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Saving Two Structures in One File

destinedjagold (3)
Intro...
Okay so er, hi to everyone. I'm new to this forums, as you can see.
Anyways, I have partly read the forum rules and it's stated there not to ask for help in assignments.homework programs/projects, but asking for a hint is okay so... yeah...

Story...
Okay so our teacher taught us about how to use structures and how to write/save, open, and close files... But as usual, he gave us simple examples, and gives us complicated quizzes... I am fine with that, 'cause it's for us to brainstorm, but this one's too difficult for me to handle, so can I ask for some hints?

Codes...(No SPOILER tags here? Well, I guess CODE tags will do...)
This is my code named main.cpp...
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#include <iostream.h>
#include <conio.h>
#include <stdio.h>
#include <ctype.h>
#include <string.h>
#include <stdlib.h>
#include <windows.h>
#include "main.h"

void menu();
void close();

int main()
{
    FILE *file;
    int x, yy=0;
    register int i=0;
    register int j=0;
    load();
    a:{             //Main Menu
        menu();
        cin>>x;
    }
    if(x==1){
        amenu(i,yy);
        close();
        goto a;
    }
    else if(x==2){
        emenu(i);
        close();
        goto a;
    }
    else if(x==3){
        //load();
        sdmenu(i,yy);
        close();
        goto a;
    }
    else if(x==4){
        dmenu();
        close();
        goto a;
    }
    else if(x==5){
        close();
        fclose(file);
        exit(0);
    }
    else/* if(x!='1' || x!='2' || x!='3' || x!='4 '|| x!='5')*/{
        cout<<"\n\nInvalid Input!"<<endl;
        getch();
        goto a;
    }

    return 0;
}

void menu(){
    clrscr();
    cout<<"Enrollment System Menu"<<endl;
    cout<<"[1] Add Student Record"<<endl;
    cout<<"[2] Edit Student Record"<<endl;
    cout<<"[3] Search/Display Student Record"<<endl;
    cout<<"[4] Delete Student Record"<<endl;
    cout<<"[5] Exit"<<endl;
    cout<<"\nChoose: ";
}

void close(){
    FILE *file;

    register int i;

    if((file=fopen("Student.dat","wb"))==NULL){
        //printf("cannot open file\n");
        //getche();
        return;
    }
    for(i=0;i<100;i++){
        if(*record[i].id){
            if(fwrite(&record[i],sizeof(struct Record),1,file)!=1){
                printf("file write error\n");
                getche();
            }
        }
    }
    for(i=500; i<1000; i++){
        if(*subject[i].sid){
            if(fwrite(&subject[i],sizeof(struct Subject),1,file)!=1){
                printf("file write error\n");
                getche();
            }
        }
    }
}


Hm... The length of a single post isn't enough for my header code, so I'll post it after this one... I hope double posting is fine here...
destinedjagold (3)
Okay so here's my other code. It's a header file called main.h... This is where I call all the important functions, as what we were instructed...
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struct Record{
    int num;
    char id[10];
    char fname[20];
    char mname[1];
    char sep[2];
    char lname[20];
    char ex[10];
    int age;
    char ylvl[10];
    char course[10];
}record[500];

struct Subject{
    int num;
    char stid[10];
    char sid[10];
    int prelim;
    int midterm;
    int semifinal;
    int final;
    int average;
}subject[1000];

#ifndef _amenu
#define _amenu
amenu(int i, int y){
    FILE *file;
    char x, iden[10];
    char name[20];
    int z=i, p=1;
    int y, input, rec, sub;
    a:{
        clrscr();
        cout<<"Add Student Record"<<endl;
        cout<<"[1] Register"<<endl;
        cout<<"[2] Subject Grade"<<endl;
        cout<<"[3] Return to Main Menu"<<endl;
        cout<<"\nChoose: ";
        cin>>input;
    }
    switch(input){
        case 1:{         //Adding New Student Record
            FILE *file;
            file=fopen("Student.dat","ab");
            clrscr();
            if(yy==1){
                cout<<"Fatal Error Detected!\nPlease Close The Program...";
                getch();
                return yy;

