part 3 code

               /*Computer Science Internal Assesment
                  David Gardner Grade 13-c
                  Ms. A. Jones
                  Karate Registration System
                  Last Modification Date: 01/03/10 01:39*/

#include <stdio.h>//Standard library files for standard input and output functions
#include <conio.h>/*Common Input and Output functions & Functions for
                            manipulating strings#include <stdio.h>*/
#include <stdlib.h>//other miscellanous standard library functtions
#include <string.h>//standard libraray functions for strings
#define MAX 25//define array length for structures
#define size 90000000//define max number of characters something can store
int i;//global variable used as a counter variable
int numstud;
struct student//structure to hold student non numerical data
{
     char fname[25],midname[25],lname[25],gender[10],bltrank[10];
}stu[MAX];

struct numdata//structure to hold student numerical data
{
       int age,year,id,gen,quu;//gen variable used to hold numerical input for gender[see regmode()
}num[MAX];

void header();//function to create a header in the screen display
void login();//function to request password from user
void menu();//funtion to list the main menu of the program
void regmode();//function used to input data of registering students
void viewmode();//funtion used to view the stored data of the organization
void setup();//function used to set the password and for the I.D. funtion to word
int idnum(int x);//creates an I.D. number for each entry

main(void)//start of the program
{
   header();
   printf("\n\tWelcome to the Jamaica Karate Club Registration System.");
   login();
   system("cls");//function in stdlib.h to clear the screen
   menu();
   getch();
}

void header()
{// "\t" used for tab
    printf("\n\t\t\t||~~~~~~~~~~~~~~~~~~~~~~~~~||\n");
    printf("\t\t\t||~~FUTURE LEADERS EAGLES~~||\n");
    printf("\t\t\t||~~~~KARATE CLUB & GYM~~~~||\n");
    printf("\t\t\t||~~~~~~~~~~~~~~~~~~~~~~~~~||\n");
}

void login()
{
     char pwrd[20],xwrd[20];
     FILE *passcheck;//using a pointer to reference to a file
     passcheck = fopen("syspass","r");//opening the file in READ mode
     if(passcheck==NULL)//Checking if the file is empty
     {
         system("cls");
         menu();
     }
     else//if file contains data do.....
     {
         printf("\nEnter Password: ");
         scanf("%s",&pwrd);
         fscanf(passcheck,"%s",xwrd);//scans data from file into a variable
         int z=3;
         while(strcmp(pwrd,xwrd)!=0)/*strcmp used to cpmare the input data with
                                      the data from the file...while they are not
                                      the same (!=0) do.....*/
         {
              printf("\nIncorrect Password...try again\n");
              scanf("%s",&pwrd);
              z-=1;
              if(z == 0)//password login attempts are used up
              {
                  printf("\nAccess Denied\n");
                  system("pause");
                  exit(0);
              }
         }
         system("cls");
         menu();
     }
     fclose(passcheck);//closing the file
}

void menu()
{
     int q;
     header();
     printf("\n\nMenu Selection Items:");
     printf("\n\t~[1]Register\n\t~[2]View\n\t~[3]Setup\n\t~[4]Exit\n");
     scanf("%d",&q);
     system("cls");
     switch (q)//C function used to choose a specific operation per input
     {
         case 1: printf("\n\t\t\t||Registration Mode||\n\n");
              regmode();//launch regmode
         break;

         case 2: viewmode();//launch viewmode
         break;

         case 3: printf("\n\t\t\t||Setup Mode||\n\n");
              setup();//launch setup
         break;

         case 4: printf("\n\t\t\tTermination Mode\n\n\t\tGoodbye\n\n");
                 system("pause");
                 exit(0);//closes program
         break;

         default: printf("\n\nInvalid Code...Try Again\n\n");
                  system("pause");
         break;//if input is not 1,2,3 or 4....input again
     }
}

