'I can't figure out why hash[0] is being assigned the value 1 in the output . Any help would be appreciated

This is my code:-

#include<iostream>
#include<string>
using namespace std;

int main()
{
    string magazine="aab";
    string ransomNote="aa";
    int hash[123]={};
        int i;
        for(i=0;i<=magazine.length();i++)
        {
            hash[magazine[i]]++;
        }
        for(i=0;i<123;i++)
        {
            cout<<hash[i]<<" ";
        }
        cout<<endl;
}

The output is:-

1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

c++arrays


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