#include"stdafx.h"
#include<stdio.h>
#include<conio.h>
#include <string.h>
#include<stdlib.h> //conversion
#include<ctype.h>
#include <io.h>
#include<time.h>
#define password "skm"
using namespace std ;
//user -define data-type
typedef struct {
int StuID;
int age;
char name[30];
char add[30];
char gender[10];
char status[10];
char cno[10];
char date[12];
} stu_rec;
typedef enum{false,true}boolean;
typedef struct link{
stu_rec data;
struct link*next;
}node;
typedef struct{
node*Node;
}list;
//prototypes
int menu();
void AddEntry(list*,stu_rec);
void DeletEntry(list*, int);
void DisplayEntry(node*);
void SearchID(list*,int);
int isEmpty(node*);
stu_rec getRecord(list *);
void init(list*);
void process(int,list*);
void read_file(list*);
void write_file(list*);
void ModifyEntry (list *mylist, int);
void displayRec(node*current);
int getID();
void pass();
char cur_date[9];
char cur_time[9];
void main()
{
clrscr();
int choice;
list mylist;
init(&mylist);
pass();
read_file(&mylist);
do{
choice=menu();
process(choice,&mylist);
}while(choice!=6);
write_file(&mylist);
gotoxy(13,2); printf("DATE: %s\n",cur_date);
gotoxy(53,2); printf("TIME: %s\n",cur_time);
}
void pass()
{
printf("\n\n\t\t\t SCHOOL OF COMPUTING & TECHNOLOGY.");
printf("\n\t\t\t *********************************");
printf("\n\t\t\t *********************************");
int valid,retry=1;
char pass[10];
_strdate(cur_date);
_strtime(cur_time);
do
{
gotoxy(32,14); printf("Enter The Password: ");
gets(pass);
if(strcmp(pass,password)!=0)
{
clrscr();
gotoxy(30,16); printf("Incorrect Password!");
valid=0;
retry+=1;
}
else
valid=1;
}while(!valid&&retry<=3);
if(retry>3)
{
gotoxy(28,16); printf("Maximum 3 try only! Bye!");
getch(); exit(0);
}
else
{
clrscr();
gotoxy(32,16); printf("Access approved!");
getch();
}
}
void init(list*mylist){
mylist->Node=NULL;
}
void process(int choice,list *mylist){
clrscr();
stu_rec num;
int ID;
switch(choice){
case 1:num=getRecord(mylist);
AddEntry(mylist,num);
printf("\n Record Inserted!");
break;
case 2: ID = getID();
DeletEntry(mylist,ID);
break;
case 3:DisplayEntry(mylist->Node);
break;
case 4: ID = getID();
ModifyEntry(mylist, ID);
break;
case 5: ID=getID();
SearchID(mylist,ID);
break;
case 6: clrscr();
printf("\n\n\t\t\t*******T H A N K Y O U !!******");
printf("\n\t\t\t**********");
printf("\n\t\t\t*******The End******");
break;
default:printf("\INVALID CHOICE!!! PLEASE ENTER AGAIN!");
}
getch();
}
int menu(){
clrscr();
int temp;
gotoxy(13,2); printf("DATE: %s\n",cur_date);
gotoxy(53,2); printf("TIME: %s\n",cur_time);
printf("\n\t\t**********************************************");
printf("\n\t\t* STUDENT REGISTRATION PROGRAM *");
printf("\n\t\t**********************************************");
printf("\n");
printf("\n\t\t\t[1]Add New Student Record ");
printf("\n\t\t\t[2]Delete Student Record ");
printf("\n\t\t\t[3]Display Student Record ");
printf("\n\t\t\t[4]Modify Student Record ");
printf("\n\t\t\t[5]Search Student Record ");
printf("\n\t\t\t[6]Exit The Program ");
printf("\n\n\t\t\tPlease Enter Your Choice: ");
fflush(stdin);
scanf("%d", &temp);
return temp;
}
boolean IsDuplicate(int temp, list *mylist){
node* curr = mylist->Node;
while(curr!= NULL){
if (curr->data.StuID == temp){
printf("\n\t<<StudentID Number already in use !>>");
printf("\n");
return true;
}
curr= curr->next;
}
return false;
}
int getCode(char *str, list *mylist){
char temp[20];
boolean OK;
do{
OK = true;
printf("%s",str);
fflush(stdin);
gets(temp);
if (strlen(temp)!=4){
printf("\t\t<< Student ID should not be Empty or It should \n\t\t only 4 digits >>\n");
OK= false;
}
for(int count=0; temp[count]!='\0'; count++)
if (!isdigit(temp[count])){
printf("\t\t<< Must be digits! >>\n");
OK = false;
break;
}
}while(!OK || IsDuplicate(atoi(temp), mylist));
return atoi(temp);
}
char *getString(char * str){
char *temp = (char *)malloc(sizeof(80));
