#include <iostream>

using namespace std;

// define a new data type
struct StudentRec
{	string name;
	int scores[3];
	float avg;
	char grade;
};

int main()
{
	// 1. declare obj. or variables
	StudentRec x, y, z;
	// 2. input
	x.name = "John Wang";
	x.scores[0] = 77;
	x.scores[1] = 90;
	x.scores[2] = 99;
	// 3. computing
	x.avg = (x.scores[0]+x.scores[1]+x.scores[2])/3.0;
	if(x.avg > 90)
		x.grade = 'A';
	else if( x.avg > 80)
		x.grade = 'B';
	else
		x.grade = 'P';
	y = x;			// aggregate operation: assignment
	cout << "Input name: ";
	getline(cin, y.name);
	// 4. out
	cout << "The name: " << y.name << ", scores: " 
		<< y.scores[0] << ", " << y.scores[1] << ", "
		<< y.scores[2] << endl;
	cout << "The average: " << y.avg << endl;
	cout << "The grade: " << y.grade << endl;

	cout << "\n\n-----------------\nDone.\n";
	return 0;
}