This course contains lots of challenges for C, each challenge is a small C project with detailed instructions and solutions. You can practice your C skills by solving these challenges, improve your problem-solving skills, and learn how to write clean and efficient code.
LabEx is an interactive, hands-on learning platform dedicated to coding and technology. It combines labs, AI assistance, and virtual machines to provide a no-video, practical learning experience.
- A strict “Learn by Doing” approach with exclusive hands-on labs and no videos.
- Interactive online environments within the browser, with automated step-by-step checks.
- A structured content organization with the Skill Tree based learning system.
- A growing learning resource of 30 Skill Trees and over 6,000 Labs.
- The AI learning assistant Labby, built on ChatGPT, providing a conversational learning experience.
Learn more about LabEx VM.
| Index | Name | Difficulty | Practice |
|---|---|---|---|
| 01 | 🎯 Escape from the Maze | ★☆☆ | Start Challenge |
| 02 | 🎯 Copy File Content | ★☆☆ | Start Challenge |
| 03 | 🎯 Printing a Sentence Multiple Times | ★☆☆ | Start Challenge |
| 04 | 🎯 Character Count in String | ★★☆ | Start Challenge |
| 05 | 🎯 Printing Even Numbers from Array | ★★☆ | Start Challenge |
| 06 | 🎯 Counting Vowels in a String | ★★☆ | Start Challenge |
| 07 | 🎯 Numbers excluding multiples of 3 | ★★☆ | Start Challenge |
| 08 | 🎯 Join Two Strings | ★☆☆ | Start Challenge |
| 09 | 🎯 Convert Between Kilometers and Miles Using C | ★☆☆ | Start Challenge |
| 10 | 🎯 Distribute Chocolates Among Kids | ★★☆ | Start Challenge |
| 11 | 🎯 Multiply Array Elements by Ten | ★★☆ | Start Challenge |
| 12 | 🎯 Swap Two Numbers using Temporary Variable | ★☆☆ | Start Challenge |
| 13 | 🎯 Alphabet Character Check | ★☆☆ | Start Challenge |
| 14 | 🎯 Calculating Rectangle Area | ★★☆ | Start Challenge |
| 15 | 🎯 Determine Cost Price Given Profit | ★☆☆ | Start Challenge |
| 16 | 🎯 Calculate Profit Given Cost and Selling Price | ★☆☆ | Start Challenge |
| 17 | 🎯 Centimeter to Feet Conversion | ★☆☆ | Start Challenge |
| 18 | 🎯 Fahrenheit to Celsius Converter | ★★☆ | Start Challenge |
| 19 | 🎯 Pound to Kilogram Converter | ★☆☆ | Start Challenge |
| 20 | 🎯 Calculate Cube Volume From Length | ★☆☆ | Start Challenge |
| 21 | 🎯 Find Maximum Possible Handshakes | ★☆☆ | Start Challenge |
| 22 | 🎯 Determining Even or Odd Numbers | ★☆☆ | Start Challenge |
| 23 | 🎯 Verify Leap Year Validity | ★☆☆ | Start Challenge |
| 24 | 🎯 Determine Number Positivity Negativity | ★☆☆ | Start Challenge |
| 25 | 🎯 Determining Youngest Brother from Ages | ★★☆ | Start Challenge |
| 26 | 🎯 Determining Student Grades | ★☆☆ | Start Challenge |
| 27 | 🎯 Check Voter Eligibility | ★☆☆ | Start Challenge |
| 28 | 🎯 Fizz Buzz Programming | ★★☆ | Start Challenge |
| 29 | 🎯 Determining Triangle Internal Angles | ★★☆ | Start Challenge |
| 30 | 🎯 Number Guessing Game: Check Guess | ★☆☆ | Start Challenge |
| 31 | 🎯 Calculating Mean Height of Football Team | ★★☆ | Start Challenge |
| 32 | 🎯 Calculate Sum of Natural Numbers | ★☆☆ | Start Challenge |
| 33 | 🎯 Iterative Digit Counting Challenge | ★★☆ | Start Challenge |
| 34 | 🎯 Calculate the Sum of Digits | ★★☆ | Start Challenge |
| 35 | 🎯 Abundant Number Detection | ★★★ | Start Challenge |
| 36 | 🎯 Verify Perfect Number Existence | ★★★ | Start Challenge |
| 37 | 🎯 Find Factors of Given Number | ★★☆ | Start Challenge |
| 38 | 🎯 Frequency of Characters in a String | ★★☆ | Start Challenge |
| 39 | 🎯 Finding the Greatest Common Divisor | ★★☆ | Start Challenge |
| 40 | 🎯 Finding Prime Numbers in a Range | ★★★ | Start Challenge |
| 41 | 🎯 Find Smallest Value In Array | ★☆☆ | Start Challenge |
| 42 | 🎯 Find Longer String | ★★★ | Start Challenge |
| 43 | 🎯 Checking for Harshad Numbers | ★★★ | Start Challenge |
| 44 | 🎯 Determine Self-Dividing Number | ★★★ | Start Challenge |
| 45 | 🎯 Calculate Area of Circle | ★☆☆ | Start Challenge |
| 46 | 🎯 Calculate Simple Interest Using Function | ★★★ | Start Challenge |
| 47 | 🎯 Finding the Greatest Factor | ★★☆ | Start Challenge |
| 48 | 🎯 Largest Multiple Under 100 | ★★☆ | Start Challenge |
| 49 | 🎯 Checking Prime Number Divisibility | ★★☆ | Start Challenge |
| 50 | 🎯 Sum All User Inputs | ★★☆ | Start Challenge |
| 51 | 🎯 Calculate Employee Bonus Amount | ★★★ | Start Challenge |
| 52 | 🎯 Calculate LCM of Two Numbers | ★★☆ | Start Challenge |
| 53 | 🎯 Factorial Calculation for a Number | ★★☆ | Start Challenge |
| 54 | 🎯 Calculate Student's Percentage | ★★☆ | Start Challenge |
| 55 | 🎯 Raising Numbers to Powers | ★★☆ | Start Challenge |
| 56 | 🎯 Create Multiplication Table Program | ★★☆ | Start Challenge |
| 57 | 🎯 Determining Armstrong Numbers | ★★☆ | Start Challenge |
| 58 | 🎯 Discover Armstrong Numbers in Range | ★★★ | Start Challenge |
| 59 | 🎯 Palindrome Number Determination | ★★★ | Start Challenge |
| 60 | 🎯 Implement Calculator with Switch-Case | ★★☆ | Start Challenge |
| 61 | 🎯 Calculating the Standard Deviation | ★★★ | Start Challenge |