... 4. In order to compute a power of two, you can take the next lower power and double it. For example, if you want to compute2" and you know that 201024, then 31 2 x 1024 2048. Based on this observation, write a recursive function int pow2 (int n) where n is the exponent. If the exponent is negative, return-1 power two.cpp 1 int pow2(int n) CodeCheck Reset