverflow.com/questions/2331751/does-the-size-of-an-int-depend-on-the-compiler-and-or-processor

The size of variables depends on the system and the compiler you are using

Yeah.. Exactly can u please explain me more

Lol why you don't use monospace font

Stereospace

ohh damm i realize it just know

i got this

ohh damm i realize it just know

good for you😊👍

i was overlooking the fact that the pointer has a fixed addtress

that does not depend on the type

it is location of course

So I was hoping that the pointer size will be 4 so 4/4 =1

each int has 4bytes of space in most system so if thats the case sizeof(arr) will return 4*4 = 16 bytes

thank u guys ... KULDIP, SUNIL DANYA

thank u guys ... KULDIP, SUNIL DANYA

Lol Danya is nice Indian name

each int has 4bytes of space in most system so if thats the case sizeof(arr) will return 4*4 = 16 bytes

yeah... i understood this. thanks

Lol Danya is nice Indian name

ya lol 😂😂

i appreciate ur quick responses

Being an Indian, I too have seen this name for the first time... But pretty name

why are you trying to calculate the size of array when you already know? pass an extra argument in the function for array size

hey do anyone gonna suggest me a book?

hey do anyone gonna suggest me a book?

#cppbookguide

#cppbookguide

No man read my full question

No man read my full question

No man read the article

For data structure and algorithms, I have been using this book... pretty well explained.. Take a look Data Structures and Algorithms - Narasimha Karumanchi

No man read the article

Man I did already

Hey guys I already know C language and now I want to extend my knowledge to C++ so which book is best to start learning C++ best in the sense which gives reference and comparision with C and not covering same topic in depth again like pointers, arrays etc..

@Kuldip You should go for the book I mentioned