#1




Recursive power(x,n) functionhi every one
i'm new to C++ i get a assignment that i need to wirte a recursive function for exponential i wrote a silpme one, and it works, then the teacher ask me to modify it she wrote this: "The "simple" algorithm does n1 multiplications but it is possible to compute x^n for n=16 in 4 multiplications. Modify your program to output also the value of counter. For x=2.0 and n=16, the output would be x=2 n=16 x^n=65536 multiplications=4 Hint: One way to calculate x8 is to calculate x · x · x · x · x · x · x · x which takes 7 multiplications. But x · x · x · x · x · x · x · x = (x · x · x · x)^2 = ((x · x)^2)^2 which can be computed with 3 multiplications." but i try a so many time, still dont get it. i need some help for this. here is my code The "simple" algorithm she said.. CPP / C++ / C Code:


#2




Re: recursive power(x,n) functioni can't edit my post, so i reply my new update
i can now do the 2^8 in 3 muliti. but still can't do 2^16 in 4 muliti.. here is the new code CPP / C++ / C Code:

#3




Re: Recursive power(x,n) functionHere's a hint (I'm not going to give away the answer since it's a school assignment).
(Notation: By x^y, I mean x to the y power, not the bitwise XOR operator). CPP / C++ / C Code:
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