All posts from August 2017

In this article we will learn about enumeration, which is a user defined data type. We use ‘enum’ keyword for its implementation. It is related to #define preprocessors in C/C++. It can also be defined to represent integer numbers.
C++ programming

Learn: How to overload subscript operator ([]) in C++ programming language? In this article, we are implementing method using subscript operator ([]) overloading.
C++ programming

In this world of growing technology, Google has become our dictionary. While this company has made life easy, it did not stop there. When everything was slowly shifting to the base of the internet, it also became one important mode of communication. That’s when emails caught rage and Google came up with its very own mailing system – Gmail. It also allowed us to attach files and folders to send across. But was it feasible and convenient enough? Were you allowed to attach files larger than 25 MB? Was it possible to always have a copy stored on your computer and keep sending edited files back and forth again and again?
Articles

In today’s technologically dependent life, who is far-fetched from the amazing feature of Google – The drive that it provides? Since the amazing Google Drive came into being, people have forgotten physical storages in computers and laptops...
Articles

Learn: What is Package? Learn how to create a Java Package, with its advantages?
Java

A certain family party consisted of 1 grandfather, 1 grandmother, 2 fathers, 2 mothers, 4 children, 3 grandchildren, 1 brother, 2 sisters, 2 sons, 2 daughters, 1 father-in-law, 1 mother-in-law, and 1 daughter-in-law. Twenty-three people, you will say. No; there were only seven persons present. Can you show how this might be?
Puzzles

Here, we will learn some of the warnings and errors in C++, while compiling and executing a C++ program, we found some error and warning messages, some of them are we will discuss here.
C++ programming

C++ - Function returning reference: Here, we will learn with a C++ program, how to return a reference from function?
C++ programming

In a fifty over one-day international match, 49.4 balls are bowled. Last two balls… Seven runs to win… it is ninth wicket partnership… Last two batsmen are at 94 runs each.
The team won and both batsmen made centuries. How could it be possible?
Puzzles

You are standing at the top of a 100 meter tall building, you have a rope 75 meters long and the only way you can come down is through the rope. You can cut the rope anywhereyou want, you also can tie or hook it at any point on the building, but you can’t jump and of course don’t even think about the stairs. Find out the best way to come down.
Puzzles

Of the many provisions that Google has provided for the internet savvy crowd, Google Drive is a great boon to store the artifacts and stash them securely. If 15 GB was available for your use and without any charges, wouldn’t that be a good start to store some of the important documents, photos, videos? So here’s what you need to know about Google Drive – what it has to offer and the process to kick start using it...
Articles

You have 12 gold coins of same weight except one, which weighs less than others. You are given a balance machine but no weighing measures. You can use the balance machine three times only. The balance machine tells you just which side weighs more. How can you find the odd coin just by weighing the available coins?
Puzzles

Amit Arrives in a small town and decide to get a haircut. There are only two barbershops in the town- one on East Lane and one on West Lane. The East Lane barbershop is a mess, and the barber has the worst haircut amit has ever seen. The WestLane barbershop is spick and span, its (barber’s) hair looks stylish as good as a model. In which barbershop does amit go for his haircut, and why?
Puzzles

Learn: What are Modules, Built-in and User Defined functions? In this article, we are going to learn about Modules, Built-in, User Defined functions in Python with Examples.
Python

Android code to make call from your own application: This article contains all source codes files related to this android project (code for calling from android mobile).
Android

Learn: What is top-down and bottom-up approach in programming languages? In this article we are going to learn programming approach with their advantages.
C++ programming

Learn: Classes which are used in C#.Net - file handling with explanation. In this article, we are writing list of the classes which are useful and important for file handling in C#.Net.
.Net

Learn: What is file handling in C#.Net? What are streams, type of streams, basic file operations and classes are used for file operations.
.Net

Swap two integer numbers in Java: Here, we will input two integer numbers and swap them through two methods 1) Using third variable and 2) without using third variable.
Java basic programs

Check EVEN or ODD in Java: In this program, we will input an integer number and check whether it is EVEN or ODD.
Java basic programs

Learn: In this article we learn the different function of file management of operating system. We learn the concept of file management function of operating system...
Operating Systems

Date.before() and Date.after() methods in Java: In this program, we are taking input two dates and comparing them using Date.before() and Date.after() methods.
Java Date & Time programs

