diary.c

#include<stdio.h>

#include<stdlib.h>

#include<conio.h>

#include<string.h>

int password();

void addrecord();

void viewrecord();

void editrecord();

void editpassword();

void deleterecord();

struct record

{

    char time[6];

    char name[30];

    char place[25];

    char duration[10];

    char note[500];

} ;

int main()

{

    int ch;

    printf("\n\n\t***********************************\n");

    printf("\t*PASSWORD PROTECTED PERSONAL DIARY*\n");

    printf("\t***********************************");

    while(1)

    {

        printf("\n\n\t\tMAIN MENU:");

        printf("\n\n\tADD RECORD\t[1]");

        printf("\n\tVIEW RECORD\t[2]");

        printf("\n\tEDIT RECORD\t[3]");

        printf("\n\tDELETE RECORD\t[4]");

        printf("\n\tEDIT PASSWORD\t[5]");

        printf("\n\tEXIT\t\t[6]");

        printf("\n\n\tENTER YOUR CHOICE:");

        scanf("%d",&ch);

        switch(ch)

        {

        case 1:

            addrecord();

            break;

        case 2:

            viewrecord();

            break;

        case 3:

            editrecord();

            break;

        case 4:

            deleterecord();

            break;

        case 5:

            editpassword();

            break;

        case 6:

            printf("\n\n\t\tTHANK YOU FOR USING THE SOFTWARE ");

            getch();

            exit(0);

        default:

            printf("\nYOU ENTERED WRONG CHOICE..");

            printf("\nPRESS ANY KEY TO TRY AGAIN");

            getch();

            break;

        }

        system("cls");

    }

    return 0;

}

void addrecord( )

{

    system("cls");

    FILE *fp ;

    char another = 'Y' ,time[10];

    struct record e ;

    char filename[15];

    int choice;

    printf("\n\n\t\t***************************\n");

    printf("\t\t* WELCOME TO THE ADD MENU *");

    printf("\n\t\t***************************\n\n");

    printf("\n\n\tENTER DATE OF YOUR RECORD:[yyyy-mm-dd]:");

    fflush(stdin);

    gets(filename);

    fp = fopen (filename, "ab+" ) ;

    if ( fp == NULL )

    {

        fp=fopen(filename,"wb+");

        if(fp==NULL)

        {

            printf("\nSYSTEM ERROR...");

            printf("\nPRESS ANY KEY TO EXIT");

            getch();

            return ;

        }

    }

    while ( another == 'Y'|| another=='y' )

    {

        choice=0;

        fflush(stdin);

        printf ( "\n\tENTER TIME:[hh:mm]:");

        scanf("%s",time);

        rewind(fp);

        while(fread(&e,sizeof(e),1,fp)==1)

        {

            if(strcmp(e.time,time)==0)

            {

                printf("\n\tTHE RECORD ALREADY EXISTS.\n");

                choice=1;

            }

        }

        if(choice==0)

        {

            strcpy(e.time,time);

            printf("\tENTER NAME:");

            fflush(stdin);

            gets(e.name);

            fflush(stdin);

            printf("\tENTER PLACE:");

            gets(e.place);

            fflush(stdin);

            printf("\tENTER DURATION:");

            gets(e.duration);

            fflush(stdin);

            printf("\tNOTE:");

            gets(e.note);

            fwrite ( &e, sizeof ( e ), 1, fp ) ;

            printf("\nYOUR RECORD IS ADDED...\n");

        }

        printf ( "\n\tADD ANOTHER RECORD...(Y/N) " ) ;

        fflush ( stdin ) ;

        another = getchar( ) ;

    }

    fclose ( fp ) ;

    printf("\n\n\tPRESS ANY KEY TO EXIT...");

    getch();

}

void viewrecord( )

{

    FILE *fpte ;

    system("cls");

    struct record customer ;

    char time[6],choice,filename[14];

    int ch;

    printf("\n\n\t\t*******************************\n");

    printf("\t\t* HERE IS THE VIEWING MENU *");

    printf("\n\t\t*******************************\n\n");

    choice=password();

    if(choice!=0)

    {

        return ;

    }

    do

    {

        printf("\n\tENTER THE DATE OF RECORD TO BE VIEWED:[yyyy-mm-dd]:");

        fflush(stdin);

        gets(filename);

        fpte = fopen ( filename, "rb" ) ;

        if ( fpte == NULL )

