D:\cs2>recurs
Enter a number: 1
*
1
Factorial = 1
Triangular Number = 1
Quadratic Number = 1
Sum of squares = 1

D:\cs2>recurs
Enter a number: 5
*****
54321
Factorial = 120
Triangular Number = 15
Quadratic Number = 25
Sum of squares = 55

D:\cs2>