Question

Write a C++ program to keep records and perform statistical analysis for a class of 20 students. The information of each student contains ID, Name, Sex, quizzes Scores (2 quizzes per semester), mid-term score, final score, and total score.

The program will prompt the user to choose the operation of records from a menu as shown below:
==============================================

                                           MENU

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

1. Add student records

2. Delete student records

3. Update student records

4. View all student records

5. Calculate an average of a selected student’s scores

6. Show student who gets the max total score

7. Show student who gets the min total score

8. Find student by ID

9. Sort records by total scores


Enter your choice:1
  
Note: All students records store in an array of structures

Answer 1

Hi,

According to Chegg rules, I can do fist 4 points.

Please go through code and output.

CODE:

#include <iostream>

#include <string>

using namespace std;

#define MAX 20 // maximun student record macro

/* structure */

typedef struct student {

int ID;

string name;

string sex;

int quizzesScores1;

int quizzesScores2;

}ST;

void printMenu(void) // print manu

{

cout << "1. Add student records\n2. Delete student records\n3. Update student records\n4. View all student records\n5. 5. Calculate an average of a selected student’s scores\n6. Show student who gets the max total score\n7. Show student who gets the min total score\n8. Find student by ID\n9. Sort records by total scores" << endl;

}

void add(ST * s) // add record

{

cout << "Enter ID Name Sex quizScore1 quizScore2: ";

cin >> s->ID >> s->name >> s->sex >> s->quizzesScores1 >> s->quizzesScores2 ;

}

bool deleteRecord(int ID, ST array[],int count) // delete record

{

for(int i=0; i<count; i++)

{

if(array[i].ID == ID)

{

for(int j = i; j< count-1 ; j++)

{

array[j] = array[j+1];

}

return true;

}

}

return false;

}

/* update record */

bool update(int ID, ST array[], int count)

{

for(int i=0; i<count; i++)

{

if(array[i].ID == ID) // find id

{

cout << "Enter Name Sex quizScore1 quizScore2: ";

cin >> array[i].name >> array[i].sex >> array[i].quizzesScores1 >> array[i].quizzesScores2 ;

return true;

}

}

return false;

}

int main()

{

int choice = 0;

ST array[20];

int count = 0;

int ID;

while(1)

{

printMenu();

cin >> choice;

switch(choice)

{

case 1 : // add student record

add(&array[count]);

count++;

break;

case 2: // delete student record based on ID

cout << "Enter ID ";

cin >> ID;

if(true == deleteRecord(ID, array, count))

{

count--;

}

else

{

cout << "ID not found" << endl;

}

break;

case 3: // update student record based on ID

cout << "Enter ID: ";

cin >> ID;

if(true == update(ID, array, count))

{

cout << "Updated successfully" << endl;

}

else

{

cout << "Update unsuccessful" << endl;

}

break;

case 4: // print add records

for(int i=0 ; i< count; i++)

{

cout << "ID : " << array[i].ID << endl;

cout << "Name : " << array[i].name << endl;

cout << "Sex :" << array[i].sex << endl;

cout << "Quiz 1 : " << array[i].quizzesScores1 << endl;

cout << "Quiz 2 : " << array[i].quizzesScores2 << endl;

}

break;

}

}

}

OUTPUT: