#include <fstream>
#include <iostream>
#include <stdio.h>
#include <string.h>
using
namespace
std;
int
main()
{
char
data[15];
int
n = 0, option = 0, count_n = 0;
string empty =
"00"
;
string proctor =
""
;
ifstream f(
"Example.txt"
);
string line;
for
(
int
i = 0; std::getline(f, line); ++i) {
count_n++;
}
while
(option != 6) {
cout <<
"\nAvailable operations: \n1. Add New "
"Students\n2."
<<
"Student Login\n3. Faculty Login\n4. "
"Proctor Login\n5. Admin View\n"
<<
"6. Exit\nEnter option: "
;
cin >> option;
if
(option == 1) {
cout <<
"Enter the number of students: "
;
cin >> n;
count_n = count_n + n;
for
(
int
i = 0; i < n; i++) {
ofstream outfile;
outfile.open(
"Example.txt"
, ios::app);
cout <<
"Enter your registration number: "
;
cin >> data;
outfile << data <<
"\t"
;
cout <<
"Enter your name: "
;
cin >> data;
int
len =
strlen
(data);
while
(len < 15) {
data[len] =
' '
;
len = len + 1;
}
outfile << data <<
"\t"
;
outfile << empty <<
"\t"
;
outfile << empty <<
"\t"
;
cout <<
"Enter your proctor ID: "
;
cin >> proctor;
outfile << proctor << endl;
}
}
else
if
(option == 2) {
char
regno[9];
cout <<
"Enter your registration number: "
;
cin >> regno;
ifstream infile;
int
check = 0;
infile.open(
"Example.txt"
, ios::in);
while
(infile >> data) {
if
(
strcmp
(data, regno) == 0) {
cout
<<
"\nRegistration Number: "
<< data
<< endl;
infile >> data;
cout <<
"Name: "
<< data << endl;
infile >> data;
cout <<
"CSE1001 mark: "
<< data
<< endl;
infile >> data;
cout <<
"CSE1002 mark: "
<< data
<< endl;
infile >> data;
cout <<
"Proctor ID: "
<< data << endl;
infile.close();
check = 1;
}
}
if
(check == 0) {
cout <<
"No such registration number found!"
<< endl;
}
}
else
if
(option == 3) {
char
subcode[7];
cout <<
"Enter your subject code: "
;
cin >> subcode;
string code1 =
"CSE1001"
, code2 =
"CSE1002"
,
mark =
""
;
ifstream infile;
int
check = 0;
cout <<
"\nAvailable operations: \n1. Add data "
"about marks\n"
<<
"2. View data\nEnter option: "
;
cin >> option;
if
(option == 1) {
cout
<<
"Warning! You would need to add mark"
<<
"details for all the students!"
<< endl;
for
(
int
i = 0; i < count_n; i++) {
fstream file(
"Example.txt"
);
if
(
strcmp
(subcode, code1.c_str())
== 0) {
file.seekp(26 + 37 * i,
std::ios_base::beg);
cout <<
"Enter the mark of student#"
<< (i + 1) <<
" : "
;
cin >> mark;
file.write(mark.c_str(), 2);
}
if
(
strcmp
(subcode, code2.c_str())
== 0) {
file.seekp(29 + 37 * i,
std::ios_base::beg);
cout <<
"Enter the mark of student#"
<< (i + 1) <<
" : "
;
cin >> mark;
file.write(mark.c_str(), 2);
}
}
}
else
if
(option == 2) {
infile.open(
"Example.txt"
, ios::in);
if
(
strcmp
(subcode, code1.c_str()) == 0) {
cout <<
"Registration number - Marks\n"
<< endl;
while
(infile >> data) {
cout << data;
infile >> data;
infile >> data;
cout <<
" - "
<< data << endl;
infile >> data;
infile >> data;
check = 1;
}
}
infile.close();
infile.open(
"Example.txt"
, ios::in);
if
(
strcmp
(subcode, code2.c_str()) == 0) {
cout <<
"Registration number - Marks\n"
<< endl;
while
(infile >> data) {
cout << data;
infile >> data;
infile >> data;
infile >> data;
cout <<
" - "
<< data << endl;
infile >> data;
check = 1;
}
}
}
infile.close();
if
(check == 0) {
cout <<
"No such subject code found!"
<< endl;
}
}
else
if
(option == 4) {
char
procid[7];
cout <<
"Enter your proctor ID: "
;
cin >> procid;
int
check = 0;
char
temp1[100], temp2[100], temp3[100];
char
temp4[100], id[100];
ifstream infile;
infile.open(
"Example.txt"
, ios::in);
while
(infile >> temp1) {
infile >> temp2;
infile >> temp3;
infile >> temp4;
infile >> id;
if
(
strcmp
(id, procid) == 0) {
cout <<
"\nRegistration Number: "
<< temp1 << endl;
cout <<
"Name: "
<< temp2 << endl;
cout <<
"CSE1001 Mark: "
<< temp3
<< endl;
cout <<
"CSE1002 Mark: "
<< temp4
<< endl;
check = 1;
}
}
if
(check == 0) {
cout <<
"No such proctor ID found!"
<< endl;
}
}
else
if
(option == 5) {
char
password[25];
cout <<
"Enter the admin password: "
;
cin >> password;
string admin_pass =
"admin"
;
if
(
strcmp
(password, admin_pass.c_str()) == 0) {
cout <<
"Reg No. "
"\tName\tCSE1001\tCSE1002\tProctor "
"ID"
<< endl;
ifstream infile;
infile.open(
"Example.txt"
, ios::in);
char
data[20];
while
(infile >> data) {
cout << data <<
"\t"
;
infile >> data;
cout << data <<
"\t"
;
infile >> data;
cout << data <<
"\t"
;
infile >> data;
cout << data <<
"\t"
;
infile >> data;
cout << data << endl;
}
}
}
}
}