Task the predetermined number N is the degree of the number a

Hi all,
I have a problem with solving this problem since the main idea is to solve it without any branches and loops. I can’t solve it. I will be very grateful for any help.
I will repeat the task again completely: The predetermined number N is the degree of the number a (the exponent may be in the range from 0 to 4).

I am sorry, but what you are asking is not completely clear to me. Can you provide a few real number examples of the values you have, how they should be used and what would the answer be for each of your examples?

This is C++ code, I need something similar only without cycles and for any numbers

int main()
{
int n,a;
bool r=true;
cout<<"Enter n"<< '\n';
cin>>n;
while(n!=1) //;
{
a=n%5;
if(a!=0)
{
r=false;
break;
}
n/=5;
}
if(r)
cout << "yes"<<'\n';
else
cout<<"no"<<'\n';
return 0;
}

I cannot read C++ code. I am guessing you want a macro. Fine. And it looks like you want the macro to ask you for a number (625 for example). Once you put 625 into the macro, what do you want the macro to do? You have to tell us what you expect the macro to do next as we have no idea what your expectations are. Will it ask for base number (5 from your example)... your code does not appear to do that, rather it looks like the 5 is hard-coded in... and return the power for it (5 raised to the 4th power is 625)? Or do you want the macro to tell you if it is a perfect power (that is, there is a whole number that 5 can be raised to in order to get 625 as a value)? To repeat, we do not know what values you want to test, how the macro is to get them or exactly what answer you are expecting the macro to give you... you have to explain these things in detail to us... we will probably not be able to guess what is in your mind for them.

So lets forgot about c++ code, its was not perfect example of this task... Sooo I expect that's I enter any number "N" and "a" Example: N=16 a=2 Result: True, Next Example: N=10 a=3 Result: false, I expect this, but I have problem with coding this task, because on assignment I can’t use "while" "for" and etc. I can write the code using "while" "for" but without them I have problems, so I ask for help with the code

It sounds like this is a homework assignment so I am not sure if the code I wrote would be acceptable, but this will do what you want...

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Hi,

or just MsgBox (Num Mod Base = 0) …

@Marc L,

I don't think that code line is sufficiently robust. If I understand the OP's question correctly (and there is no guarantee I have), I think he wants to know if the base can be raised to a whole number power such that it equals the number. Your test would report True if Num equals 10 and Base equals 2 but 2 cannot be raised to any whole number power to equal 10.

Rick, yes I knew as my codeline returns exactly the same result as your If … End If block !
You can check yourself if you answer 10 & 2 to your input boxes !
So now you know your code is wrong; a good way is to check if the Power result is not decimal …

Checking via a function :

PHP Code: 

Function IsFixPower(N&, B&) As Boolean
         P# = Log(N) / Log(B)
         IsFixPower = P = Fix(P)
End Function 


Do you like it ? So thanks to click on bottom left star icon « ★ Add Reputation » !

I like your Like for the Power, as the great Albert may have said : that's the power of like !

Originally Posted by Marc L

I like your Like for the Power...

Using it in your function to produce a one-liner...

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Sorry but I forgot to notice it can not work on my side 'cause of the decimal separator not a point but a comma,
the reason why I prefer my original function which works whatever the decimal separator is …

Does this work...

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I think it should, but if not, what about this...

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Or, more than likely, this...

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Thanks to everyone for helping, I think the problem is solved

Thanks for the rep' !

Originally Posted by Rick Rothstein

Does this work...

I thought for #2 & 3 but not for the first - my favorite - as I should, it was late on my side … All work.