hosting for a friend

DATABASE_CLASS.cpp

#include<iostream.h>
#include<conio.h>
#include<stdlib.h>
#include<stdio.h>
#include<string.h>
#include<ctype.h>

struct date
{
   int dd,mm,yy;
};

struct std_info
{
   char nm[100];
   date dob;
   int age,grade;
   char gender[10];
   char stream[10];
};

struct cls
{
   std_info stud[30];
};

class Student
{
   private:
   void details(cls,int);
   public:
   void display(cls,int);
   void srch(cls,int,char);
   void srch(cls,char,int);
   void edit_rec(cls&,int);
   void add_data(cls&,int&,int);
   void del_data(cls&,int&);
};

void details(cls s,int i)
{
   cout<<"\nName: "<<s.stud[i].nm;
   cout<<"\nGrade: "<<s.stud[i].grade;
   cout<<"\nStream: "<<s.stud[i].stream;
   cout<<"\nAge: "<<s.stud[i].age;
   cout<<"\nDate of Birth:  "<<s.stud[i].dob.mm<<'/'<<s.stud[i].dob.dd<<'/'<<s.stud[i].dob.yy;
   cout<<"\nSex: "<<s.stud[i].gender;
   cout<<endl;
}

void display(cls s,int n)
{
   cout<<"\nS.No.  Name\t\tGrade\tStream\t\tAge\tDOB\t\tSex\n";
   for(int i=0;i<n;i++)
   {
   cout<<(i+1)<<"      "<<s.stud[i].nm<<'\t'<<s.stud[i].grade<<'\t'<<s.stud[i].stream<<"\t\t"<<s.stud[i].age<<'\t'<<s.stud[i].dob.mm<<'/'<<s.stud[i].dob.dd<<'/'<<s.stud[i].dob.yy<<'\t'<<s.stud[i].gender<<endl;
   for(long int j=0;j<800;j+=1){for(long int k=0;k<10000;k++){}}
   }
}

void srch(cls s,int n,char nm_l[])
{
   int f,chk,i;
   char *c,*ch;
   re:cout<<"\nSearch Successful. Details are:";
   for(f=0,i=0;i<n;i++)
   {
       c=strstr(s.stud[i].nm,nm_l);
       chk=memicmp(nm_l,c,strlen(nm_l));
       if(chk==0)
       {
	   for(long int j=0;j<600;j++){for(long int k=0;k<10000;k++){;}}
	   f=1;
	   details(s,i);
       }
   }
   if(f==0)
   {
       cout<<"\rName Search Unsuccessful.\t\n";
       ask:cout<<"\nWould you want to search for another student? ";
       strupr(gets(ch));
       if(stricmp(ch,"Yes")==0)
       {
	   cout<<"\nEnter the students name that you wish to search: ";
	   strupr(gets(nm_l));
	   goto re;
       }
       else
       {
	   delete ch;
	   delete c;
       }
   }
   else goto ask;
}

void srch(cls s,char strm[],int n)
{
   int f=0;
   cout<<"Search Successful. Details are:";
   for(int i=0;i<n;i++)
   {
       int c=strcmp(s.stud[i].stream,strm);
       if(c==0)
       {
	   for(long int j=0;j<800;j++){for(long int k=0;k<10000;k++){;}}
	   f=1;
	   details(s,i);
       }
   }
   if(f==0)
       cout<<"\rStream Search Unsuccessful.\t\n";
}

