//       Filename:      hw6.cpp
//       Author:        Michael Collins
//       Instructor:    Dr. Wang
//       Compilation:   g++ hw6.cpp -o hw6.out
//       Execution:     ./hw6.out
//       Goal: Calculates grades and drops lowest grade. 

# include <iostream>

using namespace std;

void Grade(int[], bool&);

void Average(int[], int);

int Lowest(int[], int);

int main()
{
	int grade[4];
	int total=0;
	bool fail;
	Grade(grade,fail);
	if (fail == true)
	return 1;
	Average(grade,total);
	return 0;
}
	
void Grade(int grade[], bool& fail)
{
	cout << "Enter five scores" << endl;
	for(int g=0; g<=4; g++)
	{
		cin >> grade[g];
		if(grade[g] <0 || grade[g] >100)
		{
			cout << "Grade is incorrect." << endl;
			fail = true;
		}
	}
}

void Average(int grade[], int total)
{
	cout << "Average score after lowest grade dropped: " << endl;
	cout << Lowest (grade, total) << endl;
}

int Lowest(int grade[], int total)
{
	 
    	for (int i= 0; i<=4; i++)        
	{
      		int a, save = grade[i];
         	for ( a = i; a >= 1 && grade[a - 1] > save; a-- )
       	 		grade[a] = grade[a - 1]; 
     		grade[a] = save;
   	}
	for(int g=1; g<=4; g++)           
        total += grade[g]; 
        total = total/4;
	return total;
}