Answer:
Here's an example C++ code that will take an employee's name and salary as input, and output the information requested:
```
#include <iostream>
#include <string>
using namespace std;
int main() {
string name;
double salary;
double monthly_income, monthly_tax, monthly_net_income;
double annual_income, annual_tax, annual_net_income;
const double TAX_RATE = 0.10;
// Get employee name and salary
cout << "Please enter employee name: ";
getline(cin, name);
cout << "Employee salary: ";
cin >> salary;
// Calculate monthly income, tax, and net income
monthly_income = salary / 12.0;
monthly_tax = monthly_income * TAX_RATE;
monthly_net_income = monthly_income - monthly_tax;
// Output welcome message
cout << "Welcome, " << name << "!" << endl;
// Output total monthly income
cout << "Your total monthly income is: $" << monthly_income << endl;
// Output total monthly tax
cout << "Your total monthly tax is: $" << monthly_tax << endl;
// Output monthly net income
cout << "Your monthly net income is: $" << monthly_net_income << endl;
// Calculate annual income, tax, and net income
annual_income = salary;
annual_tax = annual_income * TAX_RATE;
annual_net_income = annual_income - annual_tax;
// Output total annual income
cout << "Your total annual income is: $" << annual_income << endl;
// Output total annual tax
cout << "Your total annual tax is: $" << annual_tax << endl;
// Output annual net income
cout << "Your annual net income is: $" << annual_net_income << endl;
return 0;
}
```
When you run this code, it will ask the user to enter the employee's name and salary, and then output the requested information. The tax rate is set as a constant variable, and all calculations are based on that rate.