New way but old method 😏

What do you mean ؟ 🤣

Wat

The header file Now you know about it Try it and see

English

It's not standard C++

Why Is it because it's old😢

Coffee key, [16/02/2021, 20:08] #include <stdio.h> int main() { int y; printf("Enter your year"); scanf ("%d",&y); if(y%4==0) printf ("your year is leap"); else printf ("your year is not leap"); return 0; } Is program me if me jo condition likhi he usme samaj nahi aa raha

Coffee key, [16/02/2021, 20:08] #include <stdio.h> int main() { int y; printf("Enter your year"); scanf ("%d",&y); if(y%4==0) printf ("your year is leap"); else printf ("your year is not leap"); return 0; } Is program me if me jo condition likhi he usme samaj nahi aa raha

Coffee key, [16/02/2021, 20:08] #include <stdio.h> int main() { int y; printf("Enter your year"); scanf ("%d",&y); if(y%4==0) printf ("your year is leap"); else printf ("your year is not leap"); return 0; } Is program me if me jo condition likhi he usme samaj nahi aa raha

i don't understand your question dude :(

he saying if condition he can't undersatand

Anybody know how to read input of csv file in c program

Can u tell me to get output

Range based loop does not work with built-in arrays. You can only use it with STL collections.

so how would i pass that by reference in that example?

Range based loop does not work with built-in arrays. You can only use it with STL collections.

Because it's not in the standard

you mean vector? but in general, i was just trying to understand if there's anyway to make the range based loop work in this case? @khasanovasad . As I mentioned I am new to c++, so this is more for learning than anything else

Can anyone help for my test

I am so weak in programming.. Can u guys suggest me where to begin with!?

new to C++, why wouldn't this range based for loop work within a function? int sumArray(int arr[]) { int sum = 0; for(int i:arr) { sum += i; } return sum; }

new to C++, why wouldn't this range based for loop work within a function? int sumArray(int arr[]) { int sum = 0; for(int i:arr) { sum += i; } return sum; }

new to C++, why wouldn't this range based for loop work within a function? int sumArray(int arr[]) { int sum = 0; for(int i:arr) { sum += i; } return sum; }

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template <typename Container> int sumOfInts(Container&& c) { static_assert(std::is_same_v<decltype(*std::begin(c)), int>); // your code below }

He is a beginner

hola. gimme a hint on how to dive in cpp enough fast. my aim is to learn oop and patterns to switch after that back to dynamically typed python.

>C++ >Learn fast I'd suggest you to reconsider

new to C++, why wouldn't this range based for loop work within a function? int sumArray(int arr[]) { int sum = 0; for(int i:arr) { sum += i; } return sum; }

template <typename Container> int sumOfInts(Container&& c) { static_assert(std::is_same_v<decltype(*std::begin(c)), int>); // your code below }

#include <span> int sumArray(std::span<int> arr) { int sum = 0; for(int i : arr) { sum += i; } return sum; }

I'll learn what that code does

Mine is c++17 way of doing that. Whilst his is c++20

I understand that you believe it is straight forward. But I am still learning, I don't even understand stl completely yet

I understand that you believe it is straight forward. But I am still learning, I don't even understand stl completely yet

What that code does is accept "forwarding reference". Compiler knows whether you passed r or lvalue and accepts it I would not say it's actually a right way to implement your function. It does not make any sense to modify your object inside

Hmm

You should not really think about it at the begining. That stuff mostly only required for 3rd party libs or some specific cases. In your case just use std::array which is wraper over built-in arrays

That makes sense and that's what I did. Since I've got you, here's a question. I am learning c++ (almost done with basics including oop). Gradually the plan is to move to learning data structutes and algorithms. Happen to know any good books that actually explains "WHY"? For example, I know what a linked list is now, but it would have been way easier to understand if somebody had explained why you even need that to begin with instead of concentrating on how to use it.

Data structures have basically nothing with C++ in particular. It's a mathematical abstract subject. The fact you can "implement" them with programming language is just sort of luck. If you think about a dictionary (I mean a book) it is in fact a data structure (ordered vector) and you can use algorithm(binary search) by turning pages to find something really quickly. When you learn data structures you're not really learn language, rather you're understanding programming itself. If you have no experience in programming it's PROBABLY not the bad way to start. If you want to understand WHY you have to learn data structures then think for a second of a map(like Google map) - it does have a lot of objects binded to its coordinates (pair(x, y)), now you should have an ability to print all the objects within a given rectangle. How would you do that really practical task? Assuming you have millions of requests per second? Have you any ideas? Can you come up with any on your own? If you never heard about K-d trees I bet you'll never be able to solve it. You must at least know what data structures can and can't do and how fast they can solve you tasks.

Can you help me?