printf("%s", str);
fflush(stdin);
gets(temp);
return temp;
}
char *getString(char * str, int size, int status){
char *temp = (char *)malloc(sizeof(80));
boolean OK;
do{
OK = true;
printf("%s", str);
fflush(stdin);
gets(temp);
if (strlen(temp)>size){
printf("\t\t<< Contact No should not be Empty or \n\t\t It should not exceed %d characters! >>\n", size);
OK = false;
}
if (status == 1 && strlen(temp)< 4){
printf("\t\t<< Name should not be Empty or \n\t\t It should not less than 4 characters.>>\n");
OK = false;
for(int count=0; temp[count]!='\0'; count++)
if (!isalpha(temp[count])){
printf("\t\t<< Student Name Must be characters! >>\n");
OK = false;
break;
}
}
if (status == 2)
if (strlen(temp) < 8){
printf("\t\t<<Contact No should not be Empty or \n\t\tIt should not less than 8 characters>>\n");
OK = false;
}else
for(int count=0; temp[count]!='\0'; count++)
if (!isdigit(temp[count])){
printf("\t\t<< Contact No Must be numeric!>>\n");
OK = false;
break;
}
if (status == 0 && (temp[0]!='m'&& temp[0]!='f' )){
printf("\t\t<< Gender should not be Empty or \n\t\t It should be only M or F >>\n");
OK = false;
}
}while(!OK);
return temp;
}
char * getDate(){
boolean OK;
char * temp = (char *)malloc(12);
do{
OK = true;
printf("\t Student D.O.B [DD/MM/YYYY]:");
fflush(stdin);
gets(temp);
if (strlen(temp)!=10){
printf("\t\t<< Student D.O.B should not be Empty or \n\t\t It should Must be 10 characters >>\n");
OK = false;
}else
if (!isdigit(temp[0]) || !isdigit(temp[1]) || !isdigit(temp[3]) || !isdigit(temp[4])
|| !isdigit(temp[6])|| !isdigit(temp[7]) || !isdigit(temp[8]) || !isdigit(temp[9])
|| temp[2]!='/' || temp[5]!='/'){
printf("\t\t<< Student D.O.B Format must be dd/mm/yyyy >>\n");
OK = false;
} else
if (temp[0] < '0' || temp[0] >'3'){
printf("\t\t<< Invalid day >>\n ");
OK = false ;
}else
if (temp[3] < '0' || temp[3] > '1' || temp[4] < '0' || temp[4] > '2') {
printf("\t\t<< Invalid month >> \n");
OK = false ;
}else
if (temp[6] < '1' || temp[6] >'2'){
printf("\t\t<< Invalid year >>\n ");
OK = false ;
}
}while(!OK);
return temp;
}
stu_rec getRecord(list *mylist){
stu_rec temp;
clrscr();
printf("\n\t\t******************************************");
printf("\n\t\t*********ADD NEW STUDENT RECORD***********");
printf("\n\t\t******************************************");
printf("\n");
temp.StuID=getCode("\t Student ID: ",mylist);
strcpy(temp.name,getString("\t Student Name:", 30,1));
do{
strcpy(temp.add,getString("\t Student address:"));
if(strlen(temp.add)<10)
printf("\t\t<< Address should not be Empty or \n\t\tIt should not less than 10 characters >>\n");
}while(strlen(temp.add)<10);
strcpy(temp.gender,getString("\t Student Gender [F or M]:",1,0));
do{
printf("\t Student Age:");
scanf("%d",&temp.age);
if((temp.age)<3)
printf("\t <<Student age should not be Empty or \n\t\tIt should not more than 2 character>>\n");
}while((temp.age)<3);
strcpy(temp.cno,getString("\t Student Contact No:",10,2));
do{
strcpy(temp.status,getString("\t Marital Status:"));
if(strlen(temp.status)>10)
printf("\t\t<<Marital Status should not be Empty or \n\t\tIt should not exceed 10 characters>>\n");
}while(strlen(temp.status)>10);
strcpy(temp.date,getDate());
printf("\n\tPlease Press any key to continue!!");
getch();
clrscr();
return temp;
}
int isEmpty(node* thelist){
if(thelist == NULL)
return 1;
else
return 0;
}
void AddEntry(list*mylist, stu_rec x){
node*newPtr=(node*)malloc(sizeof(node));
node*prev=mylist->Node;
newPtr->data=x;
newPtr->next=NULL;
if (isEmpty(mylist->Node))
mylist->Node=newPtr;
else
if (mylist->Node->data.StuID > newPtr->data.StuID){
newPtr->next = mylist->Node;
mylist->Node = newPtr;
}else {
while((prev->next!=NULL) &&(prev->next->data.StuID <x.StuID))
prev=prev->next;
newPtr->next=prev->next;
prev->next=newPtr;
}
}
int getID(){
int x;
printf("\nPlease Enter Student ID: ");
scanf("%d", &x);
