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Server Side Programming Articles
Page 108 of 2107
File Handling through C++ Classes
In this tutorial, we will be discussing a program to understand File Handling through C++ classes. What's File Handling? File handling is an important concept in programming, which allows a program to read from and write to files. C++ has built-in classes and functions for file handling, which is done using file stream classes that are part of the library. The most common file stream classes in C++ are ofstream, ifstream, fstream. ofstream: This class is used for output file streams, where it allows the user to write data to files. ...
Read MoreHow to prevent class inheritance in C++
Here we will see how to prevent inheritance in C++. The concept of preventing inheritance is known as the final class. In Java or C#, we can use final classes. In C++ there are no such direct ways. Here we will see how to simulate the final class in C++. Approach Firstly, we will create one extra class called MakeFinalClass (its default constructor is private). This function is used to solve our purpose. The main Class MyClass can call the constructor of the MakeFinalClass as they are friend classes. One thing ...
Read MoreCount set bits in an integer in C++
We are given an integer number let’s say, num and the task is to first calculate the binary digit of a number and then calculate the total set bits of a number. Set bits in a binary number are represented by 1. Whenever we calculate the binary number of an integer value then it is formed as the combination of 0’s and 1’s. So, the digit 1 is known as a set bit in terms of the computer. Example 1 Input − int number = 50 Output − The count ...
Read MoreC program to print area of triangle, square, circle, rectangle and polygon using switch case.
Problem Write a program to calculate the area of triangle, square, circle, rectangle and polygon by using the switch case. Solution Based on case number, the area of triangle, square, circle, rectangle and polygon is calculated. The logic used to find area of triangle is as follows − Enter sides of a triangle a, b, c s=(float)(a+b+c)/2; area=(float)(sqrt(s*(s-a)*(s-b)*(s-c))); The logic used to find area of square is as follows − Enter the side of square at runtime. area=(float)side*side; The logic used to find ...
Read MoreHow to write a C program to find the roots of a quadratic equation?
Problem Applying the software development method to solve any problem in C Language. Solution Find roots of a quadratic equation, ax2+bx+c. There will be 2 roots for given quadratic equation. Analysis Input − a, b, c values Output − r1, r2 values Procedure $r_{1}=\frac{-b+\sqrt{b^2-4ac}}{2a}$ $r_{2}=\frac{-b-\sqrt{b^2-4ac}}{2a}$ Design (Algorithm) Start Read a, b, c values Compute d = b2 4ac if d > 0 then ...
Read MoreC program to sort an array in an ascending order
Problem Sort the given array in descending or ascending order based on the code that has been written. Solution An array is a group of related data items which share’s a common name. A particular value in an array is identified with the help of its "index number". Declaring array The syntax for declaring an array is as follows − datatype array_name [size]; For example, float marks [50] It declares ‘marks’ to be an array containing 50 float elements. int number[10] It declares the ‘number’ as an array to contain a maximum of 10 integer constants. Each element is identified ...
Read MoreJava program to find minimum sum of factors of a number
In mathematics, the factors of a number are the integers that divide the number without leaving a remainder. For a given number, finding the minimum sum of its factors involves identifying a pair of factors whose sum is the smallest among all possible factor pairs. In this article, we will learn to find the minimum sum of factors of a number we will be using the Integer class and Math class in Java − Integer class The Java Integer class serves as a wrapper for the primitive int type, encapsulating a single integer value within an object. For Integer.MAX_VALUE, which provides ...
Read MoreC++ program to convert the string into an integer
C++ is a statically typed language. To write programs we need to define variables of specified types. Sometimes we need to read inputs from the console or files. In such a scenario the string data are read into the program. To convert them into other datatypes needs special operations. In this article, we shall discuss how to convert strings to integers in C++. There are a few different techniques to do so. Let us explore them one by one. String to Integer Using stringstream Class C++ uses streams for different applications. Such streams are filestreams, standard input/output streams, etc. There ...
Read MoreHow to swap two arrays without using temporary variable in C language?
Swap two arrays without using a temporary variable. We will use arithmetic and bitwise Operators instead of a third variable. The logic to read the first array is as follows − printf("enter first array ele:"); for(i = 0; i < size; i++){ scanf("%d", &first[i]); } The logic to read the second array is as follows − printf("enter first array ele:"); for(i = 0; i < size; i++){ scanf("%d", &first[i]); } The logic to swap the two arrays without using a third variable is as follows − for(i = 0; i < size; i++){ ...
Read MoreHow to convert binary to Hex by using C language?
Binary numbers are represented in 1’s and 0’s. It can also be referred to as a rational number with a finite representation in the system. This is a quotient of an integer by a power of two. Hexadecimal number system with 16 digits is {0, 1, 2, 3…..9, A(10), B(11), ……F(15)}. In base 16 transfer encoding, each byte of plain text is divided into two 4-bit values, which are represented by two hexadecimal digits. Converting Binary to Hex using C To convert from binary to hexadecimal representation, the bit string is grouped into 4-bit blocks, called nibbles, starting from the ...
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