This C++ code defines functions for a student database program that allows users to enter, modify, search, hide, and delete student records. The main functions include passing a login password, displaying a menu, entering new records, modifying and deleting existing records, hiding records, searching for records, and exiting the program. Structures are used to store student name, bio data, and password authentication information.

1. Comsats Institute Of Information And Technology Islamabad Chak Shahzad
Haq Nawaz CH
Sp12-BCS-089

2. Student Data Base program C/C++
Output :

3. C/C++ CODE
#include<iostream>
#include<conio.h>
#include<cstring>
#include<ctype.h>
#include<stdlib.h>
#include<stdio.h>
using namespace std;
void show1();
void pass();
void menu();
void entrec();
void modpass();
void modrec();
void mdf();
void show();
void upd_rec();
void srch();
void exit();
void hid();
void del();
int t=0;
struct name { char first_name[20];
char last_name[20];
};
struct pass
{ char name[20];
char pass[20];
}user;
struct bio_data
{
name ful_name;
char add[100];
int age;
int phon_num;
char gender[10];
};
bio_data p[10];
int i=0;

4. int main()
{
char hid[11];
for (int t=0;t<10;t++)
hid[t]=0;
strcpy(user.name,"ABC");
strcpy(user.pass,"ABC");
pass();
getch();
}
void pass() //defination of password
{ system("cls");
char name[20];
char password[20];
cout<<"Enter user name"<<"t:";
cin>>name;
cout<<"Enter password"<<"t:";
cin>>password;
int c,c1;
int i=0;
char pw;
c=strcmp(name,user.name);
c1=strcmp(password,user.pass);
if(c==0&&c1==0)
{
}
else
system("cls");
cout<<"welcome menue"<<endl;
menu();
getch();
if(c!=0||c1!=0)
{ system("cls");
cout<<"login not match try again";
}
getch();
pass();
// cout<<"modify passw";
}

5. void menu()
{ system("cls");
cout<<"ttt______________________________"<<endl;
cout<<"ttttwelcome to Menu"<<endl;
cout<<"tttt1:Enter Record"<<endl;
cout<<"tttt2:Show Record"<<endl;
cout<<"tttt3:Modify Record"<<endl;
cout<<"tttt4:Hide Record"<<endl;
cout<<"tttt5:Delete Record"<<endl;
cout<<"tttt6:Modify Password"<<endl;
cout<<"tttt7:Search Record"<<endl;
cout<<"tttt8:Exit Menu"<<endl;
cout<<"ttt______________________________"<<endl;
int choice;
cout<<"Enter your choice:t";
cin>>choice;
switch(choice)
{
case 1:
entrec();
break;
case 2:
show();
break;
case 3:
mdf();
break;
case 4:
hid();
break;
case 5:
case 6:
srch();
del();
break;
modpass();
break;
case 7:
break;
case 8:
exit();
}
menu();
break;

6. }
void modpass()
{ system("cls");
cout<<"ttEnter new password"<<endl;
char pw;
int i=0;
cin>>user.pass;
system("cls");
cout<<"ttPassword Cahnged"<<endl;
cout<<"ttPress Enter to Continue"<<endl;
pass();
getch();
}
void entrec()
{ system("cls");
cout<<"enter number of record you want to add"<<endl;
int n;
cin>>n;
for(int i=1;i<=n;i++)
{
cout<<"_______________"<<endl;
cout<<"enter 1st name :t";
cin>>p[i].ful_name.first_name;
cout<<"enter last name:t";
cin>>p[i].ful_name.last_name;
cout<<"address
:t";
cin>>p[i].add;
cout<<"age
:t";
cin>>p[i].age;
cout<<"phon
:t";
cin>>p[i].phon_num;
cout<<"gender
:t";
cin>>p[i].gender;
getch();
}
}
void del()
{ system("cls");
cout<<"enter required out put numbert"<<endl;
int n,a;
cin>>n;

