void output_student(Student &stud){
//put the output code here
}
//....
int main(){
//loop each of your students here, one loop for reading in the data, the other one for outputting the data
}

	// 1st subject
		inFile >> code[i];
		inFile >> cu[i];
		inFile >> pf[i];
		//subject2
		inFile >> codel[i];
		inFile >> cul[i];
		inFile >> pfl[i];
		//subject3
		inFile >> codell[i];
		inFile >> cull[i];
		inFile >> pfll[i];
		//subject4
		inFile >> codelll[i];
		inFile >> culll[i];
		inFile >> pflll[i];

Student::Subjects::setVar();

Student::subjects::students[4]

Student student;
for(int subject = 0; subject < 4; subject++){
    string code;
    int cu;
    char pass_or_fail;
    inFile >> code;
    inFile >> cu;
    inFile >> pass_or_fail;
 
    //subject == loop variable
    subjects[subject].setCode(code);
    subjects[subject].setCU(cu);
    subjects[subject].setPF(pass_or_fail);
}

 
 i = 0;
 k = 0;
	while( (ch = inFile.peek()) != EOF)
	{
	k = i;	
	inFile >> name;
	students[k].setName(name);
	for(k = 0; k < 4; k++){
    inFile >> code;
    inFile >> cu;
    inFile >> pf;
 
    //subject == loop variable
    students[k].setSCode(code,k);
    students[k].setSCU(cu,k);
    students[k].setSpf(pf,k);
	}