This is an alternate pow func problem

[Helegurbann]

#include <iostream>
#include <stdlib.h>
#include <stdio.h>
using namespace std;
int us(int a,int b){
int d,e,*f;
for(int c=0;c<b;c++){
if(b==2)
d=a*a;
if(b==0){
goto git;
}

if(b==1)
d=a;
if((b>2))
{
    d=a*a;
e=d;
d=e*a;
}

return d;
git:
   printf("%i",(b+1));
  
}


}

int main(){int g,h;
cin>>g;
cin>>h;
cout<<us(g,h)<<endl;
system("PAUSE");
return 0;}

This is run.But my problem is at 3^0 2^0
I can not calc a^0 by PC.