7. a=0;
char lname[20];
cout<<"enter last name to del record"<<endl;
cin>>lname;
for(int i=1;i<=n;i++){
if(strcmp(p[i].ful_name.last_name,lname)==0)
{
cout<<"t----------------------------------"<<endl;
cout<<"tfirst name:t"<<p[i].ful_name.first_name=='0';
cout<<"tlast name :t"<<(p[i].ful_name.last_name)=='0';
cout<<"taddress :t"<<p[i].add=='0';
cout<<"tphone# :t"<<p[i].phon_num=='0';
cout<<"tage
:t"<<p[i].age=='0';
cout<<"tgender :t"<<p[i].gender=='0';
cout<<"t----------------------------------"<<endl;
}a++;
cout<<"showing records:"<<a<<endl;
getch();
}
}
void mdf()
{
system("cls");
int n;
char lname[20];
cout<<"enter last name"<<endl;
cin>>lname;
//cout<<"search upto ....num?"<<endl;
//cin>>n;
for(int i=1;i<=9;i++)
{
if(strcmp(p[i].ful_name.last_name,lname)==0)
{
cout<<"enter 1st name:t";
cin>>p[i].ful_name.first_name;
cout<<"enter last name:t";
cin>>p[i].ful_name.last_name;
cout<<"address:t";
cin>>p[i].add;
cout<<"age:t";
cin>>p[i].age;
cout<<"phon:t";

8. cin>>p[i].phon_num;
cout<<"gender:t";
cin>>p[i].gender;
}
//getch();
} getch();
menu();
}
void show1()
{ system("cls");
for(int i=1;i<=5;i++)
{
cout<<"t----------------------------------"<<endl;
cout<<"tfirst name:tt"<<p[i].ful_name.first_name<<endl;
cout<<"tlast name :tt"<<p[i].ful_name.first_name<<endl;
cout<<"taddress :tt"<<p[i].add<<endl;
cout<<"tage
:tt"<<p[i].phon_num<<endl;
cout<<"tgendr :tt"<<p[i].age<<endl;
cout<<"tphon num :tt"<<p[i].gender<<endl;
cout<<"t----------------------------------"<<endl;
} //break;
getch();
}
void exit()
{
exit(0);
}
void hid()
{
char hide[t];
for (int t=0;t<10;t++)
hide[t]=0;
char nme[20];
char h;
h=0;
cout<<"Please Enter last name to hide:";
cin>>nme;
for (int i=0;i<9;i++)

9. {
if (strcmp(p[i].ful_name.last_name,nme)==0)
{
hide[i]=1;
}
h=1;
}
cout<<"Hidden Successful"<<endl;
if (h==0)
cout<<"Record not Available"<<endl;
getch();
menu();
}
void srch()
{
system("cls");
char hide[10];
for (int t=0;t<10;t++)
hide[t]=0;
char nm[20];
char a;
a=0;
cout<<"nEnter Patient Last Name:";
cin>>nm;
for (int i=0;i<9;i++)
{
if (strcmp(p[i].ful_name.last_name,nm)==0 && hide[i]==0)
{
cout<<"tt------------------------";
cout<<"ntt1 Record match!!!n";
cout<<"nttFirst Name
:";
cout<<p[i].ful_name.first_name;
cout<<"nttPatient Last Name :";
cout<<p[i].ful_name.last_name;
cout<<"nttPatient Phone number:";
cout<<p[i].phon_num;
cout<<"nttPatient Age
:";
cout<<p[i].age;
cout<<"nttPatient gender :";
cout<<p[i].gender<<endl;
cout<<"tt------------------------n";
cout<<"nnn";
a=1;
}

10. }
getch();
menu();}
if (a==0)
cout<<"nRecord not availablen";
void show()
{
system("cls");
char hide[10];
for (int t=0;t<10;t++)
hide[t]=0;
for (int i=0;i<9;i++)
{
if (hide[i]==0&& strlen(p[i].ful_name.last_name)>0)
{
cout<<"nRecord number t :"<<i+1;
cout<<"nPatient First Namet :";
cout<<p[i].ful_name.first_name;
cout<<"nPatient Last Namet :";
cout<<p[i].ful_name.last_name;
cout<<"nPatient Phone numbert:";
cout<<p[i].phon_num;
cout<<"nPatient Address t:";
cout<<p[i].add;
cout<<"nPatient Age
t:";
cout<<p[i].age;
cout<<"nPatient gender t:";
cout<<p[i].gender;
cout<<endl;
}
}getch();
}
/*void del()
{ system("cls");
char name[22];
cout<<"enter 1st name to dell"<<endl;
cin>>name;
int a,b;
for(int i=0;i<=9;i++)
{
a=strcmp(name,p[i].ful_name.first_name);

11. if(a==0)
{
cout<<p[i].ful_name.first_name=='0';
cout<<p[i].ful_name.last_name=='0';
cout<<p[i].add=='0';
cout<<p[i].phon_num=='0';
cout<<p[i].age=='0';
cout<<p[i].gender=='0';
}
}
cout<<"record deleted"<<endl;
getch();
}
*/