Info Tech Vishnuvardhan

HACKING What is Hacking? Hacking is identifying weakness in computer systems or networks to exploit its weaknesses to gain access . Example of Hacking: Using password cracking algorithm to gain access to a system Computers have become mandatory to run a successful businesses. It is not enough to have isolated computers systems; they need to be networked to facilitate communication with external businesses. This exposes them to the outside world and hacking. Hacking means using computers to commit fraudulent acts such as fraud, privacy invasion, stealing corporate/personal data, etc. Cyber crimes cost many organizations millions of dollars every year. Businesses need to protect themselves against such attacks. Before we go any further, let’s look at some of the most commonly used terminologies in the world of hacking. Who is a Hacker? Types of Hackers A  Hacker  is a person who finds and exploits the weakness in computer systems and/or ...

              HISTROY OF DOGS In honor of National Dog Day, ABC News looked back at how our furry four-legged companions evolved from feral wolves into our best friends. It was originally believed the first domesticated wolves appeared around 15,000 years ago in the Middle East. New evidence, however, suggests it was much earlier than that. Swedish geneticist Pontus Skoglund published a study last year in the journal Current Biology , describing his findings of a 35,000-year-old Siberian wolf bone. He concluded that canine domestication may have first occurred 27,000 to 40,000 years ago. According to genetic studies, modern day domesticated dogs originated in China, the Middle East and Eastern Europe. According to Greger Larson, an archeologist and geneticist, gray wolves were domesticated by humans somewhere in western Eurasia. He surmises people in the East were also domesticating wolves at t...

INFIX EXPRESSION TO POSTFIX #include<stdio.h> #include<string.h> char stack[50]; int top=-1; void post(char infix[]); void push(char); char pop(); void main() {     char infix[25];     printf("\nENTER THE INFIX EXPRESSION = ");     gets(infix);     post(infix);     getch(); } void push(char symb) {     if(top>=49)     {           printf("\nSTACK OVERFLOW");          getch();          return;     }     else     {           top=top+1;          stack[top]=symb;     } } char pop() { ...

     POSTFIX EXPRESSION #include<stdio.h> int stack[20]; int top = -1; void push(int x) { stack[++top] = x; } int pop() { return stack[top--]; } int main() { char exp[20]; char *e; int n1,n2,n3,num; printf("Enter the expression :: "); scanf("%s",exp); e = exp; while(*e != '\0') { if(isdigit(*e)) { num = *e - 48; push(num); } else { n1 = pop(); n2 = pop(); switch(*e) { case '+': { n3 = n1 + n2; break; } case '-': { ...

                            HISTROY OF JAVA History of Java History of Java Java Version History The history of Java is very interesting. Java was originally designed for interactive television, but it was too advanced technology for the digital cable television industry at the time. The history of java starts with Green Team. Java team members (also known as Green Team ), initiated this project to develop a language for digital devices such as set-top boxes, televisions, etc. However, it was suited for internet programming. Later, Java technology was incorporated by Netscape. The principles for creating Java programming were "Simple, Robust, Portable, Platform-independent, Secured, High Performance, Multithreaded, Architecture Neutral, Object-Oriented, Interpreted and Dynamic". Currently, Java is used in internet progra...

                                  JAVA Java Tutorial Our core Java programming tutorial is designed for students and working professionals. Java is an object-oriented , class-based, concurrent, secured and general-purpose computer-programming language. It is a widely used robust technology. What is Java Java is a programming language and a platform . Java is a high level, robust, object-oriented and secure programming language. Platform : Any hardware or software environment in which a program runs, is known as a platform. Since Java has a runtime environment (JRE) and API, it is called a platform. Java Example Let's have a quick look at Java programming example. A detailed description of hello Java example is available in next page. class  Simple{        ...

                History Of C++ History of C++ language  is interesting to know. Here we are going to discuss brief history of C++ language. C++ programming language  was developed in 1980 by Bjarne Stroustrup at bell laboratories of AT&T (American Telephone & Telegraph), located in U.S.A. Bjarne Stroustrup  is known as the  founder of C++ language. It was develop for adding a feature of  OOP (Object Oriented Programming)  in C without significantly changing the C component. C++ programming is "relative" (called a superset) of C, it means any valid C program is also a valid C++ program. Let's see the programming languages that were developed before C++ language. Language Year Developed By Algol 1960 International Group BCPL 1967 Martin Richard B 1970 Ken Thompson Traditional C 1972 Dennis Ritchie K & R C 1978 Kernighan & Dennis Ritchie C++ 1980 Bjarne Stroustrup ...

                C (vs) C++ These Points Are Differences Between C And C++ Language  No. C C++ 1) C follows the  procedural style programming. C++ is multi-paradigm. It supports both  procedural and object oriented. 2) Data is less secured in C. In C++, you can use modifiers for class members to make it inaccessible for outside users. 3) C follows the  top-down approach. C++ follows the  bottom-up approach. 4) C does not support function overloading. C++ supports function overloading. 5) In C, you can't use functions in structure. In C++, you can use functions in structure. 6) C does not support reference variables. C++ supports reference variables. 7) In C,  scanf() and printf()  are mainly used for input/output. C++ mainly uses stream  cin and cout  to perform input and output operations. 8) Operator overloading is not possible in C. Operator overloading is possible in C++. 9) C prog...