/*

1) Write validation for student names that reject strings with odd chars like % or @

You may use c_str, isalpha(), and ispace() functions from c-string and string classes/libraries.

2) Write a function to validate grade data (boolean?)

*/

#include

using namespace std;

class Student{

public:

string name;

int ID;

int score;

string grade;

void setStudent(string name, int ID, int score);

};

// Class member function to enter the details

void Student :: setStudent(string name, int ID, int score){

this -> name = name;

this -> ID = ID;

this -> score = score;

// Score to grade conversion

if(score<=100 && score>=93)

this -> grade = "A";

if(score<=92 && score>=90)

this -> grade = "A-";

if(score>=87 && score<=89)

this -> grade = "B+";

if(score>=83 && score<=86)

this -> grade = "B";

if(score>=80 && score<=82)

this -> grade = "B-";

if(score>=77 && score<=79)

this -> grade = "C+";

if(score>=73 && score<=76)

this -> grade = "C";

if(score>=70 && score<=72)

this -> grade = "C-";

if(score>=67 && score<=69)

this -> grade = "D+";

if(score>=60 && score<=66)

this -> grade = "D";

if(score>=0 && score<=59)

this -> grade = "F";

}

int main(){

int i=0;

vector list;

stack stack;

cout << "==========================================================================================";

cout << " |This program will help you create a student roster. Simply follow the menu instructions.| ";

cout << "==========================================================================================";

while(1){

cout<<" 1.Create student record"<

cout<<"2.Display student record"<

cout<<"3.Update student record"<

cout<<"4.Delete student record"<

cout<<"5.Calculate average score of class"<

cout<<"6.Exit program"<

cout<<" Please select an option: ";

cin>>i;

cout<

// The input "6" will end the process

if(i==6)

break;

if(i==1){

Student s; //A new variable in Student format is declared

string name;//Name variable

int ID; //ID

int score; //To store the score

// Entry of student data

cout<<"Enter student's name: ";

cin>>name;

cout<

cin>>ID;

cout<

cin>>mark;

// A new student is created and added to the vector

s.setStudent(name,ID,mark);

list.push_back(s);

}

// To display the data

if(i==2){

int id;

cout<<"Enter ID to display: ";

cin>>id;

int j=0;

for(j=0; j

if(list[j].ID==id){

cout<<"Student: "<

cout<<"ID: "<

cout<<"Score: "<

cout<<"Grade: "<

break;

}

}

if(j==list.size())

cout<<"Data Not Available"<

}

// To update the data

if(i==3){

int id;

cout<<"Enter ID to update: ";

cin>>id;

int j=0;

for(j=0; j

if(list[j].ID==id){ // Finds the location of the student in the roster using student ID

Student s;

string name;

int ID;

int score;

cout<<"Enter student's name: ";

cin>>name;

cout<<" Enter student's ID: ";

cin>>ID;

cout<<" Enter student's grade: ";

cin>>score;

s.setStudent(name,ID,score);

list[j]=s;

break;

}

}

if(j==list.size())

cout<<"Data Not Available"<

}

// To delete a student

if(i==4){

int id;

cout<<"Enter ID to delete: ";

cin>>id;

// 1. Traverse until you find the student

// 2. Stack all the students after the required student's location

// 3. Pop the student to be deleted.

// 4. Put back the stacked students

for(int j=0; j

if(list[j].ID==id){

for(int k=list.size()-1; k!=j; k--){

Student r=list[k];

list.pop_back();

stack.push(r);

}

list.pop_back();

while(!stack.empty()){

list.push_back(stack.top());

stack.pop();

}

break;

}

}

}

// To calculate average score of students

if(i==5){

int total=0;

for(int j=0; j

total=total+list[j].score;

cout<<"Average Score: "<

}

}

}

/*

Output:

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

|This program will help you create a student roster. Simply follow the menu instructions.|

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

1.Create student record

2.Display student record

3.Update student record

4.Delete student record

5.Calculate average score of class

6.Exit program

Please select an option: 1

Enter student's name: Felix

Enter student's ID: 99693

Enter student's grade: 99

1.Create student record

2.Display student record

3.Update student record

4.Delete student record

5.Calculate average score of class

6.Exit program

Please select an option: 4

Enter ID to delete: 99693

1.Create student record

2.Display student record

3.Update student record

4.Delete student record

5.Calculate average score of class

6.Exit program

Please select an option: 1

Enter student's name: Pedro

Enter student's ID: 99330

Enter student's grade: 98

1.Create student record

2.Display student record

3.Update student record

4.Delete student record

5.Calculate average score of class

6.Exit program

Please select an option: 2

Enter ID to display: 99693

Data Not Available

1.Create student record

2.Display student record

3.Update student record

4.Delete student record

5.Calculate average score of class

6.Exit program

Please select an option: 5

Average Score: 98

1.Create student record

2.Display student record

3.Update student record

4.Delete student record

5.Calculate average score of class

6.Exit program

Please select an option:

*/