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C++ vs Objective-C: What are the differences?
Key Differences Between C++ and Objective-C
C++ and Objective-C are both object-oriented programming languages that are widely used in software development. While they share some similarities, they also have several key differences. Let's explore these differences in detail:
Syntax: One of the primary differences between C++ and Objective-C is their syntax. C++ uses a more traditional programming syntax, similar to C, while Objective-C has a unique syntax that is different from most popular programming languages. Objective-C uses a Smalltalk-like syntax, with the inclusion of square brackets to call methods and different keywords for declaring objects.
Memory Management: Another significant difference lies in memory management. In C++, developers need to manually manage memory using pointers, allocate and deallocate memory using "new" and "delete" keywords. In contrast, Objective-C uses a different approach called Automatic Reference Counting (ARC), which automatically tracks and manages the memory of objects, reducing the chances of memory leaks and other memory-related issues.
Platform: C++ is a cross-platform language that can be used to develop applications for diverse platforms, including desktop, mobile, and embedded systems. On the other hand, Objective-C was initially developed by Apple for macOS and iOS development. While it is possible to use Objective-C on other platforms, it is primarily associated with Apple's ecosystem.
Standard Libraries: C++ has a rich set of standard libraries that provide a wide range of functionalities for developers. These libraries include the Standard Template Library (STL), which offers data structures and algorithms, among others. In contrast, Objective-C does not have as extensive a set of standard libraries as C++, although it does provide some foundational libraries for iOS and macOS development.
Inheritance and Polymorphism: In C++, inheritance and polymorphism are integral concepts that facilitate code reuse and enable dynamic binding. C++ supports multiple inheritance, where a class can inherit from multiple base classes. Objective-C, on the other hand, uses a different approach called "protocols" to achieve similar behavior. Protocols allow objects to declare methods that other objects can adopt without requiring a strict hierarchal relationship.
Exception Handling: Exception handling is another area where C++ and Objective-C differ. In C++, exceptions can be thrown and caught using the try-catch statement, enabling developers to handle exceptional situations. Objective-C, however, takes a different approach and does not natively support exceptions. Instead, error handling in Objective-C is usually done through return codes or delegate objects.
In summary, C++ and Objective-C differ in syntax, memory management, platform support, standard libraries, inheritance approach, and exception handling. These differences make the choice between the two languages crucial depending on the specific requirements of the application being developed.
I will use Elixir for personal projects. It's productive, reliable, secure, simple, etc. But when performance is critical, I need job opportunities, when I work with mutability, which do I pick? I need advice on which "bureaucratic, mainstream" programming language to pick when wanting performance and jobs. Elixir is often "slow", and it hasn't boomed yet the way Golang and Rust have, so which?
Well for those performant tasks maybe you can use Rust nifs for elixir. Elixir enables to write fault-tolerant, scalable code for concurrent systems, and as such, it is perfect for messaging systems and web applications that might need to handle a lot of users efficiently. But if you need speed you can plug in Rust or write a microservice using Goland/Rust.
include include int main(){ char name[10], pasword[10]; printf("enter you user name :"); gets(name); printf("enter your pasword : "); gets(pasword); printf("your name : %s \n your password : %s \n", name, pasword); if ( name != "youcef") { printf("name undefined\n"); } else { printf("finde name"); }
}
his not working
You will want to do a few things here. First, replace gets
with fgets
. Then, you're going to want to use strcmp
from string.h to compare the input with the desired result. The code listed below has been updated with a working example with the previously mentioned recommendations. This isn't perfect and there are other ways to accomplish the same task. Explore other options that are available when you have a chance and see if you can improve on this example.
#include <stdio.h>
#include <string.h>
int main()
{
char name[10],
pasword[10];
printf("enter you user name :");
// Use fgets as gets is insecure and can easily lead to buffer overflow exploits
fgets(name, sizeof(char) * sizeof(name), stdin);
// Remove \n from fgets stdin read with null character so as to not have to include
// in strcmp later.
name[strlen(name) - 1] = '\0';
printf("enter your pasword : ");
fgets(pasword, sizeof(char) * sizeof(pasword), stdin);
printf("your name : %s \n your password : %s \n", name, pasword);
// If strcmp result > 0 || < 0 it's not a match
if (strcmp(name, "youcef") != 0)
{
printf("name undefined\n");
}
else
{
printf("finde name");
}
}
Dear, Yusuf You can't use if statement to compare two strings, but you can use strcmp() function which means string compare The behavior of strcmp function is: If (string1 < string2)? Then: return a negative value. If (string1 > string2)? Then: return a positive value.
If(string1 == string2)? Then: return (0).So, you can modify this statment to: if(strcmp(name,"Yousef") != 0) printf("name undefined\n");
else printf("find name");But, In this case there is one logic problem that (strcmp) function don't ignore the letter case. For example: If you input name : yousef
The first letter here (y) is small, but in the comparing statement above is capital, So the result will be "name undefined", but in fact "yousef" = "Yousef".To solve this problem you should use stracasecmp() function. This function ignore the letter case while comparing. The code will be: if(strcasecmp(name,"Yousef") != 0) printf("name undefined\n");
else printf("find name");Attention: Include string libreary after using these functions to skip any problem may be found.
includemay Allah bless you ^_^
Hello, I am interested in learning how to program. I am a beginner, and many articles saying I should go with Python if I am new to programming. I considered Lua a long time ago, but for my career, I believe major programming languages should be better for me. I'm considering Python at this moment, but if you have other tools I should use, let me know.
