account program

#include <iostream>
#include <cstring>
#include <cctype>
#include <string>
#include <cstdlib>
#include <ctime>

using namespace std;

struct Account{
char id[1000];
char firstname[1000];
char middlename[1000];
char lastname[1000];
char username[1000];
char password[1000];
char mobilenumber[1000];
};

//Global
int token = 0;
int index = 0;
Account person[1000];
//Functions
int searchusername();
void signedinmenu();
void signin();
void signup();
void accountmenu();
void magicsquare();
void captcha();

int main(){
accountmenu();
}

int searchusername(){
char searchusername[1000];
cin>>searchusername;
for(int i = 0; i<1000; i++){
    if(strcmp(searchusername, person[i].username) == 0){
    index = i;
    return 0;
            }
        }
    cout<<endl<<"Username not found";
    return 1;

    }

void signedinmenu(){ //Signed Into Account Function
while(true){

system("cls");
int choice;
cout<<endl<<"[1] Show Profile";
cout<<endl<<"[2] Magic Square Minigame";
cout<<endl<<"[3] Back";
cout<<endl<<"Choice: ";
cin>>choice;
switch(choice){
    case 1:
cout<<endl<<"ID: ";
cout<<person[index].id;

cout<<endl<<"First Name: ";
cout<<person[index].firstname;

cout<<endl<<"Middle Name: ";
cout<<person[index].middlename;

cout<<endl<<"Last Name: ";
cout<<person[index].lastname;

cout<<endl<<"Username: ";
cout<<person[index].username;

cout<<endl<<"Password: ";
for(int i = 0; i < strlen(person[index].password); i++){
    cout<<"*";
}
cout<<endl<<"Press enter to continue...";
cin.ignore(1000, '\n');
cin.ignore(1000, '\n');
break;
    case 2:
magicsquare();
break;
    case 3:
return;
        }
    }
}

void signin(){ //Sign into Account Function
string inputpassword;
int loginAttempt = 5;
system("cls");

cout<<endl<<"SIGN-IN";
while(true){
cout<<endl<<"Username: ";
if(searchusername() == 0)
break;

}
while(true){
cout<<endl<<"Password: ";
cin.ignore(1000, '\n');
cin>>inputpassword;
if(inputpassword.compare(person[index].password) == 0)
break;

else
loginAttempt--;

if(loginAttempt==0){
accountmenu();
}
    }
captcha();
cout<<endl<<"Login Successful";
signedinmenu();

}


void signup(){ //Sign-up Function
string cnfrmpassword;
int passreqsmet = 0;

system("cls");
cout<<endl<<"SIGN-UP";
cout<<endl<<"ID: ";
cin.ignore(1000, '\n');
cin>>person[token].id;

cout<<endl<<"First Name: ";
cin.ignore(1000, '\n');
cin>>person[token].firstname;

cout<<endl<<"Middle Name: ";
cin.ignore(1000, '\n');
cin>>person[token].middlename;

cout<<endl<<"Last Name: ";
cin.ignore(1000, '\n');
cin>>person[token].lastname;

person[token].firstname[0] = toupper(person[token].firstname[0]);
person[token].middlename[0] = toupper(person[token].middlename[0]);
person[token].lastname[0] = toupper(person[token].lastname[0]);

strncat(person[token].username, person[token].firstname, 1);
strncat(person[token].username, person[token].middlename, 1);
strcat(person[token].username, person[token].lastname);
cout<<endl<<"Username: ";
cout<<person[token].username;
cin.ignore(1000, '\n');

    while (true) {
        int req1 = 0;
        int req2 = 0;
        int req3 = 0;
        int req4 = 0;
        int req5 = 0;
        person[token].password[0]= '\0';
        cout << endl << "Password must have the following criteria: 1 uppercase, 1 lowercase, 1 digit, 1 special character, and a minimum length of 8.";
        cout << endl << "Password: ";



        cin.getline(person[token].password, sizeof(person[token].password));

        if (strlen(person[token].password) >= 8) {
            req1 = 1;
        }

        for (int i = 0; i < strlen(person[token].password); i++) {
            if (isupper(person[token].password[i])) {
                req2 = 1;
                break;
            }
        }

        for (int i = 0; i < strlen(person[token].password); i++) {
            if (islower(person[token].password[i])) {
                req3 = 1;
                break;
            }
        }

        for (int i = 0; i < strlen(person[token].password); i++) {
            if (isdigit(person[token].password[i])) {
                req4 = 1;
                break;
            }
        }

