series = 1 + 1/3 + 1/5 + 1/7 + 1/9 .... 1/n

a sample run of the program :

n=0

n=-5

n=10

series = 1 + 1/3 + 1/5 + 1/7 + 1/9

example : please enter a positive number > 0 :

0

invalid input !

please enter a positive number > 0 :

-5

invalid input !

please enter a positive number > 0 :

10

sum = 1.7873

required :

N=3 series = 1 + 1/3 + 1/5

please enter a positive number > 0 :

5 sum = 1.53333