having hard time with a few functions

[damianbloch49]

part A

void student_data()
{

}

part B

void findHighestScores(int)
{


}

I need some help trying to write a function for part a and b:
Part A: For part a I need to write a function to read the students data in the array that I have.

Part B: For part b I need to write a function to find the highest test score.

And the whole code that I have is this

#include <iomanip>
#include <string>
#include <iostream>
#include <fstream>	
#include <array>

using namespace std;

void findHighestScores(int);
struct studentType
{
	string studentFName, studentLName;
	int testScore;
	char grade;
	int studentType[20];
};

int main()
{
	ifstream inFile;
	inFile.open("Ch9Pr1DataIn.txt");

	if (!inFile)
	{
		cout << "Cannot open file.";
		exit(1);
	}

	char showGrade(char grade)
	;{
		switch(int testScore = 0 && 100)
		{
		case 1:
			{
				return 'A';
			}
			break;

		case 2:
			{
				return 'B';
			}
			break;

		case 3:
			{
				return 'C';
			}
			break; 

		case 4:
			{
				return 'D';
			}
			break;

		case 5:
			{
				return 'F';
			}
			break;

		default: break;

		}
	}


	return 0;
}

// Part A
void student_data()
{

}

// Part B
void findHighestScores(int)
{


}

that's just the code that I have right now if any one can help me please I just need something based on where I need to start for part a and b.

[InfinityCounter]

Alright let me try to understand what you wrote. I am just going to go ahead and assume you are still a bit inexperienced with c++, I am going to be frank with you, that explanation left me blank, and I have no idea how to help you. Would you mind reading me the problem.