Update.

Loops/for.cpp

@@ -0,0 +1,32 @@
+#include <iostream>
+
+#ifdef _WIN32 // if os is windows
+#include "Windows.h" // include Windows.h for sleep method
+#endif // end the if
+
+#ifdef linux // if os is linux
+#include "unistd.h" // include unistd.h for sleep method
+#endif // end the if
+
+#define sleep_time 100 // define macro to sleep for 500 milliseconds (1/2 a second)
+
+using namespace std;
+
+/*
+    For loops. Iteration over a certain amount of times / elements.
+    They are used for a lot of shit, can be used for bad stuff too.
+*/
+
+void for_loop(int max) {
+    for (int x = 1; x <= max; x++) { // defining new int called x. stop when x is less than or equal to int max. increment x by 1
+        cout << x << " "; // print out each number with a space "1 2 3 etc"
+        Sleep(sleep_time); // making use of a define variable at line 11
+    }
+    cout << "\n"; // new line if you don't want the next lines of code on same line 
+}
+
+int main() {
+    for_loop(10); // calling the for loop and setting the max to be 10 in this example
+    for_loop(100); // calling the for loop and setting the max to now being 100!
+    return 0;
+}

Loops/while.cpp

@@ -0,0 +1,22 @@
+#include <iostream>
+
+using namespace std;
+
+/*
+    While loops. Can also be known as a forever loop.
+    Breaks only when a condition is met; usually a boolean.
+*/
+
+void while_loop(int max) {
+    int y = 0;
+    while (y < max) {
+        cout << y << " ";
+        y++;
+    }
+}
+
+int main() {
+    while_loop(10);
+
+    return 0;
+}

README.md

@@ -9,9 +9,16 @@ This is just how I have files and the [Makefile](makefile_tutorial.md) because I
 - Variables
   - [Variables](Variables/variables.cpp)
   - [Macros](Variables/macros.cpp)
+  - [Macros2](Variables/macros2.cpp)
   - [Pointers](Variables/pointers.cpp)
   - [Shared Pointers](Variables/shared_pointers.cpp)
   - [Smart Pointers](Variables/smart_pointers.cpp)
+  - [Vectors](Variables/vectors.cpp)
+  - [Arrays](Variables/arrays.cpp)
+- Loops
+  - [For](Loops/for.cpp)
+  - [While](Loops/while.cpp)
+  - [Do While](Loops/do_while.cpp)
 - Functions
   - [Functions](Functions/functions.cpp)
   - [Templates](Functions/templates.cpp)