void edit_rec(cls &s,int n)
{
   char *c;
   char ch[]={"YES"};
   char *nm_l=new char[30];
   int flag,chc;
   edit_new:cout<<"\nPlease enter the name for which data is to be edited: ";
   strupr(gets(nm_l));
   flag=-1;
   for(int i=0;i<n;i++)
   {
       c=strstr(s.stud[i].nm,nm_l);
       if(memicmp(nm_l,c,strlen(nm_l))==0)
       {
	   details(s,i);
	   cout<<"Is this the student for which data has to be edited? ";
	   strupr(gets(ch));
	   if(stricmp(ch,"Yes")==0)
	   {
	       flag=1;
	       cout<<"\nDetails are:-";
	       details(s,i);
	       cout<<"\nWhat do you want to change? ";
	       ch_ag:cout<<"\n1. Name";
	       cout<<"\n2. Grade";
	       cout<<"\n3. Stream";
	       cout<<"\n4. Age";
	       cout<<"\n5. DOB";
	       cout<<"\n6. Sex\n";
	       cout<<"\nChoose one: ";
	       cin>>chc;
	       if(chc==1)
	       {
		   cout<<"\nEnter New Name: ";
		   strupr(gets(s.stud[i].nm));
	       }
	       if(chc==2)
	       {
		   cout<<"\nEnter New Grade: ";
		   cin>>s.stud[i].grade;
	       }
	       if(chc==3)
	       {
		   cout<<"\nEnter New Stream: ";
		   strupr(gets(s.stud[i].stream));
	       }
	       if(chc==4)
	       {
		   cout<<"\nEnter New Age: ";
		   cin>>s.stud[i].age;
	       }
	       if(chc==5)
	       {
		   cout<<"\nEnter New Date of Birth(MM/DD/YYYY): ";
		   cin>>s.stud[i].dob.mm>>s.stud[i].dob.dd>>s.stud[i].dob.yy;
	       }
	       if(chc==6)
	       {
		   cout<<"\nEnter New Sex: ";
		   strupr(gets(s.stud[i].gender));
	       }
	       cout<<"\nThe updated information is:";
	       details(s,i);
	       cout<<"\nDo you want to edit any other information? ";
	       gets(ch);
	       if(stricmp(ch,"Yes")==0)
		   goto ch_ag;
	       cout<<"\nDo you want to edit any other students information? ";
	       gets(ch);
	       if(stricmp(ch,"Yes")==0)
		   goto edit_new;
	       else break;
	   }
	   else if(stricmp(ch,"NO"))
	       continue;
       }
   }
   if(flag==-1) goto rerun;
   rerun:if(flag==-1)
   {
       cout<<"Student not found. Do you want to edit data for another student? ";
       strupr(gets(ch));
       if(stricmp(ch,"Yes")==0)
       {
	   goto edit_new;
       }
   }
}

void add_data(cls &s,int &n,int ch=0)
{
   char *chc;
   int i;
   if(ch==1)
   for(i=0;i<n;i++)
   {
       add:cout<<"\nEnter Details:-";
       cout<<"\nEnter Name: ";
       strupr(gets(s.stud[i].nm));
       cout<<"Enter Grade: ";
       cin>>s.stud[i].grade;
       cout<<"Enter Stream: ";
       strupr(gets(s.stud[i].stream));
       cout<<"Enter Age: ";
       cin>>s.stud[i].age;
       cout<<"Enter Date of Birth(MM/DD/YYYY): ";
       cin>>s.stud[i].dob.mm>>s.stud[i].dob.dd>>s.stud[i].dob.yy;
       cout<<"Enter Sex: ";
       strupr(gets(s.stud[i].gender));
       if(ch==0) break;
   }
   else
   {
       run:n++;
       i=n-1;
       goto add;
   }
   if(ch==0)
   {
       cout<<"\nWould you wish to add any more students? ";
       strupr(gets(chc));
       if(stricmp(chc,"Yes")==0) goto run;
   }
}

