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public class Potenzen{
          public static float funktion(int b, int x){
                float p=1;
                float temp=1/b;
                x=x*(-1);
                for(i=1;i<=x;i++){
                        p=p*temp;
                }
            return p;
           }
         public static void main(String args[]){
                 system.out.println(funktion(2,-2));
         }
}

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#include<iostream>
using namespace std;

    float potenz(int,int);
   
    float potenz(int b,int x){
        float p=1;
        float t=1/b;
        x=x*(-1);
        for(int i=1;i<=x;i++){
                p=p*t;
                }
        return p;
        }
   int main(){  
       cout<<potenz(2,-2);
       return 0;
       }