SimpleDateFormat.parse() method in Java: In this program, we will learn how to convert Date string to Date format in Java?
Java Date & Time programs

Get current system date and time in Java: In this program, we are getting the system’s current date and time and printing in full format.
Java Date & Time programs

Math.pow() amd Math.sqrt() Methods in Java: In this program, we will take an integer number will find their Square, Cube and Square Root of given number through these methods?
Java basic programs

This is a simple java program, in which we are taking input of two integer numbers and calculate their SUM and AVERAGE.
Java basic programs

Through this program, we will learn how to read (input) an integer number from user and print the input value on the output screen?
Java basic programs

Here, we will learn how to print different type of values using Java program? In this program, we will declare and define different variables with values and print them.
Java basic programs

Learn: How to write, compile and execute our first program in Java, in this program we will print some text (Hello World) on the screen.
Java basic programs

Learn: How to convert a given character array to string? Here we will take a character array and string object, and then character array will be converted and assigned to the string object.
Java string programs

String.trim() method in Java: Here, we will learn how to trim a given string using String.trim() method in Java?
Java string programs

String.length() method in Java: Here, we will learn how to calculate/get the length of the string using String.length() in Java?
Java string programs

String.split() in Java: Here, we will learn how to split string in substrings separating by given delimiter in java?
Java string programs

String.startsWith() and String.endsWith() methods of String class: Here, we will learn how to check whether a string starts with a substring or not and whether a string ends with a substring or not?
Java string programs

In this program, we will learn how to replace a string with another string using String.replace() method of String class in Java?
Java string programs

In this program, there is an example in java where you will learn how to reverse a string with and without using StringBuffer.reverse() method?
Java string programs

Anuj lives 40 km far from his work place. He commonly uses local trains to travel between his home and his work place. One day Anuj late for his train If Anuj walks at the rate of 5 km / h, he misses the train by 6 minutes. However, if he walks at the rate of 6 km / h, he reaches the station 6 minutes before the arrival of the train. Find the distance between his house and station.
Puzzles

Learn: How to check whether a given string is empty or not using a java program? In this program we will use String.isEmpty() method to check given string is empty or not?
Java string programs

Here, we will learn how to get sub string from a given string using String.substring() method in Java? This method returns sub string from given start to end index.
Java string programs

Here, we will learn how to convert string into Lowercase and Uppercase using String.toLowerCase() and String.toUpperCase() methods in java.
Java string programs

String.valueOf() method - Here, you will learn how to convert any type of value like integer, float, etc to string using String.valueOf(), method which is a built-in method of String class.
Java string programs

String.CompareTo() method - Here, you will learn how to compare two strings in java using String.CompareTo() method which is a built-in method of String class.
Java string programs

Learn: How to extract digits of a number using C program without using modules and divide operator? Here, we will use a shortcut method to extract all digits of a number.
C Tips

Declaring and printing different constant in C++: Here, we will learn to declare and print the value of different type of constants using C++ program.
C++ programs

Print your name on output screen randomly with colored text and background color using C++ program: Here you will learn some of the in-built functions that are using to print randomly, colored, print text of specified position etc.
C++ programs

dos.h delay() function in C++: Here, we will learn about the delay() function of dos.h header file in C++ through a simple example/program.
C++ programs

Example of if-else statement in C++: In this program, we will take age of a persona and checking person is teenager or not and he is eligible for voting or not?
C++ programming

Example of Ternary/Conditional Operator in C++: using Example to check Leap year, we will learn what Ternary operator is, how it is works in C/C++?
C++ programming

Nested if-else statement in C++: In this example, we are taking a character from keyboard and checking whether it is Vowel or Consonant, before it we are checking it is valid alphabet or not?
C++ programming

Ladder if-else statement example in C++: program to enter a character and validate whether it is an alphabet or digit, here we are using ladder if-else (multiple if-else) form of conditional statements in C++.
C++ programming

A new defence colony is constructed in defence area. The builder of defence area is suffering from a problem that he doesn’t know that How many house number plates in a newly constructed defence colony can be made, if the no. plates have two letters of English alphabet followed by a two- digit no., if repetition of digits or alphabets is not allowed? He asked you to solve this problem. Now your task is to find out number of number plates which builder can create by applying above conditions.
Puzzles