            for(p=1; p<500; p++){
                if(record[p].num==NULL){
                    record[p].num=p;
                    cout<<"Student ID Number: ";
                    gets(name);
                    strcpy(record[p].id,name);

                    cout<<"First Name: ";
                    gets(name);
                    strcpy(record[p].fname,name);

                    cout<<"Middle Name: ";
                    gets(name);
                    strcpy(record[p].sep,"  ");
                    strcpy(record[p].mname,name);

                    cout<<"Last Name: ";
                    gets(name);
                    strcpy(record[p].lname,name);

                    cout<<"Extension Name:\n[0]None, [1]Senior, [2]Junior, [3]III, [4]IV, [5]V\nChoose: ";
                    cin>>x;
                    if(x=='0')
                        strcpy(record[p].ex,"None");
                    else if(x=='1')
                        strcpy(record[p].ex,"Senior");
                    else if(x=='2')
                        strcpy(record[p].ex,"Junior");
                    else if(x=='3')
                        strcpy(record[p].ex,"III");
                    else if(x=='4')
                        strcpy(record[p].ex,"IV");
                    else if(x=='5')
                        strcpy(record[p].ex,"V");
                    else
                        strcpy(record[p].ex,"Invalid");

                    cout<<"Age[15-30]: ";
                    cin>>y;
                    if(y>=31 || y<=14)
                        record[p].age=0;
                    else if(y>=15 || y<=30)
                        record[p].age=y;

                    cout<<"Year Level:\n[1]1st Year, [2]2nd Year, [3]3rd Year, [4]4th Year\nChoose: ";
                    cin>>x;
                    if(x=='1')
                        strcpy(record[p].ylvl,"1st Year");
                    else if(x=='2')
                        strcpy(record[p].ylvl,"2nd Year");
                    else if(x=='3')
                        strcpy(record[p].ylvl,"3rd Year");
                    else if(x=='4')
                        strcpy(record[p].ylvl,"4th Year");
                    else
                        strcpy(record[p].ylvl,"???");

                    cout<<"Course:\n[1]BSCS, [2]BSIT, [3]BSBA\nChoose: ";
                    cin>>x;
                    if(x=='1')
                        strcpy(record[p].course,"BSCS");
                    else if(x=='2')
                        strcpy(record[p].course,"BSIT");
                    else if(x=='3')
                        strcpy(record[p].course,"BSBA");
                    else
                        strcpy(record[p].course,"???");

                    cout<<"\nPress Any Key To Go Back...";
                    fclose(file);
                    getch();
                    goto a;
                }
            }
        }
        case 2:{         //Adding New Subject Record
            b:{
                //j=i+1;
                FILE *file;
                file=fopen("Student.dat","rb");
                clrscr();
                cout<<"Search Student I.D.: ";
                cin>>iden;
            }
            for(int k=0; k<=500; k++){
                if(!strcmp(record[k].id,iden)){
                FILE *file;
                file=fopen("Student.dat","ab");
                    for(p=500; p<1000; p++){
                        if(subject[p].num==NULL){
                            subject[p].num=p;

                            cout<<"Found!"<<endl;
                            strcpy(subject[p].stid,iden);

                            cout<<"Subject I.D.: ";
                            cin>>subject[p].sid;

                            cout<<"Prelim Grade: ";
                            cin>>subject[p].prelim;

                            cout<<"MidTerm Grade: ";
                            cin>>subject[p].midterm;

                            cout<<"PreFinal Grade: ";
                            cin>>subject[p].semifinal;

                            cout<<"Final Grade: ";
                            cin>>subject[p].final;

                            cout<<"Computation of Average Final is ";
                            //formula in computing the final grade
                            subject[p].average=(subject[p].prelim+subject[p].midterm+subject[p].semifinal+subject[p].final)/4;

                            cout<<subject[p].average<<endl;
                            cout<<"\nPress Any Key To Go Back...";

                            getch();
                            goto a;
                        }
                    }
                }
            }
            cout<<"Not Found!"<<endl;
            cout<<"\nSearch Again[y/n]?: ";
            cin>>x;
            if(x=='y'){
                goto b;
            }
            else if(x=='n'){
                fclose(file);
                goto a;
            }
        }
        case 3:{
            return i;
        }
        default:{
            cout<<"\nInvalid Input";
            getch();
            amenu(i,j);
        }
    }
    return i,j;
}
#endif