        {

            puts ( "\nTHE RECORD DOES NOT EXIST...\n" ) ;

            printf("PRESS ANY KEY TO EXIT...");

            getch();

            return ;

        }

        system("cls");

        printf("\n\tHOW WOULD YOU LIKE TO VIEW:\n");

        printf("\n\t1.WHOLE RECORD OF THE DAY.");

        printf("\n\t2.RECORD OF FIX TIME.");

        printf("\n\t\tENTER YOUR CHOICE:");

        scanf("%d",&ch);

        switch(ch)

        {

        case 1:

            printf("\nTHE WHOLE RECORD FOR %s IS:",filename);

            while ( fread ( &customer, sizeof ( customer ), 1, fpte ) == 1 )

            {

                printf("\n");

                printf("\nTIME: %s",customer.time);

                printf("\nMEETING WITH: %s",customer.name);

                printf("\nMEETING AT: %s",customer.place);

                printf("\nDURATION: %s",customer.duration);

                printf("\nNOTE: %s",customer.note);

                printf("\n");

            }

            break;

        case 2:

            fflush(stdin);

            printf("\nENTER TIME:[hh:mm]:");

            gets(time);

            while ( fread ( &customer, sizeof ( customer ), 1, fpte ) == 1 )

            {

                if(strcmp(customer.time,time)==0)

                {

                    printf("\nYOUR RECORD IS:");

                    printf("\nTIME: %s",customer.time);

                    printf("\nMEETING WITH: %s",customer.name);

                    printf("\nMEETING AT: %s",customer.place);

                    printf("\nDUARATION: %s",customer.duration);

                    printf("\nNOTE: %s",customer.note);

                }

            }

            break;

        default:
            printf("\nYOU TYPED SOMETHING ELSE...\n");

            break;

        }

        printf("\n\nWOULD YOU LIKE TO CONTINUE VIEWING...(Y/N):");

        fflush(stdin);

        scanf("%c",&choice);

    }
    while(choice=='Y'||choice=='y');

    fclose ( fpte ) ;

    return ;

}

void editrecord()

{

    system("cls");

    FILE *fpte ;

    struct record customer ;

    char time[6],choice,filename[14];

    int num,count=0;

    printf("\n\n\t\t*******************************\n");

    printf("\t\t* WELCOME TO THE EDITING MENU *");

    printf("\n\t\t*******************************\n\n");

    choice=password();

    if(choice!=0)

    {

        return ;

    }

    do

    {

        printf("\n\tENTER THE DATE OF RECORD TO BE EDITED:[yyyy-mm-dd]:");

        fflush(stdin);

        gets(filename);

        printf("\n\tENTER TIME:[hh:mm]:");

        gets(time);

        fpte = fopen ( filename, "rb+" ) ;

        if ( fpte == NULL )

        {

            printf( "\nRECORD DOES NOT EXISTS:" ) ;

            printf("\nPRESS ANY KEY TO GO BACK");

            getch();

            return;

        }

        while ( fread ( &customer, sizeof ( customer ), 1, fpte ) == 1 )

        {

            if(strcmp(customer.time,time)==0)

            {

                printf("\nYOUR OLD RECORD WAS AS:");

                printf("\nTIME: %s",customer.time);

                printf("\nMEETING WITH: %s",customer.name);

                printf("\nMEETING AT: %s",customer.place);

                printf("\nDURATION: %s",customer.duration);

                printf("\nNOTE: %s",customer.note);

                printf("\n\n\t\tWHAT WOULD YOU LIKE TO EDIT..");

                printf("\n1.TIME.");

                printf("\n2.MEETING PERSON.");

                printf("\n3.MEETING PLACE.");

                printf("\n4.DURATION.");

                printf("\n5.NOTE.");

                printf("\n6.WHOLE RECORD.");

                printf("\n7.GO BACK TO MAIN MENU.");

                do

                {

                    printf("\n\tENTER YOUR CHOICE:");

                    fflush(stdin);

                    scanf("%d",&num);

                    fflush(stdin);

                    switch(num)

                    {

                    case 1:
                        printf("\nENTER THE NEW DATA:");

                        printf("\nNEW TIME:[hh:mm]:");

