sentinel.cpp

// Syeda Umm E Abiha Rizvi
// SE-21014

#include <iostream>
using namespace std;

int main()
{
    int month = 1;
    float total = 0, rain;
    cout << "Enter the total rainfall in inches for month " << month << endl;
    cout << "Enter -1 when you are finished" << endl;
    cin >> rain;

    while (rain != -1)
    {
        total += rain;
        month = ++month;
        cout << "Enter the total rainfall in inches for month " << month << endl;
        cout << "Enter -1 when you are finished" << endl;
        cin >> rain ;
    }
    if (month == 1)
        cout << "No data has been entered" << endl;
    else
        cout << "The total rainfall for the " << month - 1 << " months is " << total << " inches."<< endl;

    return 0;
}