I need help with some code

[Ravund]

I need help with this....

develop a C++ program for reporting grades for a class. Your program should
read in an input file of student grades records, and it should produce an output file of
student grades records plus a report (output to monitor) of grade distributions. Your
program would read in the records from the file one record at a time (sequentially) and
output one record at a time to the output file, it update an array of grades. After building
the array of grades, then it processes the array to print the grade distributions histogram.
The program will also build array each student score in the class and then sort it (use
bubble sort) then out put the LOWEST SCORE IN CLASS, HIGHEST SCORE IN
CLASS, and NUMBER OF STUDENTS.

 #include<stdio.h>
#include<iostream>
#define LEN 25
#define S 5
using namespace std;
struct
stud_rec

float num_grade;
char let_grade; };
struct stud_rec records[S];
void letter_grade(double average,
double points);
void single_Student (int N);
const int num_Exam = 4;
const int num_Lab = 6;
int gradeE [num_Exam];
int gradeL [num_Lab];
int exam, final, lab, quiz, limit, temp;
double gradeE_avg, gradeL_avg;

 

int main()

{

 

int n,b,i,rec;

 

char fname[LEN+1];

 

double points,average;

FILE *fp;

printf("Please Enter a file name to store the data: ");

scanf ("%s", &fname);

fp = fopen(fname,"w");

printf("How many records do you want to enter?: ");

scanf("%d", &rec);

 

for(i=0;i<rec;i++)

{

printf("Enter the student name: ");

scanf("%s", &records.name);

fprintf(fp,"\n%s\n",records.name);

n=0;

for (b=0;b<S;b++)

{

n++;

printf("Enter Grade %d: ",n);

scanf("%f", &records.num_grade);

fprintf(fp,"%.1f ", records.num_grade);

}

printf("\n");

printf("My Grading Report\n");

printf("Student Grade1 Grade2 Grade3 Grade4 Grade5 Tpts FinalGrade LetterGrade\n");

printf("--------------------------------------------------------------------------------\n");

printf("%s", records.name);

 

for (b=0;b<S;b++)

{

printf("\t %.1f",records.num_grade);

} points=0;

for(b=0;b<S;b++)

{ points=points+records.num_grade;

} average = (points/S);

printf("\t %.1f",points);

printf("\t %.1f", average);

letter_grade(average,points);

printf("\n");

printf("--------------------------------------------------------------------------------\n");

printf("Class Average: %.lf\n\n", average);

} fclose(fp);

 

}

 

void letter_grade(double average, double points)

{

 

if (average>=80)

{

printf("\t\tA");

}

 

if ((average>=70) && (average<80))

{

printf("\t\tB");

}

 

if ((average>=60)&&(average<70))

{

printf("\t\tC");

}

 

if ((average>=50)&&(average<60))

 

{

printf("\t\tD");

}

 

else if(average<50)

{

printf("\t\tF");

}

}

 

//multiple students

 

int num_Students();

{

cout << "How many students are in the class?" << endl;

cin >> num_Students;

cout << endl;

 

for (int i=1; i <= num_Students; i++)

single_Students(i);

}

 

 

//obtain the exam grades for each student

 

void single_Student(int N)

{

 

int exam [4];

cout << "Enter five exam scores the student " << N << endl;

cin >> exam[0];

cin >> exam[1];

cin >> exam[2];

cin >> exam[3];

}

 

//lab scores for the student

 

void single_Student(int N)

{

 

int lab [6]

cout >>"Enter five lab scores for the student " << N << endl;

cin >> lab[0];

cin >> lab[1];

cin >> lab[2];

cin >> lab[3];

cin >> lab[4];

cin >> lab[5];

}

 

//do bubble sort for exam

limit = num_Exam - 2;

 

for (pass = 1; pass <= num_Exam -1; ++pass)

{

 

for (exam = 0; exam <= limit; ++exam)

 

if(gradeE[exam] > gradeE[exam - 1])

{

temp = grade[exam];

gradeE[exam + 1];

gradeE[exam + 1] = temp;

}

--limit;

}

 

//bubble sort for lab

limit = num_Lab - 2;

 

for (pass = 1; pass <= num_Lab -1; ++pass)

{

 

for (lab = 0; lab <= limit; ++lab)

 

if(gradeL[lab] > gradeL[lab - 1])

{

temp = gradeE[lab];

gradeL[lab + 1];

gradeL[lab + 1] = temp;

}

--limit;

}

 

//histogram

grade_avg = (num_Exam);

cout << endl;

cout << "The average exam grade is " << "85" << endl;

cout << "Enter four exam scores for the student number " << 2 << endl;

cout << "The average exam grade is " << "80" << endl;

cout << "Enter four exam scores for the student number " << 3 << endl;

cout << "The average exam grad is " << "80" << endl;

grade_avg = (grade[1] +



{

 

char name[LEN+1];


<iostream>