In this exercise we have to use the knowledge of the JAVA language to write the code, so we have to:
The code is in the attached photo.
So to make it easier the code can be found at:
using namespace std;
// Class student required to store the data
class Student{
public:
string lname;
string fname;
int marks[3];
char grade;
// Function which generates the grade for student
void calculate_grade(){
double sum = 0;
for(int i=0;i<3;i++){
sum+= marks[i];
}
double average = sum/3;
if(average>=90 && average<100)
this->grade = 'A';
else if(average>=80)
this->grade = 'B';
else if(average>=70)
this->grade = 'C';
else if(average>=60)
this->grade= 'D';
else this->grade = 'F';
}
};
// This function reads the file , and creates a vector of Students data
vector read_file(string fileName){
// Opening the file
fstream fin;
fin.open(fileName);
// Temp variables
vector list;
vector row ;
string line, word, temp;
// Read the data into vector
while(getline(fin,line)){
row.clear();
stringstream s(line);
while(getline(s,word,'\t')){
row.push_back(word);
}
Student st;
st.fname = row[0];
st.lname = row[1];
st.marks[0] = stoi(row[2]);
st.marks[1] = stoi(row[3]);
st.marks[2] = stoi(row[4]);
st.calculate_grade();
list.push_back(st);
}
fin.close();
return list;
}
// This function takes filname to be output as input, and list of student
void writeFile(string filename, vector list){
// Opening the new file
ofstream fin(filename);
for(int i=0;i string line = list[i].fname+"\t"+list[i].lname+"\t"+to_string(list[i].marks[0])+"\t"
+to_string(list[i].marks[1])+"\t"+to_string(list[i].marks[2])+"\t"+list[i].grade+"\n";
fin<
}
// Find the stats required
double average1 =0,average2 =0 ,average3 = 0;
for(int i=0;i average1+=list[i].marks[0];
average2+=list[i].marks[1];
average3+=list[i].marks[2];
}
average1/=list.size();
average2/=list.size();
average3/=list.size();
// Writting the stats
fin<<"\n"<<"Average: "<<"mid_term1 "<
// Closing the file
fin.close();
}
int main(){
// Taking the input
cout<<"Enter the filename: ";
string filename;
cin>>filename;
vector list;
// Reading and Writting to the file
list = read_file(filename);
writeFile("report.txt",list);
}
See more about JAVA at brainly.com/question/2266606
