30 C Programming Basic Exercises for Beginners with Solutions

Master beginner C Programming skills with our comprehensive list of top 30 exercises. Dive into coding challenges that improve your understanding and proficiency in C Programming, setting a solid foundation for intermediate challenges. Start your journey to C Programming mastery today!

Learning Objectives:

By the end of these exercises, you will have a foundational understanding of C language basics, including variables, data types, control flow, and simple functions.

Exercise Instructions:

Start with the first exercise and attempt to solve it before checking the hint or solution.
Ensure you understand the logic behind each solution, as this will help you in more complex problems.
Use these exercises to reinforce your learning and identify areas that may require further study.

1. Calculate the area of a circle.

Required Input:

radius = 5

Expected Output:

Area = 78.54

Code In C

#include <stdio.h> int main() { float radius = 5; // Example input float area; // Logic to calculate area return 0; }

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2. Calculate the perimeter of a rectangle.

Required Input:

length = 10, width = 5

Expected Output:

Perimeter = 30

Code In C

#include <stdio.h> int main() { int length = 10, width = 5; int perimeter; // Logic to calculate perimeter return 0; }

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3. Calculate the average of three numbers.

Required Input:

num1 = 7, num2 = 13, num3 = 19

Expected Output:

Average = 13.0

Code In C

#include <stdio.h> int main() { int num1 = 7, num2 = 13, num3 = 19; float average; // Logic to calculate average return 0; }

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4. Check if a number is even or odd.

Required Input:

number = 42

Expected Output:

Even

Code In C

#include <stdio.h> int main() { int number = 42; // Logic to check even or odd return 0; }

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5. Find the larger of two numbers.

Required Input:

num1 = 5, num2 = 10

Expected Output:

Larger number = 10

Code In C

#include <stdio.h> int main() { int num1 = 5, num2 = 10; int larger; // Logic to find the larger number return 0; }

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6. Find the factorial of a number.

Required Input:

number = 5

Expected Output:

Factorial = 120

Code In C

#include <stdio.h> int main() { int number = 5; int factorial = 1; // Logic to calculate factorial return 0; }

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7. Reverse a three-digit number.

Required Input:

number = 123

Expected Output:

Reversed = 321

Code In C

#include <stdio.h> int main() { int number = 123; int reversed = 0; // Logic to reverse the number return 0; }

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8. Find the sum of digits of a three-digit number.

Required Input:

number = 345

Expected Output:

Sum = 12

Code In C

#include <stdio.h> int main() { int number = 345; int sum = 0; // Logic to find the sum of digits return 0; }

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9. Convert Celsius to Fahrenheit.

Required Input:

celsius = 25

Expected Output:

Fahrenheit = 77.0

Code In C

#include <stdio.h> int main() { float celsius = 25; float fahrenheit; // Logic to convert Celsius to Fahrenheit return 0; }

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10. Find the smallest of three numbers.

Required Input:

a = 5, b = 3, c = 9

Expected Output:

Smallest = 3

Code In C

#include <stdio.h> int main() { int a = 5, b = 3, c = 9; int smallest; // Logic to find smallest return 0; }

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