0x02. C - Functions, nested loops

Description

What you should learn from this project:

• What are nested loops and how to use them
• What is a function and how do you use functions
• What is the difference between a declaration and a definition of a function
• What is a prototype
• Scope of variables
• What are the gcc flags -Wall -Werror -pedantic -Wextra
• What are header files and how to to use them with #include

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0. _putchar

• Write a program that prints Holberton, followed by a new line.

1. I sometimes suffer from insomnia. And when I can’t fall asleep, I play what I call the alphabet game

• Write a function that prints the alphabet, in lowercase, followed by a new line.

2. 10 x alphabet

• Write a function that prints 10 times the alphabet, in lowercase, followed by a new line.

3. islower

• Write a function that checks for lowercase character.

4. isalpha

• Write a function that checks for alphabetic character.

5. Sign

• Write a function that prints the sign of a number.

6. There is no such thing as absolute value in this world. You can only estimate what a thing is worth to you

• Write a function that computes the absolute value of an integer.

7. There are only 3 colors, 10 digits, and 7 notes; it’s what we do with them that’s important

• Write a function that prints the last digit of a number.

8. I’m federal agent Jack Bauer, and today is the longest day of my life

• Write a function that prints every minute of the day of Jack Bauer, starting from 00:00 to 23:59.

9. Learn your times table

• Write a function that prints the 9 times table, starting with 0.

10. a + b

• Write a function that adds two integers and returns the result.

11. Holberton School, 98 Battery Street, the OG

• Write a function that prints all natural numbers from n to 98, followed by a new line.

12. The World looks like a multiplication-table, or a mathematical equation, which, turn it how you will, balances itself

• Write a function that prints the n times table, starting with 0.

13. Nature made the natural numbers; All else is the work of women

• If we list all the natural numbers below 10 that are multiples of 3 or 5, we get 3, 5, 6 and 9. The sum of these multiples is 23. Write a program that computes and prints the sum of all the multiples of 3 or 5 below 1024 (excluded), followed by a new line.

14. In computer class, the first assignment was to write a program to print the first 100 Fibonacci numbers. Instead, I wrote a program that would steal passwords of students. My teacher gave me an A

• Write a program that prints the first 50 Fibonacci numbers, starting with 1 and 2, followed by a new line.

15. Even Liber Abbaci

• Each new term in the Fibonacci sequence is generated by adding the previous two terms. By starting with 1 and 2, the first 10 terms will be: 1, 2, 3, 5, 8, 13, 21, 34, 55, 89. By considering the terms in the Fibonacci sequence whose values do not exceed 4,000,000, write a program that finds and prints the sum of the even-valued terms, followed by a new line.

16. In computer class, the first assignment was to write a program to print the first 100 Fibonacci numbers. Instead, I wrote a program that would steal passwords of students. My teacher gave me an A+

• Write a program that finds and prints the first 98 Fibonacci numbers, starting with 1 and 2, followed by a new line.

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Author

• Geoffrey Zoref - Gzoref