Summary of Program Purposes

---

Task 3.1: Simple Calculator

Purpose:
Performs arithmetic operations on two integers with a specified operator.

---

Task 3.2: Sum All Numbers

Purpose:
Sums multiple integer arguments, ignoring invalid inputs.

---

Task 3.3: Number Statistics

Purpose:
Calculates sum, average, minimum, maximum, and count of valid integers.

---

Task 3.4: Number Base Converter

Purpose:
Converts a number from one base to another among bases 2, 8, 10, and 16.

---

Task 4.1: String Length Counter

Purpose:
Prints length of each input string and total character count.

---

Task 4.2: String Operations

Purpose:
Applies an operation (upper, lower, reverse, concat) on input strings.

---

Task 4.3: Word Search

Purpose:
Case-insensitive search for a word in multiple text arguments.

---

Task 5.1: Simple Flags

Purpose:
Parses flags for verbose or help mode and processes filenames.

---

Task 5.2: Flags with Values

Purpose:
Parses flags with optional values and filenames.

---

Task 5.3: Mixed Arguments Parser

Purpose:
Parses flags and filenames in any order, rejects unknown flags.

---

Task 5.4: Configuration Override

Purpose:
Overrides default configuration settings via flags.

---

Task 6.1: File Display

Purpose:
Displays contents of files, printing filename before each.

---

Task 6.2: Simple File Statistics

Purpose: Analyzes one or more text files and prints the following statistics for each file: Filename

Size (in bytes)

Number of lines

Number of words

---

Task 6.3

Purpose: Searches for a word in one or more text files and prints each matching line with filename and line number.