Question

C++ program that reads students' names followed by their test scores (5 scores) from the given input

file, students.txt. The program should output to a file, output.txt, each student's first name, last name,

followed by the test scores and the relevant grade. All data should be separated by a single space.

Student data should be stored in a struct variable of type StudentType, which has four components:

studentFName and studentLName of type string, an array of testScores of type int and grade of type

char.

Suppose that the class has 20 students. Use an array of 20 components of type StudentType.

The program must contain at least the following functions:

1. A function to read the students' data into an array.

2. A function to assign the relevant grade to each student.

Moreover, other than declaring the variables and opening the input and output files, the function main

should only be a collection of function calls. Use constants where needed. You MUST use structs, an

array of the struct, and an array inside the struct for the scores.

Sample input file:

George Washington 90 100 80 72 66

John Adams 80 75 78 92 83

Thomas Jefferson 99 98 97 96 95

James Madison 72 83 80 93 90

James Monroe 100 89 98 87 78

John Adams 60 70 80 90 100

Andrew Jackson 50 55 60 65 70

Answer 1

Note: Could you plz go through this code and let me know if u need any changes in this.Thank You
=================================

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// students.txt (Input file)

George Washington 90 100 80 72 66
John Adams 80 75 78 92 83
Thomas Jefferson 99 98 97 96 95
James Madison 72 83 80 93 90
James Monroe 100 89 98 87 78
John Adams 60 70 80 90 100
Andrew Jackson 50 55 60 65 70

=================================

#include <fstream>
#include <iostream>
#include <iomanip>
#include <cstring>
#include <cstdlib>
#include <ctime>
#include <vector>
using namespace std;
struct StudentType
{
string firstName;
string lastName;
int scores[5];
char grade;
};
int readFile(StudentType s[]);
void calculateGrade(StudentType s[],int SIZE);
void writeFile(StudentType s[],int SIZE);
int main() {
//Declaring variables
const int SIZE=20;
StudentType s[SIZE];
int cnt=readFile(s);
calculateGrade(s,cnt);
writeFile(s,cnt);

return 0;
}
int readFile(StudentType s[])
{
string fname,lname;
int scr;
ifstream dataIn;
int cnt=0;
dataIn.open("students.txt");
//checking whether the file name is valid or not
if(dataIn.fail())
{
cout<<"** File Not Found **";
return 1;
}
else
{
//Reading the data from the file
while(dataIn>>fname>>lname)
{
s[cnt].firstName=fname;
s[cnt].lastName=lname;
for(int i=0;i<5;i++)
{
dataIn>>s[cnt].scores[i];
}
cnt++;
  
}
dataIn.close();
}
return cnt;
}
void calculateGrade(StudentType s[],int SIZE)
{
int sum=0;
double average=0;
char gradeLetter;
for(int i=0;i<SIZE;i++)
{
sum=0;
for(int j=0;j<5;j++)
{
sum+=s[i].scores[j];
}
average=((double)sum)/5;
  
if (average >= 90 && average<=100)
gradeLetter = 'A';
else if (average >= 80 && average < 90)
gradeLetter = 'B';
else if (average >= 70 && average < 80)
gradeLetter = 'C';
else if (average >= 60 && average < 70)
gradeLetter = 'D';
else if (average < 60)
gradeLetter = 'F';

s[i].grade=gradeLetter;
}
}
void writeFile(StudentType s[],int SIZE)
{
ofstream dataOut;
dataOut.open("studentsOutFile.txt");
for(int i=0;i<SIZE;i++)
{
dataOut<<setw(15)<<left<<s[i].firstName<<setw(15)<<left<<s[i].lastName;
for(int j=0;j<5;j++)
{
dataOut<<setw(5)<<left<<s[i].scores[j];
}
dataOut<<setw(5)<<left<<s[i].grade<<endl;
}
  
dataOut.close();
  
}

=============================

// studentsOutFile (output file):

=====================Could you plz rate me well.Thank You