        for (int i = 0; i < strlen(person[token].password); i++) {
            if (ispunct(person[token].password[i])) {
                req5 = 1;
                break;
            }
        }

        if (req1 == 1 && req2 == 1 && req3 == 1 && req4 == 1 && req5 == 1) {

            break;
        } else {
            cout << "\nPassword does not meet the criteria. Please try again." << endl;
            continue;
        }
}

while(true){
cout<<endl<<"Confirm Password: ";
cin>>cnfrmpassword;
if(cnfrmpassword==person[token].password){
cout << "\nPassword created successfully.";
break;
        }
else{
cout<<endl<<"Incorrect Password";
continue;
        }
    }
while(true){
cout<<endl<<"Mobile No.: ";
cin>>person[token].mobilenumber;
if(strlen(person[token].mobilenumber)!=11){
    cout<<endl<<"Mobile Number must be exactly 11 digits";
    continue;
}
break;
    }
cout<<endl<<"Account created successfully.";
    token++;
}
void accountmenu(){ //Main Menu
int choice;
system("cls");
while(true){
cout<<endl<<"ACCOUNT MENU";
cout<<endl<<"[1] Sign-in";
cout<<endl<<"[2] Sign-up";
cout<<endl<<"[3] Exit";
cout<<endl<<"Choice: ";
cin>>choice;
switch(choice){
    case 1:
        signin();
        continue;
    case 2:
        signup();
        continue;
    case 3:
        return;
        }
    }
}

void magicsquare(){ //Magic Square
    int magicsquare [9];
    cout<<endl;
    cout<<endl<<" Magic Square";
    cout<<endl<<"| 1 | 2 | 3 |";
    cout<<endl<<"| 4 | 5 | 6 |";
    cout<<endl<<"| 7 | 8 | 9 |";
    cout<<endl<<"Enter number from 0 to 9";
    for(int i=0; i<9; i++){
    cout<<endl<<"Enter number for "<<i+1<<": ";
    cin>>magicsquare[i];
    }
    cout<<endl<<" | "<<magicsquare[0]<<" | "<<magicsquare[1]<<" | "<<magicsquare[2]<<" |";
    cout<<endl<<" | "<<magicsquare[3]<<" | "<<magicsquare[4]<<" | "<<magicsquare[5]<<" |";
    cout<<endl<<" | "<<magicsquare[6]<<" | "<<magicsquare[7]<<" | "<<magicsquare[8]<<" |";

    /*
    | 0 | 1 | 2 |
    | 3 | 4 | 5 |
    | 6 | 7 | 8 |
    */

    int sum1, sum2, sum3, sum4, sum5, sum6, sum7, sum8;
    sum1 = magicsquare[0] + magicsquare[1] + magicsquare[2];
    sum2 = magicsquare[3] + magicsquare[4] + magicsquare[5];
    sum3 = magicsquare[6] + magicsquare[7] + magicsquare[8];
    sum4 = magicsquare[0] + magicsquare[4] + magicsquare[8];
    sum5 = magicsquare[6] + magicsquare[4] + magicsquare[2];
    sum6 = magicsquare[2] + magicsquare[5] + magicsquare[8];
    sum7 = magicsquare[1] + magicsquare[4] + magicsquare[7];
    sum8 = magicsquare[0] + magicsquare[3] + magicsquare[6];

    if(sum1 == sum2 && sum2 == sum3 && sum3 == sum4 && sum4 == sum5 && sum5 == sum6 && sum6 == sum7 && sum7 == sum8){
        cout<<endl<<"It is a magic square";
        cout<<endl<<"Press enter to proceed...";
        cin.ignore(1000, '\n');
        cin.ignore(1000, '\n');
        return;
        }
        else
        cout<<endl<<"It is not a magic square";
        cout<<endl<<"Press enter to proceed...";
        cin.ignore(1000, '\n');
        cin.ignore(1000, '\n');
        return;
}

void captcha(){

int attempt=5;
while(true){
const string characters = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
int charactersLength = characters.length();
int captchaLength = 6;
string randomstring;
string usercaptcha;


srand(static_cast<unsigned int>(time(nullptr)));

for(int i= 0; i<captchaLength; i++){
randomstring += characters[rand() % charactersLength];
    }
cout <<endl << "Captcha: " << randomstring << endl;
cout<<endl<<"Enter Captcha: ";
cin>>usercaptcha;

if(usercaptcha==randomstring)
break;

attempt--;

if(attempt==0){
cout<<endl<<"Too many attempts...";
accountmenu();
    }
}

}