A boy named Vivek is interested in solving alphabetical puzzles. He refers many different book in search of puzzle regarding alphabets. One day he found a unique puzzle based on alphabetical order. In the puzzle all the capital letters of the English alphabet from A to Z followed by the lower case letter from ‘a’ to ‘z’ are placed one in each slot, in 52 slots around a circle in clockwise direction. All the slots are counted in the clockwise direction starting with the slot containing A, and the letter in every fifth slot is removed. Now he has to find out that how many more slots will have letters left in them immediately after ‘m’ is removed from its slot?
Puzzles

Learn: In this article we are going to study about what are the various techniques used by operating system in memory management? What is Segmentation in Operating system? what is Paging in Operating system? What is Swapping in Operating system? How Operating system handle the memory management of computer system?
Operating Systems

Learn: In this article we are going to discuss about the file management of operating system. How files are managed in operating system? What are the uses of files management in operating system? What are the different operations performed by operating system in computer system?
Operating Systems

Learn: How to declare a constant in C/C++ programming language? Here you will find constant declaration syntax, explanation and example.
Syntax References

Overloading Binary minus (-) operator in C++: Using C++ program, here we will learn how to overload Binary minus operator using non-member or free function?
C++

Overloading Binary plus (+) operator in C++: Using C++ program, here we will learn how to overload Binary plus operator using non-member or free function?
C++

Post-decrement operator overloading in C++: Using C++ program, here we will learn how to overload post-decrement operator using non-member or free function?
C++

C program to swap two integer numbers without using temporary variable: Here, we will learn how to swap numbers without taking help of another variable in C?
C Basic I/O programs

A man entered a store and spent one-half of the money that was in his pocket.
When he came out, he found that he had just as many cents as he had dollars when he went in and half as many dollars as he had cents when he went in.
How much money did he have when he entered the store?
Puzzles

Learn: What are Network topologies? In this article we will see the various types of Network topologies with their advantages and disadvantages.
Computer Networks

Four friends Amit, Abhigyan, Abhishek and Deepak want to get through a tunnel. Abhishek can make it in 1 minute, Amit in 2 minutes, Abhigyan in 4 minutes and Deepak in 5 minutes. Unluckily through the narrow tunnel not more than two persons can go at once, moving at the speed of the slower one. Will they all be able to make it if they have a torch that lasts only 12 minutes and they have darkness phobia?
Puzzles

Learn: What are Network Protocol and Network Software? In this article, we will discuss their definition, tasks performed by protocols and software and their examples.
Computer Networks

Learn: What will be the correct form a variable declaration in C/C++ programming language? Here you will find the syntax and examples of variable declarations in C/C++.
Syntax References

A man sold 38 pieces of clothes. These 38 piece of cloths were divided into shirts, trouser, and ties. If he sold at least 11 pieces of each items and he sold more shirts than trousers, and more trousers than ties. Now you have to find out the number of ties that the man must have sold.
Puzzles

Roshan have a favorite number and he give some information regarding his number. The information is that the sum of square of the digits constituting a positive two- digit number is 13. If we subtract 9 from that number, we shall get the number written by the same digit in reverse order. Now you have to find Roshan’s favorite number.
Puzzles

A naughty boy Ayush watches Sachin Tendulkar’s innings and act according to number of runs scored by Sachin Tendulkar. Ayush have a basket which he used to put some fruits. As we know that Ayush acts according to number of runs scored by Sachin Tendulkar in an innings. The details of above information are given as follow...
Puzzles

Learn: How to perform input and output operations in python using suitable methods/functions with Examples in Python?
Python

Learn: How to overload pre-decrement operator by using the concept of nameless temporary objects in C++, this articles contains solved example on this concept?
C++

Learn: How to overload pre-increment operator by using the concept of nameless temporary objects in C++, this articles contains solved example on this concept?
C++

Learn: Through this article, learn about the variables and their types in Python. This article preferably describes about different data types and their variable declaration.
Python

Learn: In this article, we will focus on network classification based on the use of computer nodes. This article also comprises their types, architecture, advantages and disadvantages.
Computer Networks

A boy named Sushil have a fruits shop in Mumbai. In his fruit shop the cost of four mangoes, six guavas and sixteen watermelons is 500Rs, while the cost of seven mangoes, nine guavas and nineteen watermelons is 620Rs. Now Sushil needs your help to calculate the cost of one mango, one guava, and one watermelon.
Puzzles

