C language Project : Dairy Management System in hindi , write a programme for Dairy Management System in c language

write a programme for Dairy Management System in c language , C language Project : Dairy Management System in hindi  :-

इससे पहले के article मे हमने c language के बहुत ही सरल उदाह्रानो को discuss किया है लेकिन इस article मे c प्रोग्राम मैलिखे डायरी management सिस्टम के source code को discuss करेगे |ये काफी लम्बा source code है लेकिन सरल भी है |
Explanation
इस प्रोजेक्ट मे 7 यूजर define function को use किया गया है |जैसे
int password();- इस function का use पासवर्ड को set करने के लिए किया जाता है |
void add_data();- इस function का use किसी नए  data को add करने के लिए किया जाता है |
void Display_data();-इस function का use किसी exits  data को view करने के लिए किया जाता है|
void modifydata();-इस function का use किसी  exits data को modify करने के लिए किया जाता है |
void changePassword();-इस function का use किसी पासवर्ड को change  करने के लिए किया जाता है |
void deleteRecord();-इस function का use किसी data को delete करने के लिए किया जाता है
void main();- इस function मे यूजर द्वारा input लेकर , उसके corresponds function को call किया जाता है |इसके अलावा एक structure को भी define किया गया है जिसमे date ,time ,palce और user name आदि मेमेब्र्स है | जिसमे डायरी के लिए महत्वपूर्ण data को store किया जाता है |

void main() मे ,
इस function मे यूजर द्वारा choice को input  किया जाता है | जिसे choice मे assign कर दिया जाता है | इस choice variable की value को switch statement मे pass कर दिया जाता है जिससे उस choice के correspond function को call कर दिया जाता है |
अगर यूजर को password को set करना है तब password() को call किया जाता है |
अगर यूजर को data  को add  करना है तब add_data() को call किया जाता है |

void add_data()
इसमें loop चलाया जाता है जिसमे
1.यूजर द्वारा data को input कर लिए जाता है और इसे structure data type के variable मे store करा देते है |
2.अगर यूजर द्वार और भी data को add करना होता है तब ये loop दुबरा चलता है अय्न्था ये terminate हो जाता है |

void Display_data() मे ,
इस function मे file मे स्थित data को देखने के लिए code को लिखा जाता है | लेकिन इसमें दो प्रकार के  view option होते है |
1.पूरा data : इसमें option मे file के सभी data को display किया जाता है |
2.By Time और Date
इस option यूजर द्वारा date और time दोनों input करा लेते है | इसके बाद file मे स्थित data और यूजर द्वारा दिए गये data मे comparsion होता है और date और time मिलने के बाद data को display करा दिया जाता है |

void deleteRecord() ,
इस  function मे delete operation को perform करने के लिए दो तरीके होते है :
1.पूरा data : इसमें option मे file के सभी data को delete किया जाता है |
2.By Time और Date
इस option यूजर द्वारा date और time दोनों input करा लेते है | इसके बाद file मे स्थित data और यूजर द्वारा दिए गये data मे comparsion होता है और date और time मिलने के बाद data को delete करा दिया जाता है |

void modifydata() मे ,
इस function मे , यूजर द्वारा date और time दोनों input करा लेते है | इसके बाद file मे स्थित data और यूजर द्वारा दिए गये data मे comparsion होता है और date और time मिलने के बाद data को modify  करा दिया जाता है |

void changePassword() मे ,
इस function मे , यूजर के द्वारा नए पासवर्ड को input किया जाता है | जिसे old पासवर्ड से replace किया जाता है |

Source Code
#include<stdio.h>
#include<stdlib.h>
#include<conio.h>
#include<string.h>
int password();
void add_data();
void Display_data();
void modifydata();
void changePassword();
void deleteRecord();
struct data
{
char t[6];
char user_name[30];
char user_place[25];
char time_duration[10];
char content[500];
};
void main()
{
char choice;
printf(“Personal Diary System “);
while(1)
{
printf(“\n\n\t\tMAIN MENU:”);
printf(“\n\n\tADD data\t enter ‘A'”);
printf(“\n\tVIEW data\t enter ‘V’ “);
printf(“\n\t Modify data\t enter ‘M'”);
printf(“\n\tDELETE data\t enter ‘D'”);
printf(“\n\tEDIT Password \t enter ‘P’ “);
printf(“\n\tEXIT\t\t enter ‘E’ “);
printf(“\n\n\tENTER YOUR CHOICE:”);
scanf(“%c”,&choice);


switch(choice)


