数值的整数次方

#include <iostream>#include <math.h>using namespace std;bool equalzero(double a,double b){    if((a-b<0.0000001)&&(a-b>-0.0000001))        return true;    else        return  false;}double powerwithtwo(double base,int exp){    double result = 1.0;    for(int i=0;i<exp;i++)        result *= base;    return result;}double power(double base,int exp){    if(equalzero(base,0.0))        return 0;    if(exp>0)    {        return powerwithtwo(base,exp);    }    if(exp==0)        return 1;    if(exp<0)    {        double result = powerwithtwo(base,-exp);        return 1.0/result;    }}int main(){    cout<<power(0,0)<<endl;    cout<<pow(0,0)<<endl;    return 0;}

零的零次方无意义，得零也行 得一也行