Added more c++ fun

sheets/_c++/arrays

@@ -0,0 +1,6 @@
+// In C++11 you can do the following, but most people use vector instead of arrays 
+a.size();           // Returns the size of array a
+
+int a[10];          // Declare an int array with length 10. 
+a[0] = 420;         // Set the value 420 to index 0 of array a
+int b = a[0]        // Set variable b to 420 by accessing index 0 of array a.

sheets/_c++/class

@@ -0,0 +1,44 @@
+// classes are like structs, but everything is by default private. 
+
+// Declaration 
+ObjectName className { 
+    // Sets everything below it to be private. 
+    private:
+        // Declaration of variables 
+        int a; 
+        string b;
+    
+        // Implement any private / helper functions below
+
+    // Sets everything below it to be public.
+    public:
+        // Constructor
+        structName(new_a, new_b) { 
+            a = new_a; 
+            b = new_b; 
+        }
+
+        // accessors or getters functions 
+        int getA() { 
+            return a; 
+        }
+
+        string getB() { 
+            return b; 
+        }
+
+        // mutators or setter functions 
+        void setA(int new_a) {
+            a = new_a;
+        }
+
+        void setB(int new_b) { 
+            b = new_b; 
+        }
+
+        // Implement any public functions below
+};
+
+// Accessing PUBLIC variables 
+ObjectName v = structName(5, "Hello");              // Creates a struct via the constructor 
+std::cout << v.a << " " << v.b << std::endl;        // Prints to console "5 Hello"

sheets/_c++/if

@@ -0,0 +1,20 @@
+int main() { 
+    // Basic 
+    if(x > 0) {
+        return x; 
+    }
+    else { 
+        return -x; 
+    }
+
+    // if else 
+    if(x > 0) { 
+        return x; 
+    }
+    else if(x == 0) { 
+        return 420; 
+    }
+    else { 
+        return -x;
+    }
+}

sheets/_c++/struct

@@ -19,5 +19,3 @@ ObjectName structName {
 // Accessing PUBLIC variables 
 ObjectName v = structName(5, "Hello");              // Creates a struct via the constructor 
 std::cout << v.a << " " << v.b << std::endl;        // Prints to console "5 Hello"
-
-

sheets/_c++/types

@@ -0,0 +1,21 @@
+// ## Built-in Types 
+bool 
+
+char 
+
+string 
+
+// Assume signed, prepend unsigned to make it unsigned
+short 
+
+int 
+
+long 
+
+// C++ 11 
+long long 
+
+// Floating Points 
+float 
+double 
+long double 

sheets/_c++/vector

@@ -0,0 +1,10 @@
+// Vectors are sequence containers representing arrays that can change in size.
+
+// Library to include 
+#include <vector> 
+
+vector<int> a;                                  // Declare an empty vector, a.
+a.push_back(1);                                 // Appends/Adds an element whose value is 1 to vector a. 
+std::cout << a.at(0) << std::endl;              // Accessing index 0 of vector a. 
+a.size();                                       // Returns the size of the vector
+a.at(0) = 420;                                  // Changing the value at index 0 to 420. 

sheets/c++

@@ -0,0 +1,15 @@
+# C++
+# 
+# C++ is an object-oriented programming language which provides facilities for low-level memory manipulation.
+# It is widely used by big tech companies, such as, Amazon, Facebook, Google, and SpaceX
+#
+# To Compile: g++ my_script.cpp
+# To Execute: ./a.out
+#
+# See also 
+#   C++ language cheat sheet at /c++/
+#   list of pages:      /c++/:list
+#   learn C++:          /c++/:learn
+#   C++ one-liners:     /c++/:1line
+#   C++ weirdness:      /c++/weirdness 
+#   search in pages:    /c++/~keyword