cout an array and its displaying "-48"

[Scuffz]

I'm trying to obtain a large integer (20 characters long) get it from a string then put it into an int array and do the math from there, I'm trying to display the array and I'm getting this http://i.imgur.com/CI3OTL3.jpg heres my code


#include "stdafx.h"
#include <iostream>
#include <string>
#include <iomanip>
#include <cmath>

using namespace std;


int main()
{
string input1;
string operation;
string input2;
int array1[20];
int array2[20];
cout << "Enter an expression: ";
cin >> input1 >> operation >> input2;

if (input1.length() > 20)
cout << "Invalid Operand (too large). " << endl;
if (input2.length() > 20)
cout << "Invalid Operand (too large). " << endl;


//use array of char
// use subcript and size to keep track of quantity
for (int i = 0; i <= input1.size(); i++)
{
array1[i] = input1[i] - '0';

}


//testing array
for (int i = 0; i <= input1.size(); i++)
{
cout << array1[i];
}

int temp;
//make array stored backwards
for (int i = 0, j = input1.size() - 1; i< input1.size() / 2; i++, j--)
{
temp = array1[i];
array1[i] = array1[j];
array1[j] = temp;
}

cout << "\n backwards:";

for (int i = 0; i <= input1.size(); i++)
{
cout << array1[i];
}

[Steve727]

Don't use <= in your for loops. Remember, array sequences being with 0 and not 1. So if something is 10 in length, it goes from 0 to 9.

[Scuffz]

thanks!