C/C++ practice problems

1 Numbers and digits 8 lessons

1. Lesson 2 challenges Check a Prime Number Determine whether an integer is prime.
2. Lesson 1 challenge Fibonacci Sequence Generate the first ten Fibonacci numbers.
3. Lesson 1 challenge Calculate a Factorial Calculate a factorial with an iterative loop.
4. Lesson 2 challenges Greatest Common Divisor Find the greatest common divisor of two integers.
5. Lesson 1 challenge Check a Leap Year Determine whether a year is a leap year.
6. Lesson 1 challenge Decimal to Binary Convert a positive decimal integer to binary.
7. Lesson 1 challenge Temperature Converter Convert Celsius to Fahrenheit.
8. Lesson 1 challenge Simple Calculator Apply an arithmetic operator to two numbers.

2 Text problems 5 lessons

9. Lesson 1 challenge Reverse a String Reverse text without changing its characters.
10. Lesson 1 challenge Check a Palindrome Check whether a word reads the same in both directions.
11. Lesson 1 challenge Count Vowels Count vowels in a line of text.
12. Lesson 1 challenge Count Words Count whitespace-separated words in a sentence.
13. Lesson 1 challenge Character Frequency Count occurrences of each lowercase letter.

3 List problems 5 lessons

14. Lesson 1 challenge Sum Array Values Calculate the sum of all values in an array.
15. Lesson 2 challenges Find the Largest Array Value Find the maximum value in an array.
16. Lesson 1 challenge Find the Second Largest Value Find the second distinct largest array value.
17. Lesson 1 challenge Remove Duplicate Values Remove repeated array values while preserving order.
18. Lesson 2 challenges Transpose a Matrix Exchange matrix rows and columns.