Can you fix my code: #include

#include

#include

#include

using namespace std;

ifstream infile;

struct Student $\{$

string firstName;

string lastName;

string id;

double gpa;

$\}$;

class StudentList $\{$

list students;

public:

void addStudent$($const Student &student$)\{$

students.push$\_$front$($student$)$;

$\}$

void deleteStudent$($const string &id$)\{$

auto it $=$ find$\_$if$($students$.$begin$(),$ students.end$(),[$&$]($const Student &s$)\{$

return s$.$id $==$ id;

$\})$;

if $($it $!=$ students.end$())\{$

students.erase$($it$)$;

cout $<<$ "Student ID: $"<<$ id $<<"$ has been deleted" $<<$ endl;

$\}$ else $\{$

cout $<<$ "Student ID: $"<<$ id $<<"$ not found" $<<$ endl;

$\}$

$\}$

void print$()$ const $\{$

for $($const auto &student : students$)\{$

cout $<<$ student.firstName $<<""<<$ student.lastName $<<""<<$ student.id $<<""<<$ student.gpa $<<$ endl;

$\}$

cout $<<$ endl;

$\}$

Student$*$ findStudent$($const string &id$)\{$

auto it $=$ find$\_$if$($students$.$begin$(),$ students.end$(),[$&$]($const Student &s$)\{$

return s$.$id $==$ id;

$\})$;

if $($it $!=$ students.end$())\{$

return &$(*$it$)$;

$\}$ else $\{$

return nullptr;

$\}$

$\}$

void changeStudent$($const string &id$,$ double newGpa$)\{$

Student $*$student $=$ findStudent$($id$)$;

if $($student$)\{$

student$->$gpa $=$ newGpa;

$\}$ else $\{$

cout $<<$ "Student ID: $"<<$ id $<<"$ not found" $<<$ endl;

$\}$

$\}$

$\}$;

void processAdd$($StudentList &students$)\{$

Student s;

infile $>>$ s$.$firstName $>>$ s$.$lastName $>>$ s$.$id $>>$ s$.$gpa;

students.addStudent$($s$)$;

students.print$()$;

$\}$

void processDelete$($StudentList &students$)\{$

string id;

infile $>>$ id;

students.deleteStudent$($id$)$;

students.print$()$;

$\}$

void processSearch$($const StudentList &students$)\{$

string id;

infile $>>$ id;

Student $*$student $=$ students.findStudent$($id$)$;

if $($student$)\{$

cout $<<$ "Information Located: $"<<$ student$->$firstName $<<""<<$ student$->$lastName $<<""<<$ student$->$id $<<""<<$ student$->$gpa $<<$ endl;

$\}$ else $\{$

cout $<<$ "Information for Student ID: $"<<$ id $<<"$ not found." $<<$ endl;

$\}$

$\}$

void processChange$($StudentList &students$)\{$

string id;

double newGpa;

infile $>>$ id $>>$ newGpa;

students.changeStudent$($id$,$ newGpa$)$;

students.print$()$;

$\}$

int main$()\{$

char code;

StudentList students;

infile.open$("$updates$.$txt$")$;

while $($infile $>>$ code$)\{$

switch $($code$)\{$

case $\text{'}$A$\text{'}$:

case $\text{'}$a$\text{'}$:

processAdd$($students$)$;

break;

case $\text{'}$D$\text{'}$:

case $\text{'}$d$\text{'}$:

processDelete$($students$)$;

break;

case $\text{'}$S$\text{'}$:

case $\text{'}$s$\text{'}$:

processSearch$($students$)$;

break;

case $\text{'}$C$\text{'}$:

case $\text{'}$c$\text{'}$:

processChange$($students$)$;

break;

default:

cout $<<$ "Invalid code $"<<$ code $<<$ endl;

break;

$\}$

$\}$

infile.close$()$;

return $0$;

$\}$