Closing Console Without Error

[Dreamscape]

hi i'm very very beginner so i have to write a program with arrays.program works just fine but when it's time to close console it says that "Run-Time Check Failure #2 - Stack around the variable 'a' was corrupted." so here is my code:

#include <iostream>
#include <conio.h>
#include <windows.h>
using namespace std;
int main()
{
int i, a[10], positive=0, product=1, sum=0, negative=0, ipositive=1, inegative=1, all;
char k,y,n,prog;
for(i=1; i<=10; i++){
cout << "A["<<i<<"]= ";
cin >> a[i];
sum+=a[i];
product*=a[i];
if(a[i]>0){
ipositive*=a[i];
positive++;
}
else if (a[i]<0){
negative++;
inegative*=a[i];}}
cout << "\nPositive Detected:\a " << positive << endl;
cout << "\nNegative Detected:\a " << negative << endl;
cout << "\nPositive Product:\a " << ipositive << endl;
cout << "\nNegative Product:\a " << inegative << endl;
cout << "\nSum:\a " << sum << endl;
cout << "\nProduct:\a " << product << endl;
cout << "\nDo You Want To Add All Results? Y/N: ";
cin >> k;
prog: all=positive+product+sum+negative+ipositive+inegative;
if (k=='y')cout << "\nAddition Of All:\a " << all;
else if (k=='n'){ cout << "\nIt's Your Choice, Goodbye";
getch();
return 0;}
else {system("pause");
return 0;}
cout << "\n\nPress Any Key To Exit...";
getch();
return 0;
}

[ne555]

Array index goes from 0 to n-1

[Dreamscape]

hey thanks mate i got it thank you ;)