x的y次幂的递归函数.c

#include<stdio.h>

double getpower(int x, int y);

int main()

{ int x,y;

double result;

while(scanf("%d,%d",&x,&y)!=EOF){

if(x==0) break;

else{

result=getpower(x,y);

printf("%lf\n",result);}

}

return 0;

}

double getpower(int x, int y)

{ int i;

double result=1;

for(i=1;i<=y;i++){

if(y==0)

result=result*1.0;

else if(y>0)

result=result*x;

else;}

if(y<0){

y=-y;

for(i=1;i<=y;i++)

result=result*1.0/x;

}

return result;

}