modify the code so i can submit it without plagiarism

Question

Main.cpp

#include "Unsortedtype.h"

using namespace std;

class StudentInfo {

private:

int id;

std::string name;

float cgpa;

public:

StudentInfo();

StudentInfo(const int&, const std::string&, const float&);

friend std::ostream& operator<< (std::ostream& out, const StudentInfo& std);

friend bool operator== (const StudentInfo& std1, const StudentInfo& std2);

};

StudentInfo:: StudentInfo() {

id = 0;

name = "";

cgpa = 0;

}

StudentInfo:: StudentInfo(const int& a, const std::string& b, const float& c) {

id = a;

name = b;

cgpa = c;

}

std::ostream& operator<< (std::ostream& out, const StudentInfo& std) {

out << std.id << ' ' << std.name << ' ' << std.cgpa;

return out;

};

bool operator== (const StudentInfo& std1, const StudentInfo& std2) {

return std1.id == std2.id;

}

Answer 1

Create a data file that contains the student records so that you do not have to input them every time the programs runs.

Are you trying to sort them?

using namespace std;

#include

#include

#include

#include

#include

typedef

class Student

{

protected:

long studentNum;

string studentName;

float studentGPA;

public:

Student(long longIntNum, string strName, float gpa)

{

studentNum = longIntNum;

studentName = string(strName);

studentGPA = gpa;

}

Student() { studentNum=0; studentGPA=0.0f; studentName=""; }

Student(const Student&student)

{

studentNum = student.studentNum;

studentName = string(student.studentName);

studentGPA = student.studentGPA;

}

string GetStudentName() { return(studentName); }

float GetStudentGPA() { return(studentGPA); }

long GetStudentNum() { return(studentNum); }

void SetStudentGPA(float gpa) { studentGPA = gpa; }

} *TStudent;

#define STUDENT_SIZE (sizeof(Student))

//callback functions passed to quicksort

//sorts by id#

int CompareStudentByIdNum(const void * rec1, const void * rec2)

{

int iReturn=0;

TStudent studentRec1 = (TStudent)rec1;

TStudent studentRec2 = (TStudent)rec2;

long longIntStudentNum1 = studentRec1->GetStudentNum();

long longIntStudentNum2 = studentRec2->GetStudentNum();

if (longIntStudentNum1 != longIntStudentNum2)

{

iReturn = (longIntStudentNum1 > longIntStudentNum2) ? 1 : -1;

}

return(iReturn);

}

int CompareStudentByName(const void * rec1,const void * rec2)

{

int iReturn=0;

TStudent studentRec1 = (TStudent)rec1;

TStudent studentRec2 = (TStudent)rec2;

string studentNameStr1 = studentRec1->GetStudentName();

string studentNameStr2 = studentRec2->GetStudentName();

iReturn = studentNameStr1.compare(studentNameStr2);

if (iReturn==0) //names are the same, sorts by id #

{

iReturn = CompareStudentByIdNum(rec1,rec2);

}

return ( iReturn );

}

int CompareStudentByGPA(const void * rec1, const void * rec2)

{

int iReturn=0;

TStudent studentRec1 = (TStudent)rec1;

TStudent studentRec2 = (TStudent)rec2;

float gpa1 = studentRec1->GetStudentGPA();

float gpa2 = studentRec2->GetStudentGPA();

if (gpa1 != gpa2)

{

iReturn = gpa1 > gpa2 ? 1 : -1;

}

else //GPAs are the same, sorts by id #

{

iReturn = CompareStudentByIdNum(rec1,rec2);

}

return ( iReturn );

}

typedef struct _TStudentDB

{

TStudent students;

int nCount;

} * TStudentDB;

#define STUDENT_DB_SIZE (sizeof(struct _TStudentDB))

void Read(TStudentDB studentDB, char * filename)

{

char inbuff[1025];

FILE * fptr = fopen(filename,"r");

if (fptr!=NULL)

{

fscanf(fptr,"%d",&studentDB->nCount);

int n = studentDB->nCount;

//eats the newline

//cout << n << " records in the file " << endl;

fgets(inbuff,1025,fptr);

studentDB->students = new Student[n];

for (int iLoop=0; iLoop

{

long longIntStudentNum;

float gpa;

char nameStr[1025];

fscanf(fptr,"%ld %s %f",&longIntStudentNum,nameStr,&gpa);

string strName(nameStr);

//cout << longIntStudentNum << " : " << strName << " : " << gpa << endl;

studentDB->students[iLoop] = Student(longIntStudentNum,strName,gpa);

}

}

else

{

cout << "error reading input " << endl;

}

}

void Dump(TStudentDB studentDB, char * strMsg=NULL)

{

if (strMsg!=NULL)

{

cout << "*******************************************************" << endl;

cout << strMsg << endl;

}

cout << "*******************************************************" << endl;

cout << "id # name gpa " << endl;

for (int iLoop=0; iLoopnCount; iLoop++)

{

TStudent curStudentRec = &studentDB->students[iLoop];

cout << curStudentRec->GetStudentNum() << " " << curStudentRec->GetStudentName() << " " << curStudentRec->GetStudentGPA() << endl;

}

}

main()

{

struct _TStudentDB studentDB;

Read(&studentDB,(char*) "E:\\students.dat");

qsort(studentDB.students,studentDB.nCount,STUDENT_SIZE,CompareStudentByIdNum); //change the function to sort in another order

//CompareStudentByName

//COmpareStudentByGPA

Dump(&studentDB /* , (char*) "SORTED BY ..... " */ );

}

//--------------------------------------------

~users\pab\home> cat E:students.dat

5

51381 Baldwin:Patrick 4.0

33333 Sullivan:David 3.3

69711 Abels:Jennifer 4.0

66666 Roy:Mark 1.5

43210 Ocampeo:Mary 3.4