Recursive Call Example Sum

 clang++ 

Enter n: 

         Entering into recursiveAdd:  n = 7
            Entering into recursiveAdd:  n = 6
               Entering into recursiveAdd:  n = 5
                  Entering into recursiveAdd:  n = 4
                     Entering into recursiveAdd:  n = 3
                        Entering into recursiveAdd:  n = 2
                           Entering into recursiveAdd:  n = 1
                           Returning from recursiveAdd: n = 1 -- Ans = 1
                        Returning from recursiveAdd: n = 2 -- Ans = 3
                     Returning from recursiveAdd: n = 3 -- Ans = 6
                  Returning from recursiveAdd: n = 4 -- Ans = 10
               Returning from recursiveAdd: n = 5 -- Ans = 15
            Returning from recursiveAdd: n = 6 -- Ans = 21
         Returning from recursiveAdd: n = 7 -- Ans = 28

Triangle sum of 7 = 28