GROUP ASSIGNMENT 3 & 4

#include <bits/stdc++.h>
#include <sstream>
using namespace std;

//Feng Yiyang A20EC4020
//MD SIRAJUM MUNEER A20EC4035
//TANSHIBA NAORIN PRAPTI A20EC4051
//PT1 Group 2
float grade_point(string grade){
if ("A" == grade)
return 4.0;
if ("A-" == grade)
return 3.67;
if ("B+" == grade)
return 3.33;
if ("B" == grade)
return 3.0;
if ("B-" == grade)
return 2.67;
if ("C+" == grade)
return 2.33;
return 0.0;
}

//main function
int main()
{

//filestream variable file
fstream file;
//data will store all the records
string data[100][13], word;
//t means total words, r means row
//k means columns
int k=0, r=-1, t=-1;

//opening file
file.open("student.txt");

//extracting words from the file
while (file >> word)
{
//storing the word in the 2D file
t++;
if (t%7 == 0){
k=0;
r++;
}

data[r][k++]=word;
}
//closing the file
file.close();

//total no. of records
t = t/7+1;

//to store the average GPA of the class
float avg_GPA = 0;
//for the students who score above 3.5
string names[100];
int l=-1;

//iterating for the each record
for (int i=0; i<t; i++){

//temp for storing the grade points of the 5 subjects
float GPA=0, temp[5];

//calculating the GPA
for (int j=0; j<5; j++){
//calling the function to convert grade to points
temp[j] = grade_point(data[i][2+j]);
//storing the ans in the string 2D array
std::ostringstream ss;
ss<<temp[j];
data[i][7+j] = ss.str();

//if ans is 0, changing it to 0.0
if (data[i][7+j] == "0")
data[i][7+j] = "0.0";
}

//calculating the GPA
GPA = (temp[0]*3 + temp[1]*3 + temp[2]*3 +
temp[3]*2 + temp[4]*2)/(3+3+3+2+2);
avg_GPA += GPA;

if (GPA >= 3.5)
names[++l] = data[i][1];

//storing the GPA in the string format in the array
std::ostringstream ss;
ss<<GPA;
data[i][12] = ss.str();

}
std::ostringstream ss;
ss<<avg_GPA/t;
string average_GPA = ss.str();

//opening the file for writing
ofstream ofile;
ofile.open("Grades.txt");

//writing in the file (heading)
ofile<<"Matric no Name ";
ofile<<"Sub1\tSub2\tSub3\tSub4\tSub5\tGPA\n";
//writing each line of the records in the file
for (int i=0; i<t; i++){
ofile<<data[i][0]<<" ";
ofile<<data[i][1];
for(int j=0; j<25-data[i][1].size(); j++)
ofile<<" ";
for (int j=7; j<13; j++)
ofile<<data[i][j]<<"\t";
ofile<<"\n";
}

//write the Average GPA and students names getting GPA
//greater than and equal to 3.5
ofile<<"\n\nAverage GPA of all students: "<<average_GPA;
ofile<<"\n\nList of Students who get GPA 3.5 and above:\n\n";
for (int i=0; i<=l; i++){
std::ostringstream ss;
ss<<i+1;

ofile<<ss.str()<<"."<<names[i];
}
//closing the file
ofile.close();

//returning 0 to the main function
return 0;
}