The first class

Author: Ohjurot

07_SimpleCppApp/main.cpp

@@ -6,6 +6,60 @@ int32_t f(int32_t x)
     return x * x + 5 * x + 5;
 }
 
+class FunctionPreCacher
+{
+    public:
+        void Setup(int32_t x, uint32_t count, int32_t(*function)(int32_t))
+        {
+            if (!values)
+            {
+                this->x = x;
+                this->count = count;
+                this->function = function;
+            }
+        }
+
+        void Compute()
+        {
+            if (function && count > 0)
+            {
+                Release();
+                values = new int32_t[count];
+                if (values)
+                {
+                    for (uint32_t i = 1; i <= count; i++)
+                    {
+                        values[i - 1] = function(i * x);
+                    }
+                }
+            }
+        }
+
+        void Release()
+        {
+            if (values)
+            {
+                delete[] values;
+                values = nullptr;
+            }
+        }
+
+        void Print()
+        {
+            if (values)
+            {
+                for (uint32_t i = 1; i <= count; i++)
+                    std::cout << "f(" << i * x << ") = " << values[i - 1] << std::endl;
+            }
+        }   
+
+    private:
+        int32_t* values = nullptr;
+        int32_t x = 0;
+        uint32_t count = 0;
+        int32_t(*function)(int32_t x) = nullptr;
+};
+
 int main()
 {
     int32_t x;
@@ -15,7 +69,9 @@ int main()
     std::cout << "Enter the itterations: ";
     std::cin >> count;
 
-    std::cout << "Starting at: " << x << " Number of itterations: " << count << std::endl;
-    for (uint32_t i = 1; i <= count; i++)
-        std::cout << "f(" << i * x << ") = " << f(i * x) << std::endl;
+    FunctionPreCacher pc;
+    pc.Setup(x, count, &f);
+    pc.Compute();
+    pc.Print();
+    pc.Release();
 }