PURPOSE c learn to work with arrays structures and IO to be

PURPOSE:

c++

learn to work with arrays, structures, and I/O

to be familiar with Visual Studio environment

Description:

In this assignment, please write a program that provides a way for you to search and display information of all students in the class. Student records including c# and scores of multiple categories are saved in the file point.dat. Your program should: • First, read all student information from the text file and store them in an array.

Prompt user to input a valid c#, and the program display all information of the student with the given c#.

Then display information of all students. Requirements

You are required to

declare a structure Student to hold all information of a student, such as C# and all scores.

declare a local variable Roster in main function as an array of Student structure. This array will hold information of all students.

declare and implement the following functions:

a function to read from the text file o a function to print one student

a function to print information of all students

the name of the source file must be: ola1.cpp.

Global variables are not allowed.

here\'s the file:

ID              CLA   OLA   Quiz   Homework   Exam   Bonus   Total   FinalGrade  

c088801    10        15      4         15                 56       5

c088802     9          12      2         11                46       2

c088803     8          10      3         12                50       1

c088804     5          5      3         10                  53       3

c088805     3         11      1         10                 45       0

c088806     8        14      2         11                  40      -1

c088807     4         12      2         12                 48      -2

c088808    10        10      3         11                 36       0

c088809     8          8      3         11                  39       0

c088810     6          9      4          9                   47       3

c088811     8          7      3         13                  41       3

c088812     4         11      3         11                 37       1

c088813     9         15      2          8                  50       2

c088814     8         12      2         10                48       4

c088815     6          8      1          7                  45       1

c088816     7          7      2          6                  51       2

c088817     8          9      2         12                38       2

Solution

Here is the C++ code for you, as per your requirements:

#include <iostream>
#include <fstream>
using namespace std;
//declare a structure Student to hold all information of a student, such as C# and all scores.
typedef struct Student
{
string ID;
int CLA;
int OLA;
int Quiz;
int Homework;
int Exam;
int Bonus;
int Total;
char FinalGrade;
}Student;
//a function to read from the text file
int readFile(ifstream &fin, Student Roster[])
{
string temp;
getline(fin, temp);
int count = 0;
while(!fin.eof())
{
fin>>Roster[count].ID>>Roster[count].CLA>>Roster[count].OLA>>Roster[count].Quiz;
fin>>Roster[count].Homework>>Roster[count].Exam>>Roster[count].Bonus;
count++;
}
return count;
}
//a function to print one student
void printStudent(Student Roster[], string ID, int count)
{
for(int i = 0; i < count; i++)
if(Roster[i].ID == ID)
{
cout<<\"ID: \"<<Roster[i].ID<<endl;
cout<<\"CLA: \"<<Roster[i].CLA<<endl;
cout<<\"OLA: \"<<Roster[i].OLA<<endl;
cout<<\"Quiz: \"<<Roster[i].Quiz<<endl;
cout<<\"Homework: \"<<Roster[i].Homework<<endl;
cout<<\"Exam: \"<<Roster[i].Exam<<endl;
cout<<\"Bonus: \"<<Roster[i].Bonus<<endl;
cout<<\"Total: \"<<Roster[i].Total<<endl;
cout<<\"FinalGrade: \"<<Roster[i].FinalGrade<<endl;
}
}
//a function to print information of all students
void printAllStudents(Student Roster[], int count)
{
for(int i = 0; i < count; i++)
printStudent(Roster, Roster[i].ID, count);
}
int main()
{
//declare a local variable Roster in main function as an array of Student structure.
Student Roster[30];
//First, read all student information from the text file and store them in an array.
ifstream fin;
fin.open(\"point.dat\");
int count = readFile(fin, Roster);
//Prompt user to input a valid c#
cout<<\"Enter the C# to search the student details: \";
string ID;
cin>>ID;
//display all information of the student with the given c#.
printStudent(Roster, ID, count);
//Then display information of all students.
printAllStudents(Roster, count);
}