Question

I have homework that asks to create C++ program to include:

1A) Create and populate a parallel-array Data Structure using the following code:

//Student grade records are stored in a parallel-array Data Structure.
//Here is the code to generate and populate
//the Parallel-Array Data Structure:

const int NG = 4; //Number of Grades

string names[] = {"Amy Adams", "Bob Barr", "Carla Carr",
"Dan Dobbs", "Elena Evans"
};

int assessment[][NG]= { {98,87,93,88},
{78,86,82,91},
{66,71,85,94},
{72,63,77,69},
{91,83,76,60}
};   

1B) Define a Record Data Structure for student grade records.
It should have the same fields that you defined in the
Parallel-Array Data Structure(part 1A) with additional
fields for average assessment score and grade.

2) Declare an array of records.

3) Populate the Record Data Structure with the data which
resides in the Parallel-Array Data Structure(part 1A).

4) Define a function to display formatted student records.
   
5) Define a function to compute average and
the populate average field for each record.

6) Define a function to compute the grade and
the populate grade field for each record.

7) Define a function to compute class average.

8) Define a function to compute class standard deviation.

9) Display class average and standard deviation.

10) Demonstrate ALL functions that you created.

Answer 1

Here is the answer for your question in C++ Programming Language.

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NOTE : According to the HOMEWORKLIB POLICY, experts are allowed to answer a max of four sub parts when given multiple sub parts ina single question. Answered as per the HOMEWORKLIB POLICY. Apologie for this.

I have answered parts (1- 7)

CODE :

#include<iostream> #include<string> #include<iomanip> using namespace std; //4) Define a function to display formatted student records. void displayStudentRecords(); /*5) Define a function to compute average and the populate average field for each record.*/ void computeAverage(); /*6) Define a function to compute the grade and the populate grade field for each record.*/ void computeGrade(); //7) Define a function to compute class average. void computeClassAverage(); /*1B) Define a Record Data Structure for student grade records.    It should have the same fields that you defined in the    Parallel-Array Data Structure(part 1A) with additional    fields for average assessment score and grade.*/ struct Record{    string name;    int assessment[4];    double average;    char grade; }; //2) Declare an array of records. struct Record records[5]; //Since there are 5 student names in names[] array int main(){       //1A) Create and populate a parallel-array Data Structure using the following code:    //Student grade records are stored in a parallel-array Data Structure.    //Here is the code to generate and populate    //the Parallel-Array Data Structure:      const int NG = 4; //Number of Grades      string names[] = {"Amy Adams", "Bob Barr", "Carla Carr","Dan Dobbs", "Elena Evans"};       int assessment[][NG]= { {98,87,93,88},                            {78,86,82,91},                            {66,71,85,94},                            {72,63,77,69},                            {91,83,76,60} };              /*3) Populate the Record Data Structure with the data which        resides in the Parallel-Array Data Structure(part 1A).*/    for(int i=0;i<5;i++){        records[i].name = names[i];        for(int j=0;j<4;j++)            records[i].assessment[j] = assessment[i][j];              }    //Call function displayStudentRecords    displayStudentRecords();    //Call function computeAverage    computeAverage();    //Call function computeGrade()    computeGrade();         //Display average and grades for each records    cout << left << setw(20) << "Name " << left << setw(20) << "Average " << left << setw(20) << "Grade" << endl;       cout << "*******************************************************" << endl;    for(int i=0;i<5;i++){        cout << left << setw(20) << records[i].name << left << setw(20) << records[i].average << left << setw(20) << records[i].grade << endl;             }    //Call method computeClassAverage()    computeClassAverage(); } void displayStudentRecords(){    cout << "********************************************************************************************" << endl;    cout << left << setw(20) << "Name " << left << setw(20) << "Assessment 1 " <<    left << setw(20) << "Assessment 2" << left << setw(20) << "Assessment 3" << left << setw(20) << "Assessment 4" << endl;    cout << "********************************************************************************************" << endl;    for(int i=0;i<5;i++){        cout << left << setw(20) << records[i].name << left << setw(20) << records[i].assessment[0]        << left << setw(20) << records[i].assessment[1] << left << setw(20) << records[i].assessment[2] << left << setw(20) << records[i].assessment[3] << endl;    } } //Method that computes average for each record void computeAverage(){    int sum = 0;      for(int i=0;i<5;i++){        sum = 0;        for(int j=0;j<4;j++)            sum += records[i].assessment[j];        records[i].average = sum/(double)4;    } } //Method that computes grade for each record void computeGrade(){    for(int i=0;i<5;i++){        if(records[i].average >=90 && records[i].average <= 100){            records[i].grade = 'A';        }        else if(records[i].average >=80 && records[i].average < 90){            records[i].grade = 'B';        }        else if(records[i].average >= 70 && records[i].average < 80){            records[i].grade = 'C';        }        else if(records[i].average >= 60 && records[i].average < 70){            records[i].grade = 'D';        }        else if(records[i].average < 60){            records[i].grade = 'F';        }    } } //Method that computes class average void computeClassAverage(){    double sum = 0;    for(int i=0;i<5;i++){        sum += records[i].average;    }    cout << "*****************************" << endl;    cout << "Class average : " <<fixed << setprecision(2) << sum/5; }

SCREENSHOTS :

Please see the screenshots of the code below for the indentations of the code.