Himanshu is interested in solving logical and mathematical problems. One day he got a problem in which he has to find out the greatest number of four digits that when the number is divided by any of the numbers 6, 9, 12, 17 leaves a reminder 1. Now himanshu needs your help to find the greatest four- digit number which satisfy above condition.
Puzzles

Deepak is an engineering student. He likes to plays with numbers. One day he asked a question to his friend Abhishek. Deepak said that he takes a two-digit integer number. He says that when he multiplies its two- digit integer by the sum of its digits, 405 is achieved. And If he multiplies its number written in reverse order of the same digits by the sum of digits, he get 486. Now Abhishek wants your help to find out the two-digit number taken by Deepak.
Puzzles

Some birds settle on the branch of tree. First, they sat in a manner that each bird sit on one branch. That means each branch contain a single bird. In this case a single bird left to sit or a single bird don’t get space to sit. Next day birds are sitting in a manner that two birds were sitting in a single branch. In this day a branch remains empty. Now you have to find out the minimum number of birds and branches.
Puzzles

SQL - CREATE Command: Here, we will learn how to create a database and a table using CREATE command in SQL?
SQL

C++ - Overload pre-decrement operator using non-member or free function: Here, we will learn to overload operator (pre-decrement) using non-member of free function with C++ program.
C++

C++ - Overload pre-increment operator using non-member or free function: Here, we will learn to overload operator (pre-increment) using non-member of free function with C++ program.
C++

Learn: What is Sieve of Eratosthenes? And how to find prime numbers using this algorithm? This article contain solved program in C++ based on Sieve of Eratosthenes algorithm.
Algorithms, C++ programs

Learn: What is SQL (Structure Query Language)? what are the basic terminologies of SQL?
SQL

String methods in Python (Set 2) : Here we will learn about predefined methods of String in Python with Examples and Explanations.
Python

Learn: In this article we will learn about Anchor Tag and some of its attributes with Example.
HTML

Learn: In this article we will learn some basic and most used tags (Heading Tags) and elements of HTML5.
HTML

Learn: In this article we will have a basic introduction to HTML, We will first discuss how to write your first HTML code?
HTML

Learn: In this article, we will learn how to execute our first program in Python in different modes?
Python

Learn: What is Computer Network? In this article, we will also discuss about the various types of computer Networks?
Computer Networks

String methods in Python: Here we will learn about predefined methods of String in Python with Examples and Explanations.
Python

Learn: What is the String in Python, string’s declarations, define and its implementation in Python with Examples and Explanations?
Python

Learn: In this first article we’ll discuss about the history, features and applications of the most powerful scripting language. We’ll also learn, How to setup Python interpreter(Python Shell).
Python

A boy named Krishna lives in Indore in hostel. Krishna’s father gives him pocket money in every 3 months. One day Krishna thinks that he should starts saving his pocket money and he decides to start saving his money for future. On 1^st January 2017, Krishna saved 1Rs. Everyday starting from 2^nd January 2017, he saved1Rs more than previous day. Now you have to find out the first date at which the amount saved by Krishna will be a perfect square?
Puzzles

A magic rectangular scarf shrinks its length to ½ and width 1/3 whenever its owner makes a wish. After three such wishes, its surface was 1 cm. What was the original width, if the original length was 4 cm?
Puzzles

LEARN: In this article, we will learn about the seven layered OSI Model and the related functions performed by the seven layers.
Computer Networks

Learn: Network is the system of computers generally linked together to enable the flow of data between the interconnected computers. With the help of network, we can access the data remotely. Some of the applications of a network are:
Computer Networks

Learn: In this article, learn about TCP/IP model and the functions performed by the different layers of the model.
Computer Networks

The Objective is to form the maximum possible time (in HH:MM:SS and 12 hour format) using any six of nine given single digits (not necessarily distinct).
C++ programs

Suppose you are in a room with 3 switches. In next to room there are 3 bulbs (in off state), each switch is link to some bulb. It is impossible to see from one room to another. Your task is to find out, which switch stand to which bulb, if you may enter the bulb room exactly once.
Puzzles

