Who will help? C++

Question

To calculate the sum: 1-2/3x+3/4x^(2)-4/5x^(3)+...+11/12x^(10) x = 2

Answer 1

x=2
eq="1"
for i in range(1,11):
eq+="-"+str(i+1)+"/"+str(i+2)+"x**"+str(i)
print(eval(eq))
#A Python solution
#I dunno if it works, but I think so

Answer 2

C++ please