C :: Recursive Functions With Arrays As Parameters

I wrote a fuction in C with the prototype 'void raisePowerOf2(int array[],int pow);'

If someone want to find the value of 2^456 ,just have to invoke this function 456 as the value for pow and int array with 2 elements :1 & -1 as the argument for the array.(There I used -1 to denote the end of the array.)

But it seems that this function doesn't give the exact answer

And I tried this from java also,with the same implementation.It produced the answer precisely .

I tried for hours, but unable to detect reasons why this code blok in C doesn't work properly

This is the code in c

Code:

#include<stdio.h>
void raisePowerOf2(int array[],int pow);
int main(){
int a[2]={1,-1};
raisePowerOf2(a,5);
return 0; }
void raisePowerOf2(int array[],int pow){

[Code]...

This is the code in java....

Code:

public class NewClass4 {
void raisePowerOf2(int array[],int pow){
final int len=array.length;
int store[]=new int[len+1];
int qtnt=0;
for(int i=len-1;i>=0;i--){
store[i+1]=(array[i]*2)%10+qtnt;
qtnt=(array[i]*2)/10;

[Code]...