Cheat Sheets Command Line Cheat Sheet Here we have narrowed down the most required 38 commands one require at command line. 1. Commands For Directories The below command display path of current working directory – Command to Change directory to <directory> Command to Navigate to parent directory Command to List directory contents Command to List detailed directory contents, includinghidden files Command […]
C Programs Linked List in C C Program to Create a Singly Linked List & Display the Elements in the List using function About the program Linked list as we know is an ordered set of data elements, each containing a link to its successor. Program #include <stdio.h> #include <stdlib.h> struct node { int num; struct node *nextptr; }*stnode; void createNodeList(int n); void displayList(); int main() { int n; printf("\n\n Singly Linked List\n"); printf(" Input the number of […]
Blog C program to convert and array in to string Heading Details details details Sub Heading more details Some description Method 1 #include <stdio.h> void main() { int m, n; printf("Enter the values for M and N\n"); scanf("%d %d", &m, &n); if (m == n) printf("M and N are equal\n"); else printf("M and N are not equal\n"); } Now here make sure this text is […]
DataStructure Introduction to Data Structure and Data Type Introduction The computer system is used essentially as Data Management System where ‘Data’ are very important thing for it. The data can be referred to in many ways such as data, data items, data structures etc. The data must be represented, stored, organized, processed and manage so as to support the user environment. All these […]
MongoDB Introduction to MongoDB MongoDB is a NoSQL database written in C,C++ and JavaScript. It’s an opensource document database developed by MongoDB Inc. The first version was released on 11th February 2009. MongoDB uses JSON like document and schema. Popularly MongoDB is used in MERN (MongoDB+ExpressJs+React&Redux+ NodeJs) and MEAN (MongoDB+ExpressJs+AngularJs+ NodeJs) Stacks. To work on MongoDB basic knowledge or […]
Loops in C++ C++ Program to Find Factorial For any positive number n, it’s factorial is given by: factorial = 1*2*3...*n Factorial of negative number cannot be found and factorial of 0 is 1. Program #include <iostream> using namespace std; int main() { unsigned int n; unsigned long long factorial = 1; cout << "Enter a positive integer: "; cin >> n; for(int […]
Basics in C++ C++ Program to Check Leap Year All years which are perfectly divisible by 4 are leap years except for century years (years ending with 00) which is leap year only it is perfectly divisible by 400. Program #include <iostream> using namespace std; int main() { int year; cout << "Enter a year: "; cin >> year; if (year % 4 == […]
Loops in C++ C++ Program to Calculate Sum of Natural Numbers Program #include <iostream> using namespace std; int main() { int n, sum = 0; cout << "Enter a positive integer: "; cin >> n; for (int i = 1; i <= n; ++i) { sum += i; } cout << "Sum = " << sum; return 0; } Output Enter a positive integer: 50 Sum […]
Basics in C++ C++ Program to Find Largest Number Among Three Numbers Program 1 using if only #include <iostream> using namespace std; int main() { float n1, n2, n3; cout << "Enter three numbers: "; cin >> n1 >> n2 >> n3; if(n1 >= n2 && n1 >= n3) { cout << "Largest number: " << n1; } if(n2 >= n1 && n2 >= n3) { cout […]
Basics in C++ C++ Program to Check Whether a character is Vowel or Consonant. Five alphabets a, e, i, o and u are known as vowels. All other alphabets except these 5 alphabets are known are consonants. Program #include <iostream> using namespace std; int main() { char c; int isLowercaseVowel, isUppercaseVowel; cout << "Enter an alphabet: "; cin >> c; // evaluates to 1 (true) if c is a […]
Basics in C++ C++ Program to Check Whether Number is Even or Odd Program 1 using if else statement #include <iostream> using namespace std; int main() { int n; cout << "Enter an integer: "; cin >> n; if ( n % 2 == 0) cout << n << " is even."; else cout << n << " is odd."; return 0; } Output Enter an integer: 23 […]
Basics in C++ C++ Program to Find All Roots of a Quadratic Equation For a quadratic equation ax2+bx+c = 0 (where a, b and c are coefficients), it’s roots is given by following the formula. The term b<sup>2</sup>-4ac is known as the discriminant of a quadratic equation. The discriminant tells the nature of the roots. If discriminant is greater than 0, the roots are real and different. If […]
Basics in C++ C++ Program to Multiply two Numbers Program #include <iostream> using namespace std; int main() { double firstNumber, secondNumber, productOfTwoNumbers; cout << "Enter two numbers: "; // Stores two floating point numbers in variable firstNumber and secondNumber respectively cin >> firstNumber >> secondNumber; // Performs multiplication and stores the result in variable productOfTwoNumbers productOfTwoNumbers = firstNumber * secondNumber; cout << "Product = […]
Basics in C++ C++ Program to Find ASCII Value of a Character A character variable holds ASCII value (an integer number between 0 and 127) rather than that character itself in C programming. That value is known as ASCII value. For example, ASCII value of ‘A’ is 65. What this means is that, if you assign ‘A’ to a character variable, 65 is stored in that variable […]