return x;
}
void DeletEntry(list*mylist, int x){
node*prev = mylist->Node;
node*target;
if(!isEmpty(mylist->Node))
if(mylist->Node->data.StuID == x){
displayRec(mylist->Node);
printf("\nDelete this Record [Y] >> ");
if (toupper(getche()) == 'Y'){
mylist->Node = mylist->Node->next;
free(prev);
printf("\n Record Deleted!");
getch();
}
}
else{
target = mylist->Node;
while((target!=NULL)&&(target->data.StuID !=x)){
prev = target;
target=target->next;
}
if((target!=NULL) && (target->data.StuID==x)){
displayRec(target);
printf("\nDelete this Record [Y] >> ");
if (toupper(getche()) == 'Y'){
prev->next= target->next;
printf("\n Record Deleted!");
getch();
free(target);
getch();
}
}
else
printf("\n Record Does Not Exist!");
printf("\n Please Press Any Key to Cotinue!!");
getch();
}
}
void DisplayEntry(node*thelist){
node*current=thelist;
if(isEmpty(thelist)){
printf("\nNo values insert by the user yet!!");
getch();
}else
clrscr();
printf("\n\t\t*************************************************");
printf("\n\t\t *********DISPLAY STUDENT RECORD****************");
printf("\n\t\t*************************************************");
printf("\n");
while(current!=NULL){
clrscr();
displayRec(current);
current=current->next;
}
}
void displayRec(node*current){
if (current->data.StuID!=0){
printf("\n\tStudent ID :%d",current->data.StuID);
printf("\n\tName :%s",current->data.name);
printf("\n\tAddress :%s",current->data.add);
printf("\n\tGender :%s",current->data.gender);
printf("\n\tStatus :%s",current->data.status);
printf("\n\tAge :%d",current->data.age);
printf("\n\tContact Number :%s",current->data.cno);
printf("\n\tStudent D.O.B :%s ",current->data.date);
printf("\n\n\t Press any key to continue!!");
getch();
current=current->next;
}
}
node * update(node * curr){
printf("\nChange Address [Y] >> ");
if (toupper(getche())== 'Y'){
fflush(stdin);
printf("\nEnter new Address >> ");
gets(curr->data.add);
}
printf("\nChange contact No >>[Y] ");
if (toupper(getche())== 'Y'){
printf("\nEnter new contact No >> ");
gets(curr->data.cno);
}
return curr;
}
void ModifyEntry(list *mylist, int ID){
node *curr = mylist->Node;
while(curr!=NULL){
if(curr->data.StuID==ID){
clrscr();
printf("\n\t\t*************************************************");
printf("\n\t\t**********R E C O R D F O U N D!!*************");
printf("\n\t\t*************************************************");
printf("\n");
displayRec(curr);
curr = update(curr);
return;
}
curr = curr->next;
}
printf("Record does not exist!");
}
void SearchID(list*mylist, int x)
{
node*curr=mylist->Node;
while(curr!=NULL)
{
if(curr->data.StuID==x)
{
clrscr();
printf("\n\t\t*************************************************");
printf("\n\t\t**********R E C O R D F O U N D!!*************");
printf("\n\t\t*************************************************");
printf("\n");
displayRec(curr),
getch();
break;
}
curr=curr->next;
}
if(curr==NULL){
printf("\n\t Sorry Record Does Not Exist!!");
printf("\n\t Please PRESS any key to continue!!");
getch();
clrscr();
}
}
void write_file(list*mylist){
clrscr();
FILE *fp;
stu_rec temp;
node* curr = mylist->Node;
if ((fp=fopen("c:\data.dat", "wb"))==NULL)
printf("\aError opening File! ");
else{
//printf("\nRecords Written to file from list!!");
while (curr!=NULL){
temp = curr->data;
fwrite((void *) &temp,sizeof(stu_rec),1,fp);
curr=curr->next;
}
fclose(fp);
}
}
void read_file(list*mylist){
clrscr();
FILE *fp;
node *curr;
node * prev =NULL;
stu_rec temp;
if ((fp=fopen("c\:Data.dat", "rb"))==NULL)
printf("\aError opening File! ");
else{
//printf("\nRecords Written from binary file to list!");
while (!feof(fp)){
fread((void *)&temp,sizeof(stu_rec),1,fp);
AddEntry(mylist, temp);
}
curr = mylist->Node;
while (curr->next!=NULL){
prev = curr;
curr=curr->next;
}
if (prev!=NULL) prev->next = curr->next;
// DeletEntry(mylist,temp.StuID);
fclose(fp);
}
}
