Hi all i have an assignment to take enter 5 grades then average them, then enter 2 whole numbers and divide them to output one whole number with it's remainder.I'm stuck at the moment because it runs the 1st half of the program then the program ends never even starting the 2nd half of it here is what I have so far.

Code:

#include <iostream>
#include <string>
#include <int>
using namespace std;
int main()
{
//declaring variables
string name;
double grade_1,grade_2,grade_3,grade_4,grade_5;
double avg;
//get input from user
cout << "Please enter your name:" ";
cin >> name;
cout << endl;
cout << "Enter first grade:" ";
cin >> grade_1 ;
if(grade_1<0)
grade_1=0;
cout << endl;
cout << "Enter second grade:" ";
cin >> grade_2 ;
if(grade_2<0)
grade_2=0;
cout << endl;
cout << "Enter third grade:" ";
cin >> grade_3 ;
if(grade_3<0)
grade_3=0;
cout << endl;
cout << "Enter forth grade:" ";
cin >> grade_4 ;
if(grade_4<0)
grade_4=0;
cout << endl;
cout << "Enter fifth grade:" ";
cin >> grade_5 ;
if(grade_5<0)
grade_5=0;
cout << endl;
// Finding the avrage
avg = (grade_1+grade_2+grade_3+grade_4+grade_5) /5 ;
cout << "Your average is: " << avg;
int 1stNumber;
double 2ndNumber;
cout << "enter 2 whole numbers: " << endl;
cin >> 1stNumber >> 2ndNumber;
cout <<1stNumber << " divided by " << 2ndNumber
<< " is " << (1stNumber / 2ndNumber) << endl
<< "with a remainder of " << (1stNumber % 2ndNumber)
cout << endl;
return 0;
}

Any help or comments would be appreciated.