The Ultimate C Guide for Beginners in 2020.

C is a high-level structured oriented programming language, used in general-purpose programming, developed by Dennis Ritchie.

In the beginning, C was used for developing system applications, e.g. :

  • Database Systems
  • Language Interpreters
  • Compilers and Assemblers
  • Operating Systems

Getting Started

To start learning C programming, you only have to install the C compiler in your system, and nowadays C and C++ both compilers come as a single integrated package, which serves the purpose of C and C++ both program development.

#technology #programming-languages #programming #c #guides-and-tutorials

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The Ultimate C Guide for Beginners in 2020.
Brain  Crist

Brain Crist

1594753020

Citrix Bugs Allow Unauthenticated Code Injection, Data Theft

Multiple vulnerabilities in the Citrix Application Delivery Controller (ADC) and Gateway would allow code injection, information disclosure and denial of service, the networking vendor announced Tuesday. Four of the bugs are exploitable by an unauthenticated, remote attacker.

The Citrix products (formerly known as NetScaler ADC and Gateway) are used for application-aware traffic management and secure remote access, respectively, and are installed in at least 80,000 companies in 158 countries, according to a December assessment from Positive Technologies.

Other flaws announced Tuesday also affect Citrix SD-WAN WANOP appliances, models 4000-WO, 4100-WO, 5000-WO and 5100-WO.

Attacks on the management interface of the products could result in system compromise by an unauthenticated user on the management network; or system compromise through cross-site scripting (XSS). Attackers could also create a download link for the device which, if downloaded and then executed by an unauthenticated user on the management network, could result in the compromise of a local computer.

“Customers who have configured their systems in accordance with Citrix recommendations [i.e., to have this interface separated from the network and protected by a firewall] have significantly reduced their risk from attacks to the management interface,” according to the vendor.

Threat actors could also mount attacks on Virtual IPs (VIPs). VIPs, among other things, are used to provide users with a unique IP address for communicating with network resources for applications that do not allow multiple connections or users from the same IP address.

The VIP attacks include denial of service against either the Gateway or Authentication virtual servers by an unauthenticated user; or remote port scanning of the internal network by an authenticated Citrix Gateway user.

“Attackers can only discern whether a TLS connection is possible with the port and cannot communicate further with the end devices,” according to the critical Citrix advisory. “Customers who have not enabled either the Gateway or Authentication virtual servers are not at risk from attacks that are applicable to those servers. Other virtual servers e.g. load balancing and content switching virtual servers are not affected by these issues.”

A final vulnerability has been found in Citrix Gateway Plug-in for Linux that would allow a local logged-on user of a Linux system with that plug-in installed to elevate their privileges to an administrator account on that computer, the company said.

#vulnerabilities #adc #citrix #code injection #critical advisory #cve-2020-8187 #cve-2020-8190 #cve-2020-8191 #cve-2020-8193 #cve-2020-8194 #cve-2020-8195 #cve-2020-8196 #cve-2020-8197 #cve-2020-8198 #cve-2020-8199 #denial of service #gateway #information disclosure #patches #security advisory #security bugs

Sival Alethea

Sival Alethea

1624305600

C++ Tutorial for Beginners - Full Course. DO NOT MISS!!!

