Answer:
The following edits will be made to the source code
const int YEAR = 2050;
cout << "I will be " << myNewAge << " in "<<YEAR<<"." << endl;
Explanation:
First, YEAR has to be declared as an integer constant. This is shown as follows;
const int YEAR = 2050;
This will enable us make reference to YEAR in the program
Next,
Replace the following:
cout << "I will be " << myNewAge << " in 2050." << endl;
with
cout << "I will be " << myNewAge << " in "<<YEAR<<"." << endl;
I've added the edited source file as an attachment;