Cengizhan
S@IF
So, basic algorithm is how many squares in N*N square?
N * N + (N-1) *(N-1) + ... 1 * 1 -> Calculate in C++.
that pic is complete question
S@IF
what is best algo for that
Cengizhan
I guess, for loop is the best algo. Whenever I write, it solves my problems.
S@IF
my mean equation
S@IF
i used
counter += pow(n, n)
Cengizhan
No, there is better way.
S@IF
could u solve it.
Cengizhan
counter = (n * (n+1) * (2n + 1)) / 6
S@IF
with complete code
S@IF
how could u think with that angle
means how u got...
S@IF
i tried so many to solve but i never think with such extend
S@IF
means how u got that algo
Cengizhan
I have a bronze medal from math olympics.
S@IF
i know some about this concept but never get into practical
S@IF
hey u solve with that concept.. or just directy got
S@IF
or understand algo
S@IF
okay.. thank you😊
Anonymous
i know some about this concept but never get into practical
Come to OT. I have a famous story related to this
Anonymous
;-; k
sree nandhan
sree nandhan
Oh. Okay 👍
sree nandhan
Thanks .
S@IF
could u just write the code.. it would help me
S@IF
it's okay... thank you for that all explanation
Anonymous
Guys I have a question... is It ok to call only one parameter of a function? (I'm programming on a textbook)
example:
----------------
procedure container ( value1, value3, value5 as Integer){
}
procedure test{
Int local_container
Int taker = container (value5 => local_container)
}
Anonymous
Guys I have a question... is It ok to call only one parameter of a function? (I'm programming on a textbook)
example:
----------------
procedure container ( value1, value3, value5 as Integer){
}
procedure test{
Int local_container
Int taker = container (value5 => local_container)
}
I'm not using pointer because I program in Ada.
There is no Ada group on telegram.
But I want to know if the main Idea is "legal". If I can do that
Anonymous
Or should I create a separated package that would contain value1 to value5 and call it externally?
Anonymous
I'm new to programming. I looked for it, but:
+ I found things about sql Because I didn't knew how look to express my problem. So that why I went to human to help me.
Anyway, thank you
Anonymous
We want to display rectangles ( 4 cm width * 3 cm hieght). The input is the number of the required rectangles.
Display them as the following:
Three rectangles in each row. Each row will be 14 cm because we separate rectangles by 1 cm and so the rows.
It must be solved by a mathematical equation to display the rectangles automatically.
Anonymous
I tried this but it's not good enough for this one:
#include <iostream> using namespace std; int main() { int rect; cin>>rect; int blocks, single, fill; single = rect%3; blocks = rect/3; fill = 14; for (int y=0; y<blocks+single; y++){ if (y==blocks) { fill = (single*4)+(single-1); if (single>1) single--;} for (int i=0; i<3; i++){ for (int j=0; j<fill; j++){ if (j==4||j==9) {cout<<' '; continue;} cout<<'*';} cout<<'\n'; } cout<<'\n'; } }
Patrick
We want to display rectangles ( 4 cm width * 3 cm hieght). The input is the number of the required rectangles.
Display them as the following:
Three rectangles in each row. Each row will be 14 cm because we separate rectangles by 1 cm and so the rows.
It must be solved by a mathematical equation to display the rectangles automatically.
Why are you struggling? What do you expect others to help you with exactly?
Xcix
Xcix
Nils
Youssef
Anonymous
Why are you struggling? What do you expect others to help you with exactly?
I want it solved mathematically. The person who talked about it said that it is enough for 9th grade students to solve it mathematically without any knowledge of programming.
Anonymous
I tried this but it's not good enough for this one:
#include <iostream> using namespace std; int main() { int rect; cin>>rect; int blocks, single, fill; single = rect%3; blocks = rect/3; fill = 14; for (int y=0; y<blocks+single; y++){ if (y==blocks) { fill = (single*4)+(single-1); if (single>1) single--;} for (int i=0; i<3; i++){ for (int j=0; j<fill; j++){ if (j==4||j==9) {cout<<' '; continue;} cout<<'*';} cout<<'\n'; } cout<<'\n'; } }
As it was explained to me, it seems like:
int rect; cin>>rect;
for (int i=0; i<rect; i++)
//TODO: a mathematical equation here.
And it must be done.
Anonymous
Halo guys
Anonymous
Hello, I want to do a little test
I wrote a little program in c++, it's just a simple number guessing game
I'm trying to follow programming best practices but I don't know if I did it the right way (I mean, it looks fine to me but I have 0 confidence because of my lack of experience)
Can I send the .cpp file here, so you can check it and suggest changes and improvements in my way of witting code?
Anonymous
Ya sure
Anonymous
Here it is 😅
Anonymous
I am a beginner start from zero about programming,can u guys help me please
Its so much thanks for u all
Anonymous
I am a beginner start from zero about programming,can u guys help me please
Its so much thanks for u all
Well, there's a cool website called: learncpp.com (no joke)
I'm learning with it
Anonymous
Anonymous
no problem
Anonymous
Anonymous
Tekipeps
what book is recommended to learn cpp from beginner to advanced please
Brown
How do I change a numbers precision by input number ?
Ex : If I want n digits after decimal. I want this n to be taken from input, scanf or something. How do I do it ?
Monday Morning
vinícius*
How do I change a numbers precision by input number ?
Ex : If I want n digits after decimal. I want this n to be taken from input, scanf or something. How do I do it ?
the specifier you're looking for is %.*f
vinícius*
float pi = 3.1415926535897;
int decimals = 2;
printf("%.*f", decimals, pi);
vinícius*
that'd print out 3.14
Monday Morning
Works like a charm.
vinícius*
only 'problem' is the weird usage of list initializers
vinícius*
like in int number{generate_random_int()};
int guess{};
vinícius*
it's definitely not wrong, but usually you'd do something like
vinícius*
int number = generate_random_int();
int guess;
vinícius*
like in int number{generate_random_int()};
int guess{};
the only downside to this is that it only exists after C++11, AFAIK
Anonymous
the only downside to this is that it only exists after C++11, AFAIK
Yeah, that's why I used them, I saw it in the course I'm following
And they said that this "brace initialization" was created in c++11
vinícius*
well
Anonymous
Is it a little overkill?
They told me the same thing in another programming group haha
vinícius*
it's not like anyone still cares about C++03 and older, so no problem
Anonymous
oh, well
Anonymous
I think it doesn't, let me check
vinícius*
test.c: In function ‘main’:
test.c:4:10: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘{’ token
float pi{3.1415926535897};
vinícius*
nope
Brown
the only downside to this is that it only exists after C++11, AFAIK
There is a set precision function in c++ for cout .
Anonymous
