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Exponitial Loop

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Join Date: Mar 2007

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tayster

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Exponitial Loop

Mar 23rd, 2007

this is about making a loop for powers

stripe3 is the variable
how do u do stripe3*10 stripe3 times
for example if stripe3 = 5
then my question is how do u do 5*10 5 times
because there isnt an opperation in c++ for exponents
so i was thinking of making a loop but i can't figure out
how to write a loop for this ?

also sence before hand i am going to have a user input a value for a couple things including stripe3 and then the loop will calculate then out put the answer any ways im wondering if i should use cin and cout or printf and scanf for the user input stuff also i cant seem to figure out how to combine a user input with cin and cout with loops and if else statements and the data after compiled comes out wrong.

could you guys help me out with this i'd apreaciate it thanks.

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Join Date: Aug 2005

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iamthwee

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Re: Exponitial Loop

Mar 23rd, 2007

>because there isnt an opperation in c++ for exponents

There isn't? I think there is.

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tayster

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Re: Exponitial Loop

Mar 23rd, 2007

o i just looked at something and what it said under math.h was
exe ()
could this be it and if it is i dont have a clue how to use it

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iamthwee

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Re: Exponitial Loop

Mar 23rd, 2007

no that's not it.

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tayster

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Re: Exponitial Loop

Mar 23rd, 2007

well i have looked in alot of places and i cant find one if u know it could u tell me?

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Aia

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Re: Exponitial Loop

Mar 23rd, 2007

#include <math.h>

pow(base, exponent);

Last edited by Aia; Mar 23rd, 2007 at 6:48 pm.

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tayster

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Re: Exponitial Loop

Mar 23rd, 2007

ok i created a program for it but now how do i output the result?

 Help with Code Tags 
 C++ Syntax (Toggle Plain Text) 
#include <iostream>
#include <math.h>
 
using namespace std;
int main()
{
float a,b,c;
a=0;
b=0;
cout<<"enter first stripe number"<<endl;
cin>>a;
cout<<"enter second stripe number"<<endl;
cin>>b;
pow(a,b);
 
 
system ("pause");
  }
#include <iostream>
#include <math.h>

using namespace std;
int main()
{
float a,b,c;
a=0;
b=0;
cout<<"enter first stripe number"<<endl;
cin>>a;
cout<<"enter second stripe number"<<endl;
cin>>b;
pow(a,b);
 

system ("pause");
  }

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Aia

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Re: Exponitial Loop

Mar 23rd, 2007

a_variable_float = pow(a,b);

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tayster

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Re: Exponitial Loop

Mar 23rd, 2007

so like this?

 Help with Code Tags 
 C++ Syntax (Toggle Plain Text) 
 #include <iostream>
#include <math.h>
 
using namespace std;
int main()
{
float a,b,c;
a=0;
b=0;
cout<<"enter first stripe number"<<endl;
cin>>a;
cout<<"enter second stripe number"<<endl;
cin>>b;
a_variable_float = pow(a,b); 
 
system ("pause");
  }
 #include <iostream>
#include <math.h>

using namespace std;
int main()
{
float a,b,c;
a=0;
b=0;
cout<<"enter first stripe number"<<endl;
cin>>a;
cout<<"enter second stripe number"<<endl;
cin>>b;
a_variable_float = pow(a,b); 

system ("pause");
  }

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Aia

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Re: Exponitial Loop

#10

Mar 23rd, 2007

•

Originally Posted by tayster

so like this?

What I meant was:

Declare another float or better yet a double variable at the begining of
main. Then assign the result of the pow function to that variable.

Then do what you wish with that result that is in the variable.