Although Lua is a very simple,efficient, elegant and welcoming language, Python is extremely versatile. Therefore, if you want to get into programming without a defined direction, Python is the way to go. It has a lot of libraries, the ability to do anything and it is closer to other languages than Lua is (yeah I know about Lua and C, but from a learner's point of view, it makes sense). Additionally, Python will be a marketable skill, but I for one have not yet seen job offers for Lua devs.
The language you choose is also dependant on the type of career / area of programming you wish to focus on: Web Based and mobile applicaitons I would lean towards Java, PC Applications I tend to like C#, Embedded industry C, C++
my advice , you should answer me for this question, what do you like to work: web base or mobile native or cross platform. if you like web base you should choose PHP or ASP.net or Node.js or if you like mobile native you should decide Android or IOS platform and else if you like cross platfrom you should learn Flutter with dart language. thanks
Hi, I'm just starting to learn code, and I stumbled upon this website. I think I should learn JavaScript, Python, and C++ to begin with. I'm a quick learner so I am only worried about what would be more useful. Suppose my goal is to build an online clothing store or something. Then what languages would be best? I need advice. Please help me out. I'm 13 and just beginning and it's hard to understand when people use technical terms so please keep it simple. Thanks a lot.
Go with Python. It's syntax is really simple and less verbose compare to others. You can use Python for basically anything like web dev, task automation, data science, data engineering, cybersecurity etc. At initial level, it's more important to get an understanding of programming fundamentals. Once you get conformable with coding in general, then you can explore other languages.
I would worry less about languages when you're first starting out. If you want to build an online store, then javascript is a great language that is used all over the web! Get comfortable with your first language, learn some computer science concepts and how to build things the right way, and then just work towards a goal and learn as you go!
https://www.w3schools.com/ is a great resource and it's completely free, everything you need to know to build a website is on that page if you have the drive to learn it. Best of luck to you!
Here's a neat roadmap too, in case you find yourself lost on what to learn next https://roadmap.sh/frontend
I recommend JavaScript to build your first website, for both FrontEnd and BackEnd , even tho I am a BIG fan of C++ it is not well suited yet to create websites, and Python would be just as good for the BackEnd as JavaScript but having everything written in only one language will make your learning curve way easier, so it is easy to recommend JavaScript.
Python is an easy and beginner-friendly language. As you've mentioned about Online Clothing store, you'll need to deal with the website part and you'll need Javascript to make the site accessible and functional. Javascript will be more easy to learn if you learn Python first, so you can just start with Python.
Hello Rachel, as a fellow programmer, I am glad that you are planning on expanding your coding knowledge and skills.
I recommend learning python first as it has a very simple syntax (syntax is how your code looks and how simple it is to type) and is also very user-friendly. Once you get to know how to code in python, you can use this thing called Flask.
Flask is what you call a "web application framework" or a WAF, it basically is a tool used to develop websites and other similar things. You don't have to worry much about it's difficulty because it is based on python. You will still have to learn how to use Flask though as it could be a bit complicating in first glance.If you are looking for simpler ways for making website without having to learn a lot of programming, you can learn HTML and CSS. These 2 will help you in making a basic and functional website. The catch is, from a career perspective, HTML won't get you far, as literally every programmer knows it. So it is best to use programming languages.
I hope this gave you a clear understanding of the ways in which you can build websites. Wishing you the best of luck!
I have worked with all these a ton. I make ecommerce and enterprise apps now. The only one of these you need is JavaScript. You can use JS on the backend as Node.js in AWS Lambda. You will need HTML and CSS skills, as well as a database. I recommend MongoDB. Please forget about C++ until you built your first company. Python fits the same purpose as Node.js but is currently popular in the Data Science community so skip it until you have a LOT of customers.
Since you're new, I'd recommend Javascript and Python. With Javascript, just learn React and Node. And with Python, learn Django. With JavaScript, Node, React, Python, and Django; you can accomplish quite a lot for both frontend and backend.
Hi, When saying that "Suppose my goal is to build an online clothing store or something", I would go for a ready to use platform like Wordpress. it will give you a fast jump into the online world. By using WP you'll have to catch on with PHP\JQuery Goodluck.. Ping me when store is ready, I might buy something....
Expo was a tool Macombey really wanted to utilize from the beginning. I have been working with React Native since 2016 and originally I had to use simulators in Xcode, install pods on top of node packages, configure certificates, and more abundant objectives that take time away from actual development. As a development studio, we have to move quick and get projects to our clients and partners in a matter of months.
Expo made this easy for us. We now have a mobile app for clients to download and test their project on, there is no need to install pods or configure Xcode, and development is super fast and reliable now.