                        gets(customer.time);

                        break;

                    case 2:
                        printf("\nENTER THE NEW DATA:");

                        printf("\nNEW MEETING PERSON:");

                        gets(customer.name);

                        break;

                    case 3:
                        printf("\nENTER THE NEW DATA:");

                        printf("\nNEW MEETING PLACE:");

                        gets(customer.place);

                        break;

                    case 4:
                        printf("\nENTER THE NEW DATA:");

                        printf("\nDURATION:");

                        gets(customer.duration);

                        break;

                    case 5:
                        printf("ENTER THE NEW DATA:");

                        printf("\nNOTE:");

                        gets(customer.note);

                        break;

                    case 6:
                        printf("\nENTER THE NEW DATA:");

                        printf("\nNEW TIME:[hh:mm]:");

                        gets(customer.time);

                        printf("\nNEW MEETING PERSON:");

                        gets(customer.name);

                        printf("\nNEW MEETING PLACE:");

                        gets(customer.place);

                        printf("\nDURATION:");

                        gets(customer.duration);

                        printf("\nNOTE:");

                        gets(customer.note);

                        break;

                    case 7:
                        printf("\nPRESS ANY KEY TO GO BACK...\n");

                        getch();

                        return ;

                        break;

                    default:
                        printf("\nYOU TYPED SOMETHING ELSE...TRY AGAIN\n");

                        break;

                    }

                }
                while(num<1||num>8);

                fseek(fpte,-sizeof(customer),SEEK_CUR);

                fwrite(&customer,sizeof(customer),1,fpte);

                fseek(fpte,-sizeof(customer),SEEK_CUR);

                fread(&customer,sizeof(customer),1,fpte);

                choice=5;

                break;

            }

        }

        if(choice==5)

        {

            system("cls");

            printf("\n\t\tEDITING COMPLETED...\n");

            printf("--------------------\n");

            printf("THE NEW RECORD IS:\n");

            printf("--------------------\n");

            printf("\nTIME: %s",customer.time);

            printf("\nMEETING WITH: %s",customer.name);

            printf("\nMEETING AT: %s",customer.place);

            printf("\nDURATION: %s",customer.duration);

            printf("\nNOTE: %s",customer.note);

            fclose(fpte);

            printf("\n\n\tWOULD YOU LIKE TO EDIT ANOTHER RECORD.(Y/N)");

            scanf("%c",&choice);

            count++;

        }

        else

        {

            printf("\nTHE RECORD DOES NOT EXIST::\n");

            printf("\nWOULD YOU LIKE TO TRY AGAIN...(Y/N)");

            scanf("%c",&choice);

        }

    }
    while(choice=='Y'||choice=='y');

    fclose ( fpte ) ;

    if(count==1)

        printf("\n%d FILE IS EDITED...\n",count);

    else if(count>1)

        printf("\n%d FILES ARE EDITED..\n",count);

    else

        printf("\nNO FILES EDITED...\n");

    printf("\tPRESS ENTER TO EXIT EDITING MENU.");

    getch();

}

int password()

{

    char pass[15]= {0},check[15]= {0},ch;

    FILE *fpp;

    int i=0,j;

    printf("::FOR SECURITY PURPOSE::");

    printf("::ONLY THREE TRIALS ARE ALLOWED::");

    for(j=0; j<3; j++)

    {

        i=0;

        printf("\n\n\tENTER THE 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';

        fpp=fopen("SE","r");

        if (fpp==NULL)

        {

            printf("\nERROR WITH THE SYSTEM FILE...[FILE MISSING]\n");

            getch();

            return 1;

        }

        else

            i=0;

        while(1)

        {

            ch=fgetc(fpp);

            if(ch==EOF)

            {

                check[i]='\0';

                break;

            }

            check[i]=ch-5;

            i++;

        }

        if(strcmp(pass,check)==0)

        {

            printf("\n\n\tACCESS GRANTED...\n");

            return 0;

        }

        else

        {

            printf("\n\n\tWRONG PASSWORD..\n\n\tACCESS DENIED...\n");

        }

    }

    printf("\n\n\t::YOU ENTERED WRONG PASSWORD::YOU ARE NOT ALLOWED TO ACCESS ANY FILE::\n\n\tPRESS ANY KEY TO GO BACK...");

    getch();

    return 1;