#ifndef _emenu
#define _emenu
int emenu(int i){
    code deleted to fit in post length...
}
#endif

#ifndef _dmenu
#define _dmenu

void dmenu(){
    clrscr();
    cout<<"Delete Student Record"<<endl;
    cout<<"[1] Registration"<<endl;
    cout<<"[2] Subject Grade"<<endl;
    cout<<"[3] Return to Main Menu"<<endl;
    cout<<"\nChoose: ";
}
#endif

#ifndef _load
#define _load

void load(){
  FILE *file;

  register int i;

  if((file=fopen("Student.dat","rb"))==NULL){
    //printf("Cannot Open File\n");
    //getche();
    return;
  }

  /*register int t;

  for(t=0; t<500; t++)
  {
    *record[t].id ='\0';
  }*/

    for(i=0;i<1500;i++){
        if(fread(&record[i],sizeof(struct Record),1,file)!=1){
            if(feof(file)){
                    fclose(file);
                    return;
                }
                printf("File read error\n");
            }
        if(fread(&subject[i],sizeof(struct Subject),1,file)!=1){
            if(feof(file)){
                fclose(file);
                return;
            }
            printf("File read error\n");
        }
    }
}
#endif


The header code isn't finished yet but here's the problem...

Problems...
1. In the Search Function, searching for student records are okay, but when I search for their subject records, I can't display them, nor are they found by the program, but they're saved in the file already... =/
2. ...I guess that's my only problem... Editing and deleting are easy to do.

Thanks~
destinedjagold (3)
and the continuation... =/
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#ifndef _sdmenu
#define _sdmenu

int sdmenu(int i){
    FILE *file;
    file=fopen("Student.dat","rb");
    int x, p=1;
    char iden[10], siden[10], y;
    char sid[10];
    a:{
        clrscr();
        cout<<"Search Student I.D. Number: ";
        scanf("%s", &iden);
    }
    for(int z=0; z<=500; z++){
        if(!strcmp(record[z].id,iden)){
            file=fopen("Student.dat","rb");
            cout<<"Found!\n\nCurrent Record..."<<endl;
            textcolor(YELLOW);
            cout<<"First Name: ";
            cprintf("%s", record[z].fname);
            cout<<"\nMiddle Name: ";
            cprintf("%s", record[z].mname);
            cout<<"\nLast Name: ";
            cprintf("%s", record[z].lname);
            cout<<"\nExtension Name: ";
            cprintf("%s", record[z].ex);
            cout<<"\nAge: ";
            cprintf("%d", record[z].age);
            cout<<"\nYear Level: ";
            cprintf("%s", record[z].ylvl);
            cout<<"\nCourse: ";
            cprintf("%s", record[z].course);

            cout<<"\n\nSearch Subject Code: ";
            scanf("%s", &siden);

            for(p=499; p<=1000; p++){
                //FILE *file;
                //file=fopen("Student.dat","rb");
                if(subject[p].num==NULL){
                    //cout<<p<<" = NULL , ";
                }else{
                    if(!strcmp(subject[p].sid,siden)){
                        //if(!strcmp(subject[p].stid,iden)){
                            //file=fopen("Student.dat","rb");
                            cout<<"\nPrelim Grade: "<<subject[p].prelim<<"\nMidTerm Grade: "<<subject[p].midterm;
                            cout<<"\nPreFinal Grade: "<<subject[p].semifinal<<"\nFinal Grade: "<<subject[p].final;
                            cout<<"\nAverage: "<<subject[p].average;
                            getch();
                            /* I need a */break;
                            goto qu;
                        //}
                    }
                }
                //break;
            }
            break;
            goto qu;
        }
    }
    cout<<"\nNot Found!";
    //cout<<"Not Found!"<<endl;
    qu:{
        cout<<"\nSearch Again[y/n]?: ";
        cin>>y;
        if(y=='y'){
            goto a;
        }
        else if(y=='n'){
            //fclose(file);
            return i;
        }
    }

}
#endif
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