We can find the smallest and second smallest element of an integers array using the c language. This question is also important and asks by the interviewer in an interview. Let’s take an example, suppose there are an integer array iaData of 5 integers. int iaData[5] = {3, 5, 123, 6, 1}; Here the smallest […]
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In this article, I am writing a c code to generate the map of INDIA. This program is an example of obfuscated code in C language. Here we will take an encoded long string. The long string is simply a binary sequence of characters. Here string is a run-length encoding of the map of India.
Code to generate the map of India using the c language. Read More »
In the interview generally, Interviewer asked the question to reverse a string without the using the c library function or maybe they can mention more condition, it totally depends on the interviewer. In this article, I will discuss several techniques to reverse a string. I hope you guys like it. Here I am assuming you
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In the interview generally, bit reversal is the common question for the interviewer. There are several methods to reverse the bits of an integer. If you have good knowledge of unary operators then bit reversal is a very simple question for you otherwise, it can be difficult. So it is my personal advice before looking
5 way to reverse bits of an integer Read More »
In this blog post, I will teach you how to write C/C++ program to check if two integers have opposite signs or not. After reading this post you able to check whether given two integers have opposite signs or not. But before writing the C program to how to check whether two given integers have
5 Ways to Check if Two Integers have Opposite Signs Read More »
Previously we have read how to find prime number using C code, here we will learn how to find the all prime number up to n. A prime number is a positive natural number, whose value greater than 1 and it has only two factors 1 and the number itself. Either you can say that
Find prime numbers up to n using trial division and Sieve of Eratosthenes algorithm Read More »
Do you know you can use a function pointer in the structure? I assume your answer is “YES” but however if your answer is “NO”, then it is my recommendation that you should read the article “How to use the structure of function pointer in C?” In this blog post, I will explain the different
Different uses of function pointers and structure together Read More »
A prime number is a positive natural number, whose value greater than 1 and it has only two factors 1 and the number itself. Either you can say that prime numbers only divided by itself and 1. Any positive natural number who is not a prime number is called a composite number. For example, 2,3,5,7,11.. In
How to find whether a given number is prime number? Read More »
The volatile keyword is a qualifier it has a lot of importance in the programming language but problem is that many programmers are not aware of how to use the volatile keyword and when need to qualify a variable from the volatile keyword. Most of the textbooks don’t give importance to this topic either and
volatile keyword in C ( or volatile qualifier in C) Read More »
Factorial is used in many areas of mathematics but mainly used in permutation and combination. Factorial is the product of the all positive number from 1 to n (user entered number). In simple words, we can say that factorial of n would be 1*2*3*…..*n. Note: There is no factorial exist for the negative number and
5 ways to find factorial of number in c programming Read More »