0-reset_to_98.c: Write a function that takes a pointer to an int as parameter and updates the value it points to to 98.

1-swap.c: Write a function that swaps the values of two integers.

2-strlen.c: Write a function that returns the length of a string.

3-puts.c: Write a function that prints a string, followed by a new line, to stdout.

4-print_rev.c: Write a function that prints a string, in reverse, followed by a new line.

5-rev_string.c: Write a function that reverses a string.

6-puts2.c: Write a function that prints every other character of a string, starting with the first character, followed by a new line.

7-puts_half.c: Write a function that prints half of a string, followed by a new line.

8-print_array.c: Write a function that prints n elements of an array of integers, followed by a new line.

9-strcpy.c: Write a function that copies the string pointed to by src, including the terminating null byte (\0), to the buffer pointed to by dest.

100-atoi.c: Write a function that convert a string to an integer.

101-keygen.c: Create a program that generates random valid passwords for the program 101-crackme.