{
case ‘A’:
add_data();
break;
case ‘V’:
Display_data();
break;
case ‘M’:
modifydata();
break;
case ‘D’:
deleteRecord();
break;
case ‘P’:
changePassword();
break;
case ‘E’:
printf(“\n\n\t\tTHANK YOU FOR USING THE SYSTEM “);
getch();
exit(0);
default:
printf(“\n WRONG CHOICE “);
printf(“\nPRESS ANY KEY TO TRY AGAIN”);
getch();
break;
}
system(“cls”);
}
getch();
}
void adddata( )
{
system(“cls”);
FILE *f ;
char control = ‘Y’ ,t[10];
struct data e ;
char file user_name[15];
int choice;
printf(“\t\t* WELCOME TO THE ADD MENU *”);
printf(“\n\n\t Enter date :[yyyy-mm-dd]:”);
fflush(stdin);
gets(fileuser_name);
f = fopen (fileuser_name, “ab+” ) ;
if ( f == NULL )
{
f=fopen(fileuser_name,”wb+”);
if(f==NULL)
{
printf(“Invalid file Location ! Please Check again.”);
printf(“\n Press any key foe exit”);
getch();
return ;
}
}
while ( control == ‘Y’|| control==’y’ )
{
choice=0;
fflush(stdin);
printf ( “\n\tENTER t:[hh:mm]:”);
scanf(“%s”,t);
rewind(f);
while(fread(&e,sizeof(e),1,f)==1)
{
if(strcmp(e.t,t)==0)
{
printf(“\n\t Data already exits .\n”);
choice=1;
}
}
if(choice==0)
{
strcpy(e.t,t);
printf(“\tENTER user_name:”);
fflush(stdin);
gets(e.user_name);
fflush(stdin);
printf(“\tENTER user_place:”);
gets(e.user_place);
fflush(stdin);
printf(“\tENTER time_duration:”);
gets(e.time_duration);
fflush(stdin);
printf(“\tcontent:”);
gets(e.content);
fwrite ( &e, sizeof ( e ), 1, f ) ;
printf(“\n Data added \n”);
}
fflush ( stdin ) ;
control = getchar( ) ;
}
fclose ( f ) ;
printf(“\n\n\t Press Key For Exit Operation .”);
getch();
}
void viewdata( )
{
FILE *f ;
system(“cls”);
struct data customer ;
char t[6],choice,fileuser_name[14];
int ch;
printf(“\t\t* view Menu *”);
choice=password();
if(choice!=0)
{
return ;
}
do
{
printf(“\n\tEnter date on which you want eo show content:[yyyy-mm-dd]:”);
fflush(stdin);
gets(fileuser_name);
f = fopen ( fileuser_name, “rb” ) ;
if ( f == NULL )
{
printf(“Invalid file Location ! Please Check again.”);
printf(“\n Press any key foe exit”);
return ;
}
system(“cls”);
printf(“\n\t Type of Viewing Style :\n”);
printf(“\n\t1. Contenet of whole day.”);
printf(“\n\t2. content of Time “);
printf(“\n\t\t Enter Choice:”);
scanf(“%d”,&ch);
switch(ch)
{
case 1:
printf(“\n Whole Data for File %s:”,fileuser_name);
while ( fread ( &customer, sizeof ( customer ), 1, f ) == 1 )
{
printf(“\n”);
printf(“\nt: %s”,customer.t);
printf(“\n User name : %s”,customer.user_name);
printf(“\n Place : %s”,customer.user_place);
printf(“\n Time: %s”,customer.time_duration);
printf(“\n Content: %s”,customer.content);
printf(“\n”);
}
break;
case 2:
fflush(stdin);
printf(“\n Enter Time:[hh:mm]:”);
gets(t);
while ( fread ( &customer, sizeof ( customer ), 1, f ) == 1 )
{
if(strcmp(customer.t,t)==0)
{
printf(“\n content:”);
printf(“\nt: %s”,customer.t);
printf(“\n User name : %s”,customer.user_name);
printf(“\n Place: %s”,customer.user_place);
printf(“\n Time: %s”,customer.time_duration);
printf(“\ncontent: %s”,customer.content);
}
}
break;
default:
printf(“\n Typed Wrong Information \n”);
break;
}
printf(“\n\n Do you like to view more content(Y/N) :”);
fflush(stdin);
scanf(“%c”,&choice);
}
while(choice==’Y’||choice==’y’);
fclose ( f ) ;
return ;
}
void modifydata()
{
system(“cls”);
FILE *f ;
struct data customer ;
char t[6],choice,fileuser_name[14];
