Add files to repo, update gitignore.

.gitignore

@@ -52,3 +52,18 @@ Module.symvers
 Mkfile.old
 dkms.conf
 
+.vscode/*
+!.vscode/settings.json
+!.vscode/tasks.json
+!.vscode/launch.json
+!.vscode/extensions.json
+!.vscode/*.code-snippets
+
+# Local History for Visual Studio Code
+.history/
+
+# Built Visual Studio Code Extensions
+*.vsix
+
+build/*
+!build/build.xml

.vscode/settings.json

@@ -0,0 +1,5 @@
+{
+    "files.associations": {
+        "math_functions.h": "c"
+    }
+}

CMakeLists.txt

@@ -0,0 +1,18 @@
+cmake_minimum_required(VERSION 3.5.0)
+project(Test_Project VERSION 0.1.0 LANGUAGES C)
+
+# Add more c files in here
+add_executable(Test_Project
+main.c
+hello.c
+math_functions.c
+struct_test.c
+)
+
+# https://discourse.cmake.org/t/how-to-properly-include-header-files/4762
+
+# Add header files in here, not sure if I did this right.
+target_include_directories(Test_Project
+PRIVATE "${CMAKE_CURRENT_SOURCE_DIR}"
+
+)

hello.c

@@ -0,0 +1,38 @@
+#include <stdio.h>
+// #include <stdint.h>
+#include <inttypes.h>
+#include "math_functions.h"
+
+// Project running in VSCode, this can be developed on Windows, Linux and Mac
+// https://stackoverflow.com/questions/73328916/how-to-set-cmake-build-configuration-in-vscode
+
+// Basic C program that I am playing around with
+// https://www.geeksforgeeks.org/c-hello-world-program/
+
+// https://www.w3schools.com/c/c_functions_parameters.php
+// https://www.w3schools.com/c/c_functions.php
+
+
+// This doesn't work like this for some reason
+int uint16_test(){
+    // No value assigned
+    uint16_t test = -2;
+
+    // Assign a value here
+    test = -2;
+
+    return test;
+    // printf(test);
+}
+
+// https://cplusplus.com/reference/cstdio/printf/
+void printf_example(){
+    printf ("Characters: %c %c \n", 'a', 65);
+    printf ("Decimals: %d %ld\n", 1977, 650000L);
+    printf ("Preceding with blanks: %10d \n", 1977);
+    printf ("Preceding with zeros: %010d \n", 1977);
+    printf ("Some different radices: %d %x %o %#x %#o \n", 100, 100, 100, 100, 100);
+    printf ("floats: %4.2f %+.0e %E \n", 3.1416, 3.1416, 3.1416);
+    printf ("Width trick: %*d \n", 5, 10);
+    printf ("%s \n", "A string");
+}

hello.h

@@ -0,0 +1 @@
+void printf_example();

main.c

@@ -0,0 +1,49 @@
+#include <stdio.h>
+// #include <stdint.h>
+#include <inttypes.h>
+
+// My code
+#include "math_functions.h"
+#include "hello.h"
+#include "struct_test.h"
+
+// Test
+// https://stackoverflow.com/questions/8666378/detect-windows-or-linux-in-c-c
+#ifdef _WIN32
+#include <Windows.h>
+#endif
+
+
+// TODO Move this into a different project.
+#ifdef _WIN32
+
+void guiTest(){
+    
+}
+
+#endif
+
+// TODO Look into making a gtk C program
+// https://www.geeksforgeeks.org/how-to-create-gui-in-c-programming-using-gtk-toolkit/
+
+int main() {
+    char welcomeMsg[] = "Welcome to KCNet";
+    // printf(welcomeMsg);
+
+    uint16_t test = -2;
+    // This doesn't work
+    // uint16_test();
+
+    //? 65534? Where is that number coming from
+    // https://stackoverflow.com/questions/29112878/how-do-i-printf-a-uint16-t
+    // printf("Number: %u", (unsigned int)test);
+
+    // https://stackoverflow.com/questions/12120426/how-do-i-print-uint32-t-and-uint16-t-variables-value
+    // printf("Number: %" PRIu32, test);
+
+    // mathFunctions();
+    print_struct();
+    
+    // printf_example();
+    return 0;
+}

