Write a c program to check whether a number is prime or not. Given an integer, We have to write an efficient code to check whether a number is prime or not.
Find first non-repeating character in a string
Given an input string, Write a code to find first Non-repeating character in a string. Suppose an input string is webrewrite, the first non-repeated character in this string is b.
Write a C program to print Fibonacci Series using recursion. Given an input number, we have to write a code to print Fibonacci series up to that number using Recursion.
This question is very important in terms of technical interviews.
You can check my previous post for PHP script to print Fibonacci series in PHP.
What is Recursion?
In recursion, A function calls itself until the base condition is reached. Recursive code is much cleaner and shorter as compared to iterative code.
For better understanding you can my previous post on recursion and what’s the difference between recursion and iteration.
For practice, you can solve Objective Question on Recursion
Pre-increment Vs Post-increment operators. What’s the difference between pre-increment (++i) and post-increment (i++) operators. In this post, we’ll learn how pre-increment and post-increment operators work in programming.
In this post, You’ll find MCQ which will help you to understand this concept fully.
How to swap two numbers using call by reference in C , C++. In the interviews interviewer generally asked the difference between call by reference and call by value. In this post let’s understand what is call by reference and how to swap two numbers using call by reference method.
Find Pair of Elements in Array whose Sum is Equal to given number. This is another very tricky/good question generally asked in technical interview. Given array might be sorted or unsorted it depends on the interviewer.
Write a program to count number of words in a string without using any function. This type of question generally asked by the interviewer to check the logic of a candidate.
Write a C, C++ program to print output without using a semicolon. It’s an interesting problem as in C, C++ every line is terminated with a semicolon. So, how do we write a program to print output without using a semicolon.
In this tutorial, We solve this problem using a little trick.