void regmode()
{
    int fcnt=0,mcnt=0,save;
    header();
    printf("\n How many students are you registering?\n");
        scanf("%d",&numstud);//user inputs the number of students to register and program loops to that number
    for(i=0;i<numstud;i++)
        {
                system("cls");
        header();
                printf("\n\tStudent # %d\n\n",i+1);
                printf("Enter Name [Format: First Middle Last] \n");
                scanf("%s %s %s",&stu[i].fname,&stu[i].midname,&stu[i].lname);
                printf("\nStudent's Age: ");
                scanf("%d",&num[i].age);
                num[i].quu=3;//assign quu a value...if below conditions are met quu value is decreased
                if(num[i].age>20)
                {
             num[i].quu-=2;
        }
        if(num[i].age<20 && num[i].age>12)
        {
             num[i].quu-=1;
        }
                printf("\nGender Male[1],Female[2] ");
                scanf("%d",&num[i].gen);
                while(num[i].gen>2||num[i].gen<1)//if statement to propmt user to re enter code if number does not match
                {
               printf("\nIncorrect input...try again\n");
               scanf("%d",&num[i].gen);
        }
        if(num[i].gen==1)
        {
               strcpy(stu[i].gender,"Male");/*strcpy allows for a string to be coppied into
                                                     into string variable based on input*/
               mcnt=mcnt + 1;//male count to keep record of number of males registered per session

        }
        if(num[i].gen==2)
        {
               strcpy(stu[i].gender,"Female");
               fcnt= fcnt + 1;//fcnt: female count to keep record of number of female inputs during registration
        }
        printf("\nCurrent Belt Rank: ");
        scanf("%s",&stu[i].bltrank);
        printf("\nYear Training Comenced: ");
        scanf("%d",&num[i].year);
        system("cls");
        header();
        printf("\n\nIdentification: JKC%d\n",idnum(num[i-1].id));
        printf("\nStudent Name: %s, %s %s",stu[i].lname,stu[i].fname,stu[i].midname);
        printf("\nStudent's Age: %d",num[i].age);
                printf("\nQuu: %d",num[i].quu);
                printf("\nGender: %s",stu[i].gender);
                printf("\nBelt Rank: %s",stu[i].bltrank);
                printf("\nYear Training Comenced: %d",num[i].year);
                printf("\n\nSave:[1]\tStart Over[2]");
                scanf("\n%d", &save);
                while(save<1||save>2)
                {
            printf("\nPlease Choose 1 or 2");
            scanf("%d",&save);
        }
        if(save==1)
                {//save the data input to a file
            FILE *ptr;
            ptr=fopen("student_data.txt","a+");
            fprintf(ptr,"Identification: JKC%d\n",idnum(num[i].id));
            fprintf(ptr,"\nName: %s %s %s\n",stu[i].lname, stu[i].fname, stu[i].midname);
            fprintf(ptr,"Age: %d\n",num[i].age);
            fprintf(ptr,"Gender: %s\n",stu[i].gender);
            fprintf(ptr,"Belt Rank: %s\n",stu[i].bltrank);
            fprintf(ptr,"QUU Level: %d\n",num[i].quu);
            fprintf(ptr,"Year Training Commenced: %d\n\n",num[i].year);
            fclose(ptr);
            system("cls");
        }
        else if(save ==2)
        {
            system("pause");
            system("cls");
            regmode();
        }
  }
        printf("\n\nRegistration Complete....For Now =>");
        printf("\nTotal Number Of Males Registered: %d",mcnt);
        printf("\nTotal Number Of Females Registered: %d",fcnt);
        printf("\nThank You & Please Enjoy Your Day\n\n");
        FILE *femct;//file pointer to store number of females in system
        femct=fopen("female.txt","r");
        if(femct==NULL)//if the file is empty, the number will simply be added to it.
        {
             femct=fopen("female.txt","w");
             fprintf(femct,"%d",fcnt);
        }
        else
        {
            int fem;
            femct=fopen("female.txt","r");
            fscanf(femct,"%d",&fem);
            fcnt=fcnt+fem;
            femct=fopen("female.txt","w");
            fprintf(femct,"%d",fcnt);
        }
        fclose(femct);
        FILE *memct;//file pointer to store number of males in system
        memct=fopen("male.txt","r");
        if(memct==NULL)//if the file is empty, the number will simply be added to it.
        {
             memct=fopen("male.txt","w");
             fprintf(memct,"%d",mcnt);
        }
        else
        {
            int mem;
            memct=fopen("male.txt","r");
            fscanf(memct,"%d",&mem);
            mcnt=mcnt+mem;
            memct=fopen("male.txt","w");
            fprintf(memct,"%d",mcnt);
        }
        fclose(memct);
        system("pause");
        system("cls");
        menu();
}