I had a goal to create the simplest accounting software for Mac and Windows to help small businesses in Canada.
This led me to a long 2 years of exploration of the best language that could provide these features:
- Great overall productivity
- International wide-spread usage for long-term sustainability and easy to find documentation
- Versatility for creating websites and desktop softwares
- Enjoyable developper experience
- Ability to create good looking modern UIs
- Job openings with this language
I tried Python, Java, C# and C++ without finding what I was looking for.
When I discovered Javascript, I really knew it was the right language to use. Thinking of this today makes me realize even more how great a decision this has been to learn, use and master Javascript. It has been a fun, challenging and productive road on which I am still satisfied.
Obviously, when I refer to Javascript, it is not without implying the vast ecosystem around it. For me, JS is a whole universe in which almost every imaginable tools exist. It's awesome - for real. Thanks to all the contributors which have made it possible.
To be even clearer about how intense I am with Javascript, let's just say that my first passion was music. Until, I find coding with Javascript! Yep, I know!
So in conclusion, I chose Javascript because it is versatile, enjoyable, widely used, productive for both desktop softwares and websites with ability to create modern great looking user interfaces (assuming HTML and CSS are involved) and finally there are job openings.
Python has become the most popular language for machine learning right now since almost all machine learning tools provide service for this language, and it is really to use since it has many build-in objects like Hashtable. In C, you need to implement everything by yourself.
C++ is one of the most popular programming languages in graphics. It has many fancy libraries like eigen to help us process matrix. I have many previous projects about graphics based on C++ and this time, we also need to deal with graphics since we need to analyze movements of the human body. C++ has much more advantages than Java. C++ uses only compiler, whereas Java uses compiler and interpreter in both. C++ supports both operator overloading and method overloading whereas Java only supports method overloading. C++ supports manual object management with the help of new and delete keywords whereas Java has built-in automatic garbage collection.
1 code deploys for both: Android and iOS. There is a huge community behind React Native. And one of the best things is Expo. Expo uses React Native to make everything even more and more simple. Awesome technologies. Some other important thing is that while using React Native, you are reusing all JavaScript knowledge you have in your team. You can move easily a frontend dev to develop mobile applications.
A huge PRO of Expo, is that it includes a full building process. You run 1 line in the terminal, and 10 minutes after you have 2 builds done. Double check EAS Expo.
As a personal research project I wanted to add post-quantum crypto KEM (key encapsulation) algorithms and new symmetric crypto session algorithms to openssh. I found the openssh code and its channel/context management extremely complex.
Concurrently, I was learning Go. It occurred to me that Go's excellent standard library, including crypto libraries, plus its much safer memory model and string/buffer handling would be better suited to a secure remote shell solution. So I started from scratch, writing a clean-room Go-based solution, without regard for ssh compatibility. Interactive and token-based login, secure copy and tunnels.
Of course, it needs a proper security audit for side channel attacks, protocol vulnerabilities and so on -- but I was impressed by how much simpler a client-server application with crypto and complex terminal handling was in Go.
$ sloc openssh-portable Languages Files Code Comment Blank Total CodeLns Total 502 112982 14327 15705 143014 100.0% C 389 105938 13349 14416 133703 93.5% Shell 92 6118 937 1129 8184 5.7% Make 16 468 37 131 636 0.4% AWK 1 363 0 7 370 0.3% C++ 3 79 4 18 101 0.1% Conf 1 16 0 4 20 0.0% $ sloc xs Languages Files Code Comment Blank Total CodeLns Total 34 3658 1231 655 5544 100.0% Go 19 3230 1199 507 4936 89.0% Markdown 2 181 0 76 257 4.6% Make 7 148 4 50 202 3.6% YAML 1 39 0 5 44 0.8% Text 1 30 0 7 37 0.7% Modula 1 16 0 2 18 0.3% Shell 3 14 28 8 50 0.9%
Pros of C++
- Performance202
- Control over memory allocation107
- Cross-platform98
- Fast97
- Object oriented84
- Industry standard58
- Smart pointers47
- Templates37
- Gui toolkits16
- Raii16
- Generic programming13
- Control13
- Flexibility13
- Metaprogramming11
- Hardcore9
- Many large libraries5
- Simple5
- Full-fledged containers/collections API5
- Large number of Libraries4
- Performant multi-paradigm language4
- Way too complicated3
- Close to Reality1
- Plenty of useful features1
Pros of Objective-C
- Ios212
- Xcode115
- Backed by apple62
- Osx47
- Interface builder40
- Good old fashioned ooe with a modern twist10
- Goober, please2
- Object-oriented1
- Handles well null values (no NullPointerExceptions)1
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Cons of C++
- Slow compilation8
- Unsafe8
- Over-complicated6
- Fragile ABI6
- No standard/mainstream dependency management5
- Templates mess with compilation units4
- Too low level for most tasks3
- Compile time features are a mess1
- Template metaprogramming is insane1
- Segfaults1
- Unreal engine1
Cons of Objective-C
- UNREADABLE1