Question

C++ Object Oriented Programming Programming Assignment #4 Structures Create a structure representing a student. The member variables should include student name, student ID, and four test grades for the student (an array of four grades as a member variable). Prompt the user to enter the name, ID and the four test results. Store all the data in the structure. Calculate the average of the three highest grades. dropping the lowest one. Display the student's nome, ID number, four test grades, and the average of the three highest grades. Use a loop to repeat the questions for the next student. Terminate the program when the user decides to stop Create three separate functions, one to get the information from the user one to perform calculations, and another one to display the information. Do NOT use any global variables. Pass the object to your functions. In one of the functions, pass by value, one by reference, and one by pointer. This way, you will practice all different ways objects can be passed to functions. You can decide on the functions' return type. You can also pass the pointer as a constant pointer if necessary. Requirements: 1) Comments are extremely important. Add comments as you code. Do NOT wait until you are done coding. Also in the beginning of your codes include the following comments: Purpose of the program b. Name of the author c. Date 2) Use proper naming conventions for your variables and functions 3) Tell the user what the program is all about, and the game works. Do NOT start the program with "Enter a number'l! 4) Test, test, and test.

I'm falling behind on my hw and I can really use a hand with using structures in C,++

Answer 1

Done accordingly. Comment for further help. Please uprate

Code:

#include<iostream>
#include<string>
using namespace std;

typedef struct{
   string name;
   int id;
   double grades[4];
   double average;
}Student;

void readStudentData(Student &student){

   cout<<"Please give student name :";
   cin>>student.name;
   cout<<"Please give student id :";
   cin>>student.id;
   for(int j=0;j<4;j++){
       cout<<"Please give grade for Test "<<j+1<<" :";
       cin>>student.grades[j];
   }
}

void calculateAverage(Student *student){
   double min;
   double sum;

   min=student->grades[0];
   sum=student->grades[0];
   for(int j=1;j<4;j++){
       sum=sum+student->grades[j];
       if(student->grades[j]<min)
           min=student->grades[j];
   }
   sum=sum-min;
   student->average=sum/3;
}

void printStudentData(Student student){
   cout<<"Student Name :"<<student.name<<endl;
   cout<<"Student ID :"<<student.id<<endl;
   for(int j=0;j<4;j++){
       cout<<"Grade for Test "<<j+1<<" :"<<student.grades[j]<<endl;
   }
   cout<<"Average of the highest three grades is:"<<student.average<<endl<<endl;
}

void main(){
   Student students[100];
   int size=0;
   Student temp;
   string choice;
   cout<<"*********************************************\n";
   cout<<"This program will get student details and print them after calculating average.\n";
   cout<<"\n*********************************************\n\n";
   while(size<100){
       readStudentData(temp);
       cin.ignore();
       cin.clear();
       students[size]=temp;
       calculateAverage(&temp);
       printStudentData(temp);
       size++;
       cout<<"Do you want to contiue :(Press n to exit)";
       cin>>choice;
       if(choice=="n")
           break;

   }

   system("pause");
}

Output:

************************************** This program will get student details and print them after calculating average. Please give student name :studi Please give student id : 1234 Please give grade for Test 1 :10 Please give grade for Test 2 :20 Please give grade for Test 3:20 Please give grade for Test 4 :20 Student Name :studi Student ID : 1234 Grade for Test 1 : 10 Grade for Test 2 :20 Grade for Test 3 :20 Grade for Test 4 :20 Average of the highest three grades is:20 Do you want to contiue : (Press n to exity Please give student name :stud2 Please give student id : 12341 Please give grade for Test 1 :16 Please give grade for Test 2 :15 Please give grade for Test 3 :17 Please give grade for Test 4 : 10 Student Name :stud2 Student ID : 12341 Grade for Test 1 : 16 Grade for Test 2 :15 Grade for Test 3 :17 Grade for Test 4 :10 Average of the highest three grades is: 16 Do you want to contiue : (Press n to exit)n Press any key to continue ...