void viewmode()
{
     header();
     int vchoice;
     printf("\n\t\t\t||View Mode Options||\n");
     printf("\n~[1]Full Database\n~[2]Search Student\n~[3]Back To Menu\n");
     scanf("%d",&vchoice);
     system("cls");
     switch(vchoice)
     {
          case 1: printf("\n\t\t\t||Full Database||\n\n");
                  char page[size+1];//enables file characters to be stored due to size constant
                  FILE *vptr;//file pointer to: fptr
                  vptr=fopen("student_data.txt","r");//opens file student_data.txt in different pointer in read only mode
                  if(vptr==NULL)
                  {
                       /*"\a" below listed to make terminal beep...
                       this IF statement is to alert user incase there is no file*/
                       printf("\n\n\a\t\tNo File Listed---->Create File First\n");
                       system("pause");
                       system("cls");
                       header();
                       menu();
                  }
                  while(!feof(vptr))
                  {
                       fgets(page,size,vptr);
                       printf("\t%s",page);
                  }
                  system("pause");
                  system("cls");
                  menu();
         break;

         case 2: printf("\n\nEnter Last Name:\n");
                 printf("\nComing soon");//incomplete function
                 viewmode();
         break;

         case 3: menu();
         break;

         default: printf("\n\nInvalid Code...Try Again\n\n");
                  system("pause");
         break;
     }
}

int idnum(int x)
{
    int idset = 0 ,d;
    FILE *idrun;
    idrun=fopen("id.txt","r");
    fscanf(idrun,"%d",&idset);//scans the number in the id.txt into variable.
    d=idset;
    x = 1040+d;
    idset++;
    idrun=fopen("id.txt","w");
    fprintf(idrun,"%d",idset);
    fclose(idrun);
    return x;
}

void setup()
{
     int select;
     header();
     printf("\n\n~[1]New Password\n~[2]I.D. Setup\n~[3]Back To Menu\n");
     scanf("%d",&select);
     system("cls");
     switch(select)
     {
           case 1:
           header();
           char pword[20],pword2[20];
           printf("\n\nNew Password: ");
           scanf("%s",&pword);
           system("cls");
           printf("\nEnter Password Again ");
           scanf("%s",&pword2);
           if(strcmp(pword,pword2)==0)
           {
                FILE *password;
                password = fopen("syspass","w");
                fprintf(password,"%s",pword);
                fclose(password);
                system("cls");
                printf("\nPassword Accepted\n");
                system("pause");
                system("cls");
                menu();
           }
           else
           {
               printf("Inconsistent Data Entered....try again\n");
               system("pause");
               system("cls");
               setup();
           }
           break;

           case 2:header();//must be the 1st thing done when system is implimented
                printf("\nIdentification Code Setup Function\n");
                int setid;
                FILE *idcheck;
                idcheck=fopen("id.txt","r");
                if(idcheck==NULL)
                {
                    printf("Identification Code Needed\n Press 1 or 0\n");
                    scanf("%d",&setid);
                    idcheck=fopen("id.txt","w");
                    fprintf(idcheck,"%d",setid);
                    fclose(idcheck);
                }
                system("pause");
                menu();
                break;

           case 3: menu();
           break;

           default: printf("\nInvalid Code....Please try Again\n");
           system("pause");
           system("cls");
           setup();
           break;
     }
}