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exercises: ft_swapcases, title, and interval_spaces.

Table of Contents

1. ft_swapcases
2. title
3. interval_spaces

ft_swapcases

Assignment Name: ft_swapcases

Objective:
Write a program that takes a string as an argument and prints it with the case of each alphabetical character swapped (lowercase becomes uppercase and vice versa). Non-alphabetical characters remain unchanged.

Expected Files: ft_swapcases.c

Allowed Functions: write

Example Usage:

$> ./ft_swapcases "Hello World!" | cat -e
hELLO wORLD!$
$> ./ft_swapcases "42School" | cat -e
42sCHOOL$
$> ./ft_swapcases "" | cat -e
$
$> ./ft_swapcases | cat -e
$

Notes:

• If no arguments are provided, the program should simply print a newline.
• Handle both uppercase and lowercase letters.
• The program directly prints the modified string to standard output.

---

title

Assignment Name: title

Objective:
Write a program that takes a string as an argument and displays the string with the first letter of each word capitalized. Words are separated by spaces, and all non-alphabetical characters remain unchanged.

Expected Files: title.c

Allowed Functions: write

Example Usage:

$> ./title "hello world" | cat -e
Hello World$
$> ./title "this is a test" | cat -e
This Is A Test$
$> ./title "this is 42a test" | cat -e
This Is 42a Test$
$> ./title "MY TITLE" | cat -e
MY TITLE$
$> ./title "" | cat -e
$
$> ./title | cat -e
$

Notes:

• If the number of arguments is not exactly one, the program should print only a newline.
• The program capitalizes the first letter of each word while leaving the rest of the string unchanged.

---

interval_spaces

Assignment Name: interval_spaces

Objective:
Write a program that takes a string as an argument and displays each of its alphabetical characters separated by three spaces. The last character should be followed directly by a newline, without any trailing spaces. Non-alphabetical characters should be ignored.

Expected Files: interval_spaces.c

Allowed Functions: write

Example Usage:

$> ./interval_spaces "abc" | cat -e
a   b   c$
$> ./interval_spaces "abc def" | cat -e
a   b   c   d   e   f$
$> ./interval_spaces "a1b2c3" | cat -e
a   b   c$
$> ./interval_spaces "Hello, World!" | cat -e
H   e   l   l   o   W   o   r   l   d$
$> ./interval_spaces "" | cat -e
$
$> ./interval_spaces | cat -e
$

Notes:

• If the number of arguments is not exactly one, the program should print only a newline.
• Non-alphabetical characters are ignored, and the output has no trailing spaces.