C

Introduction

Name	Preview	Code	Difficulty
“Hello World!” in C	This challenge will help you to learn to input some data and then output some data.	C	Easy
Playing With Characters	input character, string and a sentence	C	Easy
Sum and Difference of Two Numbers	Get started with data types.	C	Easy
Functions in C	Learn how to write functions in C++. Create a function to find the maximum of the four numbers.	C	Easy
Pointers in C	Learn how to declare pointers and use them.	C	Easy

Conditionals and Loops

Name	Preview	Code	Difficulty
Conditional Statements in C	Practice using chained conditional statements.	C	Easy
For Loop in C	Learn how to use for loop and print the output as per the given conditions	C	Easy
Sum of Digits of a Five Digit Number	to calculate the sum of digits of a five digit number.	C	Easy
Bitwise Operators	Apply everything we’ve learned in this bitwise operators’ challenge.	C	Easy
Printing Pattern using Loops		C	Medium

Arrays and Strings

Name	Preview	Code	Difficulty
1D Arrays in C	Create an array in c and sum the elements.	C	Medium
Array Reversal	Given an array, reverse it.	C	Medium
Printing Tokens	Given a sentence, print each word in a new line.	C	Medium
Digit Frequency	Given a very large number, count the frequency of each digit from [0-9]	C	Medium
Dynamic Array in C		C	Medium

Functions

Name	Preview	Code	Difficulty
Calculate the Nth term	Use recursion to solve this challenge.	C	Easy
Students Marks Sum	An easy challenge on pointers	C	Easy
Sorting Array of Strings		C	Hard
Permutations of Strings	Find all permutations of the string array.	C	Medium
Variadic functions in C		C	Medium
Querying the Document		C	Hard

Structs and Enums

Name	Preview	Code	Difficulty
Boxes through a Tunnel	Find the volume of short enough boxes.	C	Easy
Small Triangles, Large Triangles	Sort triangles by area	C	Medium
Post Transition	Manage post transactions in a country	C	Hard
Structuring the Document		C	Hard