Accessing memory address and getting different results

Question

I'm accessing the same memory address with two separate instances of eclipse C++ and I'm getting different results. Why is this happening?

I am running two different instances of eclipse for C++ at the same time. The first instance (Testrun.cpp) is assigning a value to the memory, then printing the memory address then stopping because it is waiting for user input. I am taking the printed memory address and assigning it to a pointer in the second instance (Hello.cpp). The second instance is accessing the memory address and not printing the integer that was assigned by the Testrun.cpp instance.

Why is this happening? I will like to write software that will access memory of another application that is running.

// Testrun.cpp
#include <iostream>
using namespace std;

int Tito(int g);

int main()
{
    int l;
    int *e;
    int i = 11;
    //int *p = (int *)0x73fe44;
    e = &i;
    cout << &i << endl; // prints !!!Hello World!!!
    //cout << e << endl;
    //*e = 4;
    //int *p = (int *)0x28ff43;
    //*p = 99;
    //cout << i << endl;
    cout << "Hello" << endl;
    cin >> l;
    cout << *e << endl;
    return 0;
}

int Tito(int g)
{
    return g;
}



// Hello.cpp
#include <iostream>
using namespace std;

int main()
{
    //cout << "!!!Hello World!!!" << endl; // prints !!!Hello World!!!
    int i = 23;
    int *g;
    g = &i;
    *g = 232;
    int *p = (int *)0x73fe40;
    cout << *p << endl;
    return 0;
}