int num,count=0;
printf(“Editing Menu”);
choice=security();
if(choice!=0)
{
return ;
}
do
{
printf(“\n\t Enter date to be modify :[yyyy-mm-dd]:”);
fflush(stdin);
gets(fileuser_name);
printf(“\n\tENTER t:[hh:mm]:”);
gets(t);
f = fopen ( fileuser_name, “rb+” ) ;
if ( f == NULL )
{
printf(“Invalid file Location ! Please Check again.”);
printf(“\n Press any key foe exit”);
return ;
}while ( fread ( &customer, sizeof ( customer ), 1, f ) == 1 )
{
if(strcmp(customer.t,t)==0)
{
printf(“\n Old content :”);
printf(“\nt: %s”,customer.t);
printf(“\n User Name: %s”,customer.user_name);
printf(“\n Place : %s”,customer.user_place);
printf(“\n Time: %s”,customer.time_duration);
printf(“\ncontent: %s”,customer.content);
printf(“\n\n\t\t Content by which modify “);
printf(“\n1.t.”);
printf(“\n2. User name .”);
printf(“\n3.Palce”);
printf(“\n4. Time .”);
printf(“\n5.content.”);
printf(“\n6. Whole content.”);
printf(“\n7.Go back to main menu .”);
do
{
printf(“\n\t Enter Choice :”);
fflush(stdin);
scanf(“%d”,&num);
fflush(stdin);
switch(num)
{
case 1:
printf(“\nEnter New Data :”);
printf(“\nNEW t:[hh:mm]:”);
gets(customer.t);
break;
case 2:
printf(“\nName of Persaon you meet :”);
gets(customer.user_name);
break;
case 3:
]
printf(“\nPalce where you meet that person :”);
gets(customer.user_place);
break;
case 4:
printf(“\nEnter New Data :”);
printf(“\ntime_duration:”);
gets(customer.time_duration);
break;
case 5:
printf(“Enter New Data :”);
printf(“\ncontent:”);
gets(customer.content);
break;
case 6:
printf(“\n Enter New Data :”);
printf(“\nNEW t:[hh:mm]:”);
gets(customer.t);
printf(“\n New meeting Name:”);
gets(customer.user_name);
printf(“\n New meeting place:”);
gets(customer.user_place);
printf(“\ntime_duration:”);
gets(customer.time_duration);
printf(“\ncontent:”);
gets(customer.content);
break;
case 7:
printf(“\nPress Any Key for Go back \n”);
getch();
return ;
break;
default:
printf(“\n Wrong Input \n”);
break;
}
}
while(num<1||num>8);
fseek(f,-sizeof(customer),SEEK_CUR);
fwrite(&customer,sizeof(customer),1,f);
fseek(f,-sizeof(customer),SEEK_CUR);
fread(&customer,sizeof(customer),1,f);
choice=5;
break;
}
}
if(choice==5)
{
system(“cls”);
printf(“\n\t\t Editing Operation Successfully \n”);
printf(“THE NEW data IS:\n”);
printf(“\nt: %s”,customer.t);
printf(“\n Meet Person name : %s”,customer.user_name);
printf(“\nPlace of the Meet : %s”,customer.user_place);
printf(“\ntime_duration: %s”,customer.time_duration);
printf(“\ncontent: %s”,customer.content);
fclose(f);
printf(“\n\n\t do you change data more ?.(Y/N)”);
scanf(“%c”,&choice);
count++;
}
else
{
printf(“Wrong data “);
printf(“Enter Your choice again(Y/N) : “);
scanf(“%c”,&choice);
}
}
while(choice==’Y’||choice==’y’);
fclose ( f ) ;
if(count==1)
printf(“\n%d File Edited \n”,count);
else if(count>1)
printf(“\n%d File already Edited \n”,count);
else
printf(“\n No file edited \n”);
getch();
}
int Password()
{
char pass[15]= {0},check[15]= {0},ch;
FILE *fp;
int i=0,j;
printf(“:: Password Enter ::”);
printf(“::You Have Only Three Trails ::”);
for(j=0; j<3; j++)
{
i=0;
printf(“\n\n Enter  Password:”);
pass[0]=getch();
while(pass[i]!=’\r’)
{
if(pass[i]==’\b’)
{
i–;
printf(“\b”);
printf(” “);
printf(“\b”);
pass[i]=getch();
}
else
{
printf(“*”);
i++;
pass[i]=getch();
}
}
pass[i]=’\0′;
