习题2.11

#include<iostream>using namespace std;int main(){double base,result=1.0;int exponent;cin>>base>>exponent;if(exponent<0){base=1.0/base;    for(int i=1;i<=-exponent;i++)    result*=base;}    else if(exponent>0){    for(int i=1;i<=exponent;i++)    result*=base;}elseresult=1;cout<<result<<endl;return 0;}