# Blog : Online Interview Questions

##### Angular 5 Modal dialog example

Read how to add delete confirm box in Angular 4, Angular 5, Angular 6 modal dialog popup. In this article, we are going to see how to add a delete confirmation box in Angular Js we are using ngx-modal-dialog package in this example.

##### Scheduling CRON Jobs on Node js using node schedule

Cron Jobs are used for scheduling tasks to run on the server.CRON Jobs are the most commonly used method to automate tasks on Server. In this article, we will see how to schedule Jobs in Node.js. We are going to use node-schedule package for scheduling JOBS.

##### C program to insert an element in an array

This Program insert 50 at 4th index to the given array.

##### C program to find area of circle

A circle can be defined as a locus (a set of points in a particular position) of points that maintain equidistant from another point called the center. In this Program first of all User Enter the radius of the circle then it shows the area of the circle according to the given radius by using formula. Area is always squarely proportional to the radius.

##### C program to generate random number

Random numbers are numbers that occur in a sequence such that two conditions are met: (1) the values are uniformly distributed over a defined interval or set, and (2) it is impossible to predict future values based on past or present ones. Random numbers are important in statistical analysis and probability theory. After the successful compilation of the program, this program displays the following output: Ten random numbers in range [1-100] are as follows: 42, 68, 35, 1, 70, 25, 79, 59, 63, 65

##### C Program to Generate Fibonacci Series

In this Program, The first two elements are respectively started from 0 , 1, and the other numbers in the series are generated by adding the last two numbers of the series using looping. These numbers are stored in an array and printed as output.

##### Difference between NoSQL and SQL Databases

There are various SQL and NoSQL databases used in today’s world. SQL databases are the conventional type of databases which uses tabular relational model for the representation of data and its relationship. NoSQL is the new type of database. It provides a mechanism for storage and data retrieval other than tabular relations model used in a relational database. In this article, we are going to list few differences between NoSQL and SQL Databases

##### C Program to Find the Sum of First N Natural Numbers

In this article, We will discuss the C Program to Find the Sum of First N Natural Numbers. First of all I would like to explain what a natural number is? Then, I will demonstrate how to calculate the nth term of the natural number. Moreover, I would explain the logic to Find the Sum of First N Natural Numbers. Furthermore, I would write the logic and C Program to Find the Sum of First N Natural Numbers with output.

##### C program to get length of string

In this program, using a for loop, we have iterated over characters of the string from i = 0 to until '\0' (null character) is encountered. In each iteration, the value of i is increased by 1. When the loop ends, the length of the string will be stored in the i variable.

#### An Introduction to Serverless Databases Architecture

Understanding the Serverless Architecture: The serverless computing is a cloud computing execution model which means that the cloud provider is managing the distribution of computer resources dynamically. Read about Various Serverless Databases available in the market like Amazon Aurora Serverless, Google Cloud Store, FaunaDB, DynamoDB, RavenDB, MongoDB, CouchDB, JasDB with there Pros and Cons.

##### C program to find factorial of a number

The factorial of a positive number n is calculated by: The factorial of n (n!) = 1 * 2 * 3 * 4....n In this program we will find the factorial of a number where the number should be entered by the user. Factorial is sequence of a number whose multiply all previous number.

##### JavaScript get Current Date Time

In this tutorial, we are going to see How to get the current Date time in JavaScript. We are going to use Javascript library function Date(). We will take an example to see how to format javascript date to MySQL format Y-m-d and H:i:s format.

##### C program to generate multiplication table

After the successful compilation of the program, In this program, we used two variables num, and i. The variable num is used to store the input integer number and the variable ‘i’ is used to iterate the loop. Product of the number is given by num*i;

##### Highest paid programming languages in India

12 highest paid programming languages in India, no programming language solely can help you earn the highest pay unless you grasp the inner knowledge depth of the language.

##### C Program to find largest number among three numbers

In this program, three numbers are assigned in to the three variables one by one. Then, compare the two selected of them with the use of comparison operator. Repeat the same process for the other two. After the successful execution of the program the final largest number amongst the three are displayed on the screen.