void del_data(cls &s,int &n)
{
   char *c,y_n[5];
   char *nm_l=new char[30];
   int flag,i,j,chk,chc;
   cout<<"\nEnter a name for which data has to be deleted: ";
   strupr(gets(nm_l));
   for(i=0;i<n;i++)
   {
       c=strstr(s.stud[i].nm,nm_l);
       chk=memicmp(nm_l,c,strlen(nm_l));
       if(chk==0)
       {
	   details(s,i);
	   cout<<"\nIs this the student for which data has to be deleted? ";
	   gets(y_n);
	   chc=stricmp(y_n,"YES");
	   if(chc==0)
	   {
	       flag=1;
	       for(j=i;j<n;j++)
	       {
		   if(j==(n-1))
		   {
		       n--;
		   }
		   else
		   {
		       strcpy(s.stud[j].nm,s.stud[j+1].nm);
		       s.stud[j].grade=s.stud[j+1].grade;
		       strcpy(s.stud[j].stream,s.stud[j+1].stream);
		       s.stud[j].age=s.stud[j+1].age;
		       s.stud[j].dob.dd=s.stud[j+1].dob.dd;
		       s.stud[j].dob.mm=s.stud[j+1].dob.mm;
		       s.stud[j].dob.yy=s.stud[j+1].dob.yy;
		       strcpy(s.stud[j].gender,s.stud[j+1].gender);
		   }
	       }
	       cout<<"\nDo you want to delete data for any other person? ";
	       strupr(gets(y_n));
	       if(stricmp(y_n,"Yes")==0) goto del_new;
	       else break;
	   }
	   else
	       continue;
       }
   }
   if(flag==-1) goto rerun;
   rerun:if(flag==-1)
   {
       cout<<"\nName not found. Do you want to delete data for some other name?";
       strupr(gets(y_n));
       del_new:if(stricmp(y_n,"Yes")==0)
       {
	   cout<<"\nEnter another name for which data is to be deleted: ";
	   strupr(gets(nm_l));
       }
   }
}

void main()
{
   clrscr();
   cls s;
   char c[]={"YES"};
   int a=0,f=0,n,ch,chc;
   cout<<"Enter number of students: ";
   cin>>n;
   add_data(s,n,chc=1);
   do
   {
       if(f==0)
       {
	   cout<<"\nChoose one:";
	   cout<<"\n1. Display all";
	   cout<<"\n2. Search Name";
	   cout<<"\n3. Search Stream";
	   cout<<"\n4. Edit Records";
	   cout<<"\n5. Add Data of a New Student";
	   cout<<"\n6. Delete Student Data";
	   cout<<"\n7. Exit\n\n";
	   cin>>ch;
       }
       switch(ch)
       {
	   case 1: cout<<"Displaying Information"<<endl;
		   display(s,n);
		   cout<<"\nDo you want to continue? ";
		   gets(c);break;

	   case 2: char nm_l[30];
		   cout<<"\nEnter a Name to be searched for: ";
		   strupr(gets(nm_l));
		   srch(s,n,nm_l);
		   cout<<"\nDo you want to continue? ";
		   gets(c);break;

	   case 3: char strm[10];
		   cout<<"\nEnter Stream to be searched for: ";
		   strupr(gets(strm));
		   srch(s,strm,n);
		   cout<<"\nDo you want to continue? ";
		   gets(c);break;

	   case 4: edit_rec(s,n);
		   cout<<"\nDo you want to continue? ";
		   gets(c);break;

	   case 5: add_data(s,n);
		   cout<<"\nDo you want to continue? ";
		   gets(c);break;

	   case 6: del_data(s,n);
		   cout<<"\nDo you want to continue? ";
		   gets(c);break;

	   case 7: cout<<"\nQuitting...";break;

	   default: cout<<"Please choose again";break;
       }
       a=stricmp(c,"NO");
       if(a==0)
       {
	    cout<<"Quitting...";
	    ch=7;
	    for(a=0;a<1000;a++)
	   {
	       for(f=0;f<10000;f++) {}
	   }
       }
       if(ch==7)
       {
	   for(a=0;a<1000;a++)
	   {
	       for(f=0;f<10000;f++) {}
	   }
	   exit(0);
       }
       f=stricmp(c,"YES");
   }while(f==0);
   getch();
}