In Delhi a boy named Rohan lives. Rohan have a tea stall in Delhi which is run by his father. One day his father told Rohan to sit in the shop for a day. There are three traffic lights in front of its tea stall. The first light changes after 30 seconds, second light changes after 45 second and third light changes after 60 seconds. Rohan observes that after some time all three lights changes simultaneously. If the lights first switched on at 12: 00 PM, then you have to tell after how much time the lights changes simultaneously?
Puzzles

In Gwalior city a new cab company formed. This cab company has its own methodology to calculate the amount. The cab in Gwalior has following formula based upon its meter reading. The meter reading is rounded up to the next higher multiple of 4. For instance, if the meter reading is 39 paisa, then it is rounded up to 40 paisa. The resultant is multiplied by 12. The final result is round off to the nearest multiple of 25 paisa. Now you have to tell that if 45 paisaare meter reading of cab then how much amount customer have to pay.
Puzzles

Manish’s friends brought a cake for him on his birthday. The cake is completely round in shape. There are total eight persons including Manish in the Manish’s birthday party. Everyone wants cake and Manish is only allowing to do 3 straight cuts on cake. Besides he wants that everyone gets the same size of piece. Now you have to tell that how can Manish cut his cake so that each person in party get same amount of cake?
Puzzles

There is a pet shop in Delhi. There is a magical elephant in the shop. This elephant doubles in size every day. Abhigyan is interested in this elephant and he bought a baby elephant from the shop. In 10 days the size of elephant is enough to cover its room. Now you have to tell that how many days it takes to cover the room if Abhigyan brought 2 magic elephants?
Puzzles

String concatenation in C++ programming language: In this article, we are going to learn different ways to concatenate the strings.
C++

Overload unary pre-decrement operator and assign the value in another object in C++: Here, we will learn about the operator overloading with an example/program of unary pre-decrement operator in C++? Here, we will assign the decremented value to another object.
C++

Overload unary pre-decrement operator in C++: Here, we will learn about the operator overloading with an example/program of unary pre-decrement operator in C++?
C++

String.Replace() Method of String class in C#: Here, we will learn how to replace a character with another character in a string in C#?
.Net

String.Remove() Method of String class in C#: Here, we will learn how to remove a given substring from a string in C#?
.Net

String.EndsWith() Method of String class in C#: Here, we will learn how to check whether a given string ends with given string or not in C#?
.Net

String.PadRight() Method of String class in C#: Here, we will learn how to pad string from right with specific characters in C#?
.Net

String.PadLeft() Method of String class in C#: Here, we will learn how to pad string from left with specific characters in C#?
.Net

String.TrimEnd() Method of String Class in C#: Here, we will learn how to trim string from end (trailing)?
.Net

String.TrimStart() Method of String Class in C#: Here, we will learn how to trim string from start (leading)?
.Net

Learn: In this article, we are going to study about the memory management of computer system by operating system. We understand what are the different activities performed by memory management of operating system?
Operating Systems

Learn: In this article, we are going to study about the deadlock in the operating system. What is a deadlock? Why deadlock occurs? What are the various methods to avoid deadlock in the operating system?
Operating Systems

We are happy to announce that Mr. Amit Shukla is the Content Writer of the Month (July 2017) based on his Content Writing.
Content Writer of the Month

Learn: In this article we are going to discuss about the process synchronization in operating system and inter process communication. How can the operating system synchronize processes? What are the different solutions and algorithm used by the operating system in synchronizing processes of the operating system? What is inter process communication? What are the different methods used to maintain intercommunication?
Operating Systems

String.Split() Method of String Class in C#: Here, we will learn how to split a string in multiple strings using String.Split() method in C#?
.Net

String.LastIndexOf() Method of String class in C#: Here, we will learn how to find the last index of any substring in C#.Net using LastIndexOf() method?
.Net

Here, we will learn how to remove trailing and leading spaces from a string in C#.Net? There is a method of string class that is String.Trim() which removes the leading and trailing spaces. In this post we are going to understand with an Example.
.Net

Here, we will learn how to get substring from a given string using C# program? To get substring from a string there is a method of string class SubString() which takes starting index and total number of characters (length) to get.
.Net

Here, we will learn how to convert string into lowercase. To convert string into lowercase we have a predefined method of String class ToLower(), which returns the string in lowercase.
.Net

Here, we will learn how to convert string into uppercase. To convert string into uppercase we have a predefined method of String class ToUpper(), which returns the string in uppercase.
.Net