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Author: JMK-WRL

0x01-variables_if_else_while/README.md

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-# Directory Name
+# ALX Low-Level Programming - 0x01. C - Variables, if, else, while
 
-0x01-variable_if_else_while
 
-# Directory Description
+## Table of Contents
+
+- [Exercise 0: Positive Anything Is Better Than Negative Nothing](#exercise-0-positive-anything-is-better-than-negative-nothing)
+- [Exercise 1: The Last Digit](#exercise-1-the-last-digit)
+- [Exercise 2: I Sometimes Suffer From Insomnia](#exercise-2-i-sometimes-suffer-from-insomnia)
+- [Exercise 3: alphABET](#exercise-3-alphabet)
+- [Exercise 4: When I Was Having That Alphabet Soup](#exercise-4-when-i-was-having-that-alphabet-soup)
+- [Exercise 5: Numbers](#exercise-5-numbers)
+- [Exercise 6: Numberz](#exercise-6-numberz)
+- [Exercise 7: Smile in the Mirror](#exercise-7-smile-in-the-mirror)
+- [Exercise 8: Hexadecimal](#exercise-8-hexadecimal)
+- [Exercise 9: Patience, Persistence and Perspiration](#exercise-9-patience-persistence-and-perspiration)
+- [Exercise 10: Inventing Is a Combination of Brains](#exercise-10-inventing-is-a-combination-of-brains)
+- [Exercise 11: The Success Combination in Business](#exercise-11-the-success-combination-in-business)
+- [Exercise 12: Software Is Eating the World](#exercise-12-software-is-eating-the-world)
+
+## Exercise 0: Positive Anything Is Better Than Negative Nothing
+
+**Objective:** This program assigns a random number to the variable `n` each time it's executed. The task is to complete the source code to print whether the number stored in `n` is positive or negative.
+
+**Explanation:** The program uses a random number generator to assign a value to the variable `n`. The completed source code should print whether `n` is positive, zero, or negative.
+
+...
+
+## Exercise 1: The Last Digit
+
+**Objective:** This program assigns a random number to the variable `n` each time it's executed. The task is to complete the source code to print the last digit of the number stored in `n`.
+
+**Explanation:** The program uses a random number generator to assign a value to the variable `n`. The completed source code should print the last digit of `n` and classify it as greater than 5, equal to 0, or less than 6 and not 0.
+
+...
+
+## Exercise 2: I Sometimes Suffer From Insomnia
+
+**Objective:** Write a program that prints the alphabet in lowercase, followed by a new line.
+
+**Explanation:** This program uses the `putchar` function to print each character of the lowercase alphabet. It iterates through the alphabet characters and prints them one by one using the `putchar` function.
+
+...
+
+## Exercise 3: alphABET
+
+**Objective:** Write a program that prints the alphabet in lowercase, followed by the alphabet in uppercase, each followed by a new line.
+
+**Explanation:** Similar to the previous exercise, this program uses the `putchar` function to print characters. It iterates through the lowercase alphabet and then the uppercase alphabet, printing each character using `putchar`.
+
+...
+
+## Exercise 4: When I Was Having That Alphabet Soup
+
+**Objective:** Write a program that prints the alphabet in lowercase, followed by a new line, while omitting the letters 'q' and 'e'.
+
+**Explanation:** This program iterates through the lowercase alphabet and prints each character using the `putchar` function, excluding the letters 'q' and 'e'.
+
+...
+
+## Exercise 5: Numbers
+
+**Objective:** Write a program that prints all single-digit numbers of base 10 starting from 0, followed by a new line.
+
+**Explanation:** This program uses a loop to iterate through the numbers 0 to 9 and prints each number using the `putchar` function.
+
+...
+
+## Exercise 6: Numberz
+
+**Objective:** Write a program that prints all single-digit numbers of base 10 starting from 0, followed by a new line.
+
+**Explanation:** Similar to the previous exercise, this program uses a loop to iterate through the numbers 0 to 9 and prints each number using the `putchar` function.
+
+...
+
+## Exercise 7: Smile in the Mirror
+
+**Objective:** Write a program that prints the lowercase alphabet in reverse, followed by a new line.
+
+**Explanation:** This program uses a loop to iterate through the lowercase alphabet characters in reverse order and prints each character using the `putchar` function.
+
+...
+
+## Exercise 8: Hexadecimal
+
+**Objective:** Write a program that prints all the numbers of base 16 in lowercase, followed by a new line.
+
+**Explanation:** This program uses a loop to iterate through the hexadecimal digits (0 to 15) and prints each digit as a character using the `putchar` function.
+
+...
+
+## Exercise 9: Patience, Persistence and Perspiration
+
+**Objective:** Write a program that prints all possible combinations of single-digit numbers, separated by a comma and space.
+
+**Explanation:** This program uses nested loops to generate and print all possible combinations of single-digit numbers separated by a comma and space.
+
+...
+
+## Exercise 10: Inventing Is a Combination of Brains
+
+**Objective (Advanced):** Write a program that prints all possible different combinations of two digits.
+
+**Explanation:** This program uses nested loops to generate and print all possible different combinations of two digits, while ensuring that each combination is unique.
+
+...
+
+## Exercise 11: The Success Combination in Business
+
+**Objective (Advanced):** Write a program that prints all possible different combinations of three digits.
+
+**Explanation:** This program uses nested loops to generate and print all possible different combinations of three digits, while ensuring that each combination is unique.
+
+...
+
+## Exercise 12: Software Is Eating the World
+
+**Objective (Advanced):** Write a program that prints all possible combinations of two two-digit numbers.
+
+**Explanation:** This program uses nested loops to generate and print all possible combinations of two two-digit numbers, while ensuring that each combination is unique.
+
+...
+
+Feel free to explore each exercise, understand the concepts, and modify the code as needed. Happy learning and coding!
 
-# Directory Content