This course will give you a full introduction into all of the core concepts in C++.
⭐️ Contents ⭐
⌨️ (0:00:00) Introduction
⌨️ (0:01:38) Windows Installation
⌨️ (0:04:54) Mac Installation
⌨️ (0:08:44) Setup & Hello World
⌨️ (0:12:29) Drawing a Shape
⌨️ (0:19:55) Variables
⌨️ (0:31:43) Data Types
⌨️ (0:39:15) Working With Strings
⌨️ (0:49:00) Working With Numbers
⌨️ (0:59:41) Getting User Input
⌨️ (1:05:32) Building a Calculator
⌨️ (1:09:28) Building a Mad Libs
⌨️ (1:13:45) Arrays
⌨️ (1:20:03) Functions
⌨️ (1:29:47) Return Statement
⌨️ (1:35:22) If Statements
⌨️ (1:47:15) If Statements (con’t)
⌨️ (1:55:58) Building a Better Calculator
⌨️ (2:02:20) Switch Statements
⌨️ (2:10:47) While Loops
⌨️ (2:18:53) Building a Guessing Game
⌨️ (2:29:18) For Loops
⌨️ (2:38:32) Exponent Function
⌨️ (2:45:21) 2d Arrays & Nested Loops
⌨️ (2:54:55) Comments
⌨️ (2:59:11) Pointers
⌨️ (3:13:26) Classes & Objects
⌨️ (3:25:40) Constructor Functions
⌨️ (3:34:41) Object Functions
⌨️ (3:41:43) Getters & Setters
⌨️ (3:54:04) Inheritance

Course developed by Mike Dane. Check out his YouTube channel for more great programming
📺 The video in this post was made by freeCodeCamp.org
The origin of the article: https://www.youtube.com/watch?v=vLnPwxZdW4Y&list=PLWKjhJtqVAblfum5WiQblKPwIbqYXkDoC&index=10
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#c++ #c++ tutorial #c++ tutorial for beginners #c++ tutorial for beginners - full course #core concepts in c++.

Ilene  Jerde

Ilene Jerde

1598247504

The Ultimate C++ Guide For Beginners in 2020.

C++ is a high-level programming language developed by Bjarne Stroustrup. C++ is one of the most popular programming languages for graphical applications, such as those that run in Windows and Macintosh environments.

Getting Started

For developing in C++, you will need two things:

  • A text editor, like Notepad, to write C++ code
  • A compiler, like GCC, to translate the C++ code into a language that the computer will understand

The best way to achieve an editor and compiler in one is Codeblocks. If you have installed Codeblocks, we can start writing code.

#c-plus-plus-language #tech #programming #guide #2020

Ari  Bogisich

Ari Bogisich

1598597443

The Ultimate C Guide for Beginners in 2020

Image for post

C is a high-level structured oriented programming language, used in general-purpose programming, developed by Dennis Ritchie. In the beginning, C was used for developing system applications including:

  • Database systems
  • Language interpreters
  • Compilers and assemblers
  • Operating systems

Getting Started

To start learning C programming, you only have to install the C compiler in your system. Nowadays C and C++ both compilers come as a single integrated package that serves the purpose of C and C++ both program development.

The best way to achieve an editor and compiler in one is Codeblocks. If you have installed Codeblocks, we can start writing code.

Tokens

In C programs, each word and punctuation is referred to as a “token”. C Tokens are the smallest building block or smallest unit of a C program.

Identifiers

Identifiers are names given to different entities such as constants, variables, structures, functions, etc.

int price;  
double totalprice;

Keywords

The C keywords must be in your information because you can not use them as a variable name.

#include<stdio.h> 

main() {

float a, b; 
  printf("Showing how keywords are used."); 
  return 0;
}

In the above program, “float” and “return” are keywords. The float is used to declare variables, and return is used to return an integer type value in this program.

Constants

Constants are like a variable, except that their value never changes during execution once defined.

const type constant_name;

For example:

#include<stdio.h> 

 main() {  

  const int SIDE = 10;   
  int area;   
  area = SIDE*SIDE;   
  printf("The area of the square with side: %d is: %d sq. units"   ,    SIDE, area); 
}

#technology #programming-languages #c #guides-and-tutorials #programming-c

Ari  Bogisich

Ari Bogisich

1590141753

A Complete Guide to fread() in C/C++

In this article, we’ll take a look at using fread() in C/C++.

The fread() function is very useful if you want to store the contents of reading a file into a buffer. Let’s take a look at how we can use this function, using some illustrative examples!

#c programming #c++ #c# #c