#include <iostream>

using namespace std;

// Element size of array.
const int GRADE_SIZE=100;

int main() {

    // Delcare the array.
    int grades[GRADE_SIZE];

    // Value the user enters in for the grade.
    int temp;

    // How many grades were entered.
    int grades_entered=0;

    // Initalize array
    for(int i=0;i<GRADE_SIZE;i++)
        grades[i]=0;

    // Enter in grades.
    cout << "Please enter in the grades. ";
    cout <<"Enter in a -1 to indicate end of input" << endl;

    // For each element in the array attempt to fill it, unless
    // the user enters in a -1 indicating end of input.
    // i is the element of the array to be processed.
    for(int i=0;i<GRADE_SIZE;i++) {
        cout << "Enter in grade " << i+1 << ": ";
        cin >> temp;

        // User is done entering grades.
        if(temp==-1)
            break;

        // The user is storing a grade.
        grades[i]=temp;
        grades_entered++;
    }

  // Display the grades.
  cout << endl << "Grades entered:" << endl;

  for(int i=0;i<grades_entered;i++) {
        cout << grades[i] << endl;
  }
    return 0;

}