Added factorial.cpp, fibonacci.cpp; Updated README.md (#138)

day13/C++/factorial.cpp

@@ -0,0 +1,22 @@
+/**
+ * @author: Rajdeep Roy Chowdhury<rrajdeeproychowdhury@gmail.com>
+ * @github: https://github.com/razdeep
+ * @date: 07/01/2019
+ */
+#include <bits/stdc++.h>
+using namespace std;
+
+long long factorial(long long n)
+{
+    if (n <= 1)
+        return 1;
+    return n*factorial(n-1);
+}
+int main()
+{
+    long long n;
+    cout<<"Enter a number ";
+    cin>>n;
+    cout<<"The factorial of "<<n<<" is "<<factorial(n)<<endl;
+    return 0;
+}

day13/C++/fibonacci.cpp

@@ -0,0 +1,30 @@
+/**
+ * @author: Rajdeep Roy Chowdhury<rrajdeeproychowdhury@gmail.com>
+ * @github: https://github.com/razdeep
+ * @date: 07/01/2019
+ */
+#include <bits/stdc++.h>
+using namespace std;
+
+long long fibonacci(long long n)
+{
+    if (n <= 2)
+        return 1;
+    return fibonacci(n-1)+fibonacci(n-2);
+}
+int main()
+{
+    long long n;
+    cout<<"Enter a number ";
+    cin>>n;
+    string pos;
+    if(n%10 == 1)
+        pos="-st";
+    else if(n%10 == 2)
+        pos="-nd";
+    else
+        pos="-th";
+
+    cout<<"The "<<n<<pos<<" number of the fibonacci series is "<<fibonacci(n)<<endl;
+    return 0;
+}

day13/README.md

@@ -86,6 +86,34 @@ public class Factorial {
 }
 ```
 
+## C++ Implementation
+
+#### [Solution](./C++/factorial.cpp)
+
+```cpp
+/**
+ * @author: Rajdeep Roy Chowdhury<rrajdeeproychowdhury@gmail.com>
+ * @github: https://github.com/razdeep
+ * @date: 07/01/2019
+ */
+#include <bits/stdc++.h>
+using namespace std;
+
+long long factorial(long long n)
+{
+    if (n <= 1)
+        return 1;
+    return n*factorial(n-1);
+}
+int main()
+{
+    long long n;
+    cout<<"Enter a number ";
+    cin>>n;
+    cout<<"The factorial of "<<n<<" is "<<factorial(n)<<endl;
+    return 0;
+}
+```
 ***
 
 ***
@@ -166,4 +194,40 @@ public class Fibonacci {
         }
     }
 }
+```
+## C++ Implementation
+
+#### [Solution](./C++/fibonacci.cpp)
+
+```cpp
+/**
+ * @author: Rajdeep Roy Chowdhury<rrajdeeproychowdhury@gmail.com>
+ * @github: https://github.com/razdeep
+ * @date: 07/01/2019
+ */
+#include <bits/stdc++.h>
+using namespace std;
+
+long long fibonacci(long long n)
+{
+    if (n <= 2)
+        return 1;
+    return fibonacci(n-1)+fibonacci(n-2);
+}
+int main()
+{
+    long long n;
+    cout<<"Enter a number ";
+    cin>>n;
+    string pos;
+    if(n%10 == 1)
+        pos="-st";
+    else if(n%10 == 2)
+        pos="-nd";
+    else
+        pos="-th";
+
+    cout<<"The "<<n<<pos<<" number of the fibonacci series is "<<fibonacci(n)<<endl;
+    return 0;
+}
 ```