I am making a C++ program that is written in C++ 11 and uses CMake. It is meant for doing calculations for
bending sheet metal / sheetmetal for pressbrakes, press brakes, brakeforms, breakforms, brake forms, break forms, forming and forming machinery and metalforming machinery and sheetmetal forming machinery.

The /BendCalc folder/directory includes:

CMakeLists.txt  data  docs  include  LICENSE  README.md  src  tests

data is a directcory
docs is a directory
include is a directory
LICENSE is the project license
README.md is for GitHub
src is a directory
tests is a directory

currently data is empty.  this is the place for stored data to and from the machine (using a paralel or serial pot or inputted from the user or saved by this program

docs is the documentation for the BendCalc program in markdown format. it contains 

BendAllowance.md  BendDeduction.md  KFactor.md  Setback.md  Tonnage.md

include contains header files:

BendAllowance.h  DataLoad.h  Deserializer.h  Kfactor.h     Setback.h
BendDeduction.h  DataSave.h  FormingTool.h   Serializer.h  Tonnage.h

src contains the cpp files:

BendAllowance.cpp  DataLoad.cpp  Deserializer.cpp  Kfactor.cpp  Serializer.cpp  Tonnage.cpp
BendDeduction.cpp  DataSave.cpp  FormingTool.cpp   main.cpp     Setback.cpp

main is the entrypoint to the program.  the rest are classes.

tests is currently empty and will be using google test 

CMakeLists.txt is currently 

cmake_minimum_required(VERSION 3.13.4)
project(BendCalc
VERSION 1.0.0
DESCRIPTION "An application for "
HOMEPAGE_URL "https://gitea.eventhorizonstudio.io/gbowne1/BendCalc"
LANGUAGES CXX)

include(CTest)
enable_testing()

# Set C++ standard
set(CMAKE_CXX_STANDARD 11)

set(CMAKE_BUILD_TYPE Debug)

set(CMAKE_EXPORT_COMPILE_COMMANDS ON)

add_compile_options(-g -Wall -Wextra -Werror -pedantic)

set(CMAKE_CXX_COMPILER /usr/bin/g++)

# Source files
set(SOURCES
    src/main.cpp
    src/Tonnage.cpp
    src/Setback.cpp
    src/Serializer.cpp
    src/Kfactor.cpp
    src/Deserializer.cpp
    src/DataSave.cpp
    src/DataLoad.cpp
    src/BendDeduction.cpp
    src/FormingTool.cpp
)

# Create executable
add_executable(bendcalc ${SOURCES})

# Include directories
target_include_directories(bendcalc PUBLIC include)

and the main.cpp entrypoint file is 

#include <algorithm>
#include <array>
#include <cassert>
#include <cctype>
#include <cstddef>
#include <chrono>
#include <cmath>
#include <condition_variable>
#include <cstdlib>
#include <cstring>
#include <ctime>
#include <fstream>
#include <functional>
#include <iomanip>
#include <iostream>
#include <iterator>
#include <memory>
#include <mutex>
#include <random>
#include <regex>
#include <sstream>
#include <string>
#include <thread>
#include <vector>

#include "../include/BendAllowance.h"
#include "../include/BendDeduction.h"
#include "../include/DataLoad.h"
#include "../include/DataSave.h"
#include "../include/Deserializer.h"
#include "../include/FormingTool.h"
#include "../include/Kfactor.h"
#include "../include/Serializer.h"
#include "../include/Setback.h"
#include "../include/Tonnage.h"

int main() {

	DataLoad::loadDataFromCSV(/*fileName*/);

    std::cout << "Welcome to BendCalc - Metal Forming and Bending Operations Calculator\n";
    std::cout << "Select an operation:\n";
    std::cout << "1. Calculate Bend Deduction\n";
    std::cout << "2. Load Data\n";
    std::cout << "3. Save Data\n";
    std::cout << "4. Exit\n";
    std::cout << "Enter your choice: ";

    int choice;
    std::cin >> choice;

    switch (choice) {
        case 1:
            // **Calculate Bend Deduction**
            // Get user input for bend parameters
            double bendAngleDegrees;
            double insideRadius;
            double materialThickness;
            double kFactor;

            std::cout << "Enter bend angle (degrees): ";
            std::cin >> bendAngleDegrees;

            std::cout << "Enter inside bend radius (mm): ";
            std::cin >> insideRadius;

            std::cout << "Enter material thickness (mm): ";
            std::cin >> materialThickness;

            std::cout << "Enter K-factor: ";
            std::cin >> kFactor;

            // Create a BendDeduction object with user-provided values
            BendDeduction bendCalculator(bendAngleDegrees, insideRadius, materialThickness, kFactor);

            // Call the object's method to calculate bend deduction
            double bendDeduction = bendCalculator.calculateBendDeduction();

            // Display the result
            std::cout << "Bend Deduction: " << bendDeduction << " mm\n";
            break;
        case 2:
            // Call function to load data (implementation pending) // Load Data
			std::string fileName;
			std::cout << "Enter the CSV file name to load: ";
			std::cin >> fileName;

			DataLoad::loadDataFromCSV(fileName);  // Call the static method

			std::cout << "Data loaded (assuming successful parsing).\n";
			std::cout << "Data is already loaded.\n";
			break;
        case 3:
            // Save Data
			std::string fileName;
			std::string dataToSave;

			std::cout << "Enter the CSV file name to save: ";
			std::cin >> fileName;

			std::cout << "Enter the data to save: ";
			std::cin >> dataToSave;

			DataSave::saveDataToCSV(fileName, dataToSave);

			std::cout << "Data saved successfully.\n";
    		break;
        case 4:
            std::cout << "Exiting...\n";
            return 0;
        default:
            std::cout << "Invalid choice. Please try again.\n";
    }

    return 0;
}