Challenge: Given an integer n, determine if n is a Fibonacci number. The output does not necessarily have to be true or false, just that the two cases should have distinct outputs. Cannot use a built in function that generates the Fibonacci sequence. Test Cases: 13 -> True 69 -> False 1597-> ...

This challenge is inspired by the 404 page on Stack Overflow, which contains a polyglot that outputs 404 in different languages. Goal Your goal is simple, to create a polyglot that outputs the number 404 in as many languages as possible. Restrictions Here's the twist, there's a restriction to...

I give you HelloWorld.java: /** * The HelloWorldApp class implements an application that * simply prints "Hello World!" to standard output. */ class HelloWorldApp { public static void main(String[] args) { System.out.println("Hello World!"); // Display the string. } } What i...

void main {char *s; s="hello"; printf("%d",s);//it prints hello } how is this possible ,since s is char pointer variable,so how do we are able to insert value directly int instead of address?

I was solving the 3rd problem at Project Euler which requires me to calculate the largest prime factor of 600851475143 which I think is a really large number (more than 6 billion). QB64 At first, I tried solving this problem using QB64. CLS n = 600851475143 FOR x = 1 TO n IF n MOD x = 0 ...

Inverse Radiation-Hardened Quine radiation-hardening code-golf A radiation-hardened quine is a program where if any character of the code is removed, the program will still print the original source code. Today, we're doing the opposite of that. Write a program that, when any single character i...

Definition Countdown is a game where the user is given 6 smaller numbers and a 3-digit target number. The objective is to use those 6 numbers and form the target number. You are allowed to use the four basic operators: + - * / and also ^. Use of parenthesis is also allowed. Challenge Your cha...

Recently I suggested having a feed in The Nineteenth Byte for new answers to the Hello, World! challenge. It received some support (as you can tell from the stars), but it was suggested that it be discussed on Meta first. I see advantages and disadvantages to having this feed, but I'll just stat...