1 #include<iostream> 2 #include<string> 3 #include<iomanip> 4 5 using namespace std; 6 7 1/4) Define a function to display formatted student records. 8 void displayStudentRecords(); 9 10 /*5) Define a function to compute average and 11 the populate average field for each record. */ 12 void computeAverage(); 13 14 /*6) Define a function to compute the grade and 15 the populate grade field for each record. */ 16 void computeGrade(); 17 18 1/7) Define a function to compute class average. 19 void computeClassAverage(); 20 21 /*1B) Define a Record Data Structure for student grade records.|| 22 It should have the same fields that you defined in the 23 Parallel-Array Data Structure (part 1A) with additional 24 fields for average assessment score and grade. */ 25 p struct Record 26 string name; 27 int assessment[4]; 28 double average; 29 char grade; 30 }; 31 1/2) Declare an array of records.

олол 32 struct Record records[5]; //Since there are 5 student names in names[] array 33 int main() { 34 35 //14) Create and populate a parallel-array Data Structure using the following code: 36 //Student grade records are stored in a parallel-array Data Structure. 37 1/Here is the code to generate and populate 38 //the Parallel-Array Data Structure: 39 const int NG = 4; //Number of Grades 40 string names[] = {"Amy Adams", "Bob Barr", "Carla Carr", "Dan Dobbs", "Elena Evans"}; 41 42 int assessment[][NG]= { {98,87,93,88}, 43 {78,86,82,91}, 44 {66,71,85,94}, 45 (72,63,77,69}, 46 {91,83,76,60} }; 47 48 /*3) Populate the Record Data Structure with the data which 49 resides in the Parallel-Array Data Structure(part 1A). */ 50 for(int i=0;i<5; i++){ 51 records[i].name name = names[i]; 52 for(int j=0; j<4;j++) 53 records[i].assessment[j] = assessment[i][j]; 54 } 55 //Call function displayStudentRecords 56 displayStudentRecords(); 57 //Call function computeAverage 58 computeAverage(); 59 //Call function computeGrade() 60 computeGrade(); 61 62 //Display average and grades for each records

********* } } 63 cout << left << setw(20) << "Name " << left << setw(20) << "Average << left << setw(20) << "Grade" << endl; 64 65 cout << "***** << endl; 661 for(int i=0;i<5;i++){ 67 cout << left << setw(20) « records[i].name « left << setw(20) « records[i].average « left << setw(20) « records[i].grade << endl; 68 69 //Call method computeClassAverage) 70 computeClassAverage(); 71 729 void displayStudent Records() { 73 cout << *** ********" << endl; 74 cout << left << setw(20) << "Name" << left << setw(20) << "Assessment 1 " << 75 left << setw(20) << "Assessment 2" << left << setw(20) << "Assessment 3" << left << setw(20) << "Assessment 4" << endl; 76 cout << << endl; 77 for(int i=0;i<5;i++){ 78 cout << left << setw(20) << records[i].name « left << setw(20) « records[i].assessment[@] 79 << left << setw(20) << records[i].assessment[1] << left << setw(20) << records[i].assessment[2] 80 k< left << setw(20) << records[i].assessment[3] << endl; 81 82 83 //Method that computes average for each record 84 9 void computeAverage() { 85 int sum = 0; 86 for(int i=0;i<5;i++){ 87 sum = 0; 88 for(int j=0; j<4; j++) 89 sum += records[i].assessment[j]; 90 records[i].average = sum/(double)4; 91 92 93 //Method that computes grade for each record 94 void computeGrade() { } I مه ܝܟ [ }

} } بہ 코 } 95 for(int i=0;i<5;i++){ 96 if (records[i].average >=90 && records[i].average <= 100){ 97 records[i].grade = 'A'; 98 99 else if (records[i].average >=80 && records[i].average <90){ 100 records[i].grade = 'B'; 101 102 else if (records[i].average >= 70 && records[i].average < 80){ 103 records[i].grade = 'C'; 104 105 else if (records[i].average >= 60 && records[i].average < 70){ 106 records[i].grade = 'D'; 107 108 else if (records[i].average < 60){ 109 records[i].grade = 'F'; 110 111 112 113 //Method that computes class average 114 void computeClassAverage(){ 115 double sum = 0; 116 for(int i=0;i<5;i++){ 117 sum += records[i].average; 118 119 cout << "***** << endl; 120 cout << "Class average : <<fixed << setprecision(2) << sum/5; 121 ہ مه } }

OUTPUT :

******* ********* Name Assessment 1 Assessment 2 Assessment 3 Assessment 4 *************** **************************************************************************** Amy Adams 98 87 93 88 Bob Barr 78 86 82 91 Carla Carr 66 71 85 94 Dan Dobbs 72 63 77 69 Elena Evans 91 83 76 60 Name Average Grade ********** ************* ********** Amy Adams 91.5 A Bob Barr 84.25 B Carla Carr 79 C Dan Dobbs 70.25 C Elena Evans 77.5 C ***************************** Class average : 80.50 Process exited after 0.313 seconds with return value o Press any key to continue

Any doubts regarding this can be explained with pleasure :)