fp=fopen(“SE”,”r”);
if (fp==NULL)
{
printf(“\n File does not exits.\n”);
getch();
return 1;
}
else
i=0;
while(1)
{
ch=fgetc(fp);
if(ch==EOF)
{
check[i]=’\0′;
break;
}
check[i]=ch-5;
i++;
}
if(strcmp(pass,check)==0)
{
printf(“\n\n You Put Right Password . Wait For file Response \n”);
return 0;
}
else
{
printf(“\n\n\t Wrong Password \n”);
printf(“\n Access Denied “);
}
}
printf(“\n\n You Entered Wrong Password”);
printf(“\n\n You are not authorized to Access this file ! Sorry “);
getch();
return 1;
}
void changePassword()
{
system(“cls”);
printf(“\n”);
char pass[15]= {0},confirm[15]= {0},ch;
int choice,i,check;
FILE *f;
f=fopen(“SE”,”rb”);
if(f==NULL)
{
f=fopen(“SE”,”wb”);
if(f==NULL)
{
printf(“Error Occured”);
getch();
return ;
}
fclose(f);
printf(“\nSystem Worked Smoothly Now “);
printf(“\nEnter New Password”);
getch();
}
fclose(f);
check=Password();
if(check==1)
{
return ;
}
do
{
if(check==0)
{
i=0;
choice=0;
printf(“\n\n\tEnter New Password :”);
fflush(stdin);
pass[0]=getch();
while(pass[i]!=’\r’)
{
if(pass[i]==’\b’)
{
i–;
printf(“\b”);
printf(” “);
printf(“\b”);
pass[i]=getch();
}
else
{
printf(“*”);
i++;
pass[i]=getch();
}
}
pass[i]=’\0′;
i=0;
printf(“\n\t Enter Confirm Password :”);
confirm[0]=getch();
while(confirm[i]!=’\r’)
{
if(confirm[i]==’\b’)
{
i–;
printf(“\b”);
printf(” “);
printf(“\b”);
confirm[i]=getch();
}
else
{
printf(“*”);
i++;
confirm[i]=getch();
}
}
confirm[i]=’\0′;
if(strcmp(pass,confirm)==0)
{
f=fopen(“SE”,”wb”);
if(f==NULL)
{
printf(“\n\t\t Error Occurs”);
getch();
return ;
}
i=0;
while(pass[i]!=’\0′)
{
ch=pass[i];
putc(ch+5,f);
i++;
}
putc(EOF,f);
fclose(f);
}
else
{
printf(“\n\t Password Does Not Matched “);
choice=1;
}
}
}
while(choice==1);
printf(“\n\n\t Password Changed Successfully \n\n\t”);
getch();
}
void deleteRecord( )
{
system(“cls”);
FILE *f,*ftr ;
struct data file ;
char fileuser_name[15],control = ‘Y’ ,t[10];;
int choice,check;
printf(“Delete Operation Start “);
check = security();
if(check==1)
{
return ;
}
while ( control == ‘Y’ )
{
printf(“\n\n\t Option For operation .”);
printf(“\n\n\t# Foe Whole data \t\t\t[1]”);
printf(“\n\t# For selected data according to time \t[2]”);
do
{
printf(“\n\t\t Enter Choice:”);
scanf(“%d”,&choice);
switch(choice)
{
case 1:
printf(“\n\t Enter date:[yyyy-mm-dd]:”);
fflush(stdin);
gets(fileuser_name);
f = fopen (fileuser_name, “wb” ) ;
if ( f == NULL )
{
printf(“\n File not exits.”);
getch();
return ;
}
fclose(f);
remove(fileuser_name);
printf(“\n Delete Operation Completed “);
break;
case 2:
printf(“\n\t Enter date:[yyyy-mm-dd]:”);
fflush(stdin);
gets(fileuser_name);
f = fopen (fileuser_name, “rb” ) ;
if ( f == NULL )
{
printf(” File not exits.”);
getch();
return ;
}
ftr=fopen(“temp”,”wb”);
if(ftr==NULL)
{
printf(“Error Occur”);
printf(“\n Press Any Key For Go Back “);
getch();
return ;
}
printf(“\n\t Enter Time :[hh:mm]:”);
fflush(stdin);
gets(t);
while(fread(&file,sizeof(file),1,f)==1)
{
if(strcmp(file.t,t)!=0)
fwrite(&file,sizeof(file),1,ftr);
}
fclose(f);
fclose(ftr);
remove( fileuser_name);
rename(“temp”,fileuser_name);
printf(“\n .”);
break;
default:
printf(“\n\t Wrong Choice”);
break;
}
}
while(choice<1||choice>2);
printf(“\n\t You want to delete .(Y/N):”);
fflush( stdin );
scanf(“%c”,&control);
}
printf(“\n\n\t Please any key for exit “);
getch();
}