math_functions.c

@@ -0,0 +1,51 @@
+#include <stdio.h>
+#include "math_functions.h"
+
+
+// I forgot how to do this in C.
+// https://www.geeksforgeeks.org/c-function-argument-return-values/
+
+// Well I built a basic calculator in C.
+int add(int num1, int num2){
+    int sum;
+    sum = num1 + num2;
+
+    return sum;
+}
+
+int subtract(int num1, int num2) {
+    int sum;
+    sum = num1 - num2;
+
+    return sum;
+}
+
+int divide(int num1, int num2) {
+    int sum;
+    sum = num1 / num2;
+
+    return sum;
+}
+
+int multiply(int num1, int num2) {
+    int sum;
+    sum = num1 * num2;
+
+    return sum;
+}
+
+// Uses functions I have defined in math_functions.h
+void mathFunctions(){
+    int a = 3, b = 2;
+
+    // int num1 = 100, num2 = 55;
+    int addSum = add(a, b);
+    int subtractSum = subtract(a, b);
+    int multiplySum = multiply(a, b);
+    int divideSum = divide(a, b);
+
+    printf("The sum of %d + %d = %d\n", a, b, addSum);
+    printf("The sum of %d - %d = %d\n", a, b, subtractSum);
+    printf("The sum of %d * %d = %d\n", a, b, multiplySum);
+    printf("The sum of %d / %d = %d\n", a, b, divideSum);
+}

math_functions.h

@@ -0,0 +1,18 @@
+// 10-29-2024 @ 2:25AM
+
+// https://www.learncpp.com/cpp-tutorial/header-guards/
+// #ifndef MATH_FUNCTIONS_H
+// #define MATH_FUNCTIONS_H
+// #endif
+
+// Oops I forgot to include this in the header like in C++.
+// It worked without it but gave errors, I didn't think that would work.
+// https://stackoverflow.com/questions/28170800/compiler-gives-warning-c4013-getche-undefined-assuming-extern-returning-in
+extern void mathFunctions();
+
+// Oops also I had the full definitions in here when the function should've been in the C file.
+// It's been a little while since I've messed with a C type language
+int add(int num1, int num2);
+int subtract(int num1, int num2);
+int divide(int num1, int num2);
+int multiply(int num1, int num2);

struct_test.c

@@ -0,0 +1,56 @@
+#include <stdio.h>
+#include <string.h>
+ 
+#include <stdlib.h> 
+
+#include "struct_test.h"
+
+// https://www.w3schools.com/c/c_structs.php
+
+
+void print_struct(){
+    struct TestStruct s1;
+
+    s1.name = "Kelson";
+    s1.age = 23;
+
+    // https://stackoverflow.com/questions/10162152/how-to-work-with-string-fields-in-a-c-struct
+    // TestStruct *u = malloc(sizeof(struct TestStruct));
+    //
+
+    // strcpy(s1.name, "Kelson");
+    // strcpy(s1.age, 23);
+
+    // Oh, I had to add strdup to this for it to print.
+    // 11-4-2024 @ 2:38PM
+    printf("Name: %s\n", strdup(s1.name));
+    printf("Age: %d\n", s1.age);    
+
+}
+
+
+#ifdef _TEST
+// Not sure how to use this.
+patient *create_patient(int number, char *name,
+char *addr, char*bd, char sex) {
+
+    // Allocate memory for the pointers themselves and other elements
+    // in the struct.
+    patient *p = malloc(sizeof(patient));
+
+    p->number = number;
+
+    // Must allocate memory for contents of pointers.  Here, strdup()
+    // creates a new copy of name.  Another option:
+    // p->name = malloc(strlen(name)+1);
+    // strcpy(p->name, name);
+
+    p->name = strdup(name);
+    p->address = strdup(addr);
+    p->birthdate = strdup(bd);
+    p->gender = sex;
+
+    return p;
+}
+
+#endif //_TEST

struct_test.h

@@ -0,0 +1,28 @@
+// Move structs in here for them to be usable in other files.
+
+// This might work for what I'm trying to do.
+// https://www.geeksforgeeks.org/how-to-initialize-char-array-in-struct-in-c/
+
+struct TestStruct {
+    char *name;
+    int age;
+};
+
+// Not sure how to use this
+#ifdef _TEST
+// https://stackoverflow.com/questions/10162152/how-to-work-with-string-fields-in-a-c-struct
+typedef struct {
+    int number;
+    char *name;
+    char *address;
+    char *birthdate;
+    char gender;
+} patient;
+
+patient *create_patient(int number, char *name,
+char *addr, char*bd, char sex);
+
+#endif //_TEST
+
+void print_struct();
+