}

void editpassword()

{

    system("cls");

    printf("\n");

    char pass[15]= {0},confirm[15]= {0},ch;

    int choice,i,check;

    FILE *fp;

    fp=fopen("SE","rb");

    if(fp==NULL)

    {

        fp=fopen("SE","wb");

        if(fp==NULL)

        {

            printf("SYSTEM ERROR...");

            getch();

            return ;

        }

        fclose(fp);

        printf("\nSYSTEM RESTORED...\nYOUR PASSWORD IS 'ENTER'\n PRESS ENTER TO CHANGE PASSWORD\n\n");

        getch();

    }

    fclose(fp);

    check=password();

    if(check==1)

    {

        return ;

    }

    do

    {

        if(check==0)

        {

            i=0;

            choice=0;

            printf("\n\n\tENTER THE 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\tCONFIRM 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)

            {

                fp=fopen("SE","wb");

                if(fp==NULL)

                {

                    printf("\n\t\tSYSTEM ERROR");

                    getch();

                    return ;

                }

                i=0;

                while(pass[i]!='\0')

                {

                    ch=pass[i];

                    putc(ch+5,fp);

                    i++;

                }

                putc(EOF,fp);

                fclose(fp);

            }

            else

            {

                printf("\n\tTHE NEW PASSWORD DOES NOT MATCH.");

                choice=1;

            }

        }

    }
    while(choice==1);

    printf("\n\n\tPASSWORD CHANGED...\n\n\tPRESS ANY KEY TO GO BACK...");

    getch();

}

void deleterecord( )

{

    system("cls");

    FILE *fp,*fptr ;

    struct record file ;

    char filename[15],another = 'Y' ,time[10];;

    int choice,check;

    printf("\n\n\t\t*************************\n");

    printf("\t\t* WELCOME TO DELETE MENU*");

    printf("\n\t\t*************************\n\n");

    check = password();

    if(check==1)

    {

        return ;

    }

    while ( another == 'Y' )

    {

        printf("\n\n\tHOW WOULD YOU LIKE TO DELETE.");

        printf("\n\n\t#DELETE WHOLE RECORD\t\t\t[1]");

        printf("\n\t#DELETE A PARTICULAR RECORD BY TIME\t[2]");

        do

        {

            printf("\n\t\tENTER YOU CHOICE:");

            scanf("%d",&choice);

            switch(choice)

            {

            case 1:

                printf("\n\tENTER THE DATE OF RECORD TO BE DELETED:[yyyy-mm-dd]:");

                fflush(stdin);

                gets(filename);

                fp = fopen (filename, "wb" ) ;

                if ( fp == NULL )

                {

                    printf("\nTHE FILE DOES NOT EXISTS");

                    printf("\nPRESS ANY KEY TO GO BACK.");

                    getch();

                    return ;

                }

                fclose(fp);

                remove(filename);

                printf("\nDELETED SUCCESFULLY...");

                break;

            case 2:

                printf("\n\tENTER THE DATE OF RECORD:[yyyy-mm-dd]:");

                fflush(stdin);

                gets(filename);

                fp = fopen (filename, "rb" ) ;

                if ( fp == NULL )

                {

                    printf("\nTHE FILE DOES NOT EXISTS");

                    printf("\nPRESS ANY KEY TO GO BACK.");

                    getch();

                    return ;

                }

                fptr=fopen("temp","wb");

                if(fptr==NULL)

                {

                    printf("\nSYSTEM ERROR");

                    printf("\nPRESS ANY KEY TO GO BACK");

                    getch();

                    return ;

                }

                printf("\n\tENTER THE TIME OF RECORD TO BE DELETED:[hh:mm]:");

                fflush(stdin);

                gets(time);

                while(fread(&file,sizeof(file),1,fp)==1)

                {

                    if(strcmp(file.time,time)!=0)

                        fwrite(&file,sizeof(file),1,fptr);

                }

                fclose(fp);

                fclose(fptr);

                remove(filename);

                rename("temp",filename);

                printf("\nDELETED SUCCESFULLY...");

                break;

            default:

                printf("\n\tYOU ENTERED WRONG CHOICE");

                break;

            }

        }
        while(choice<1||choice>2);

        printf("\n\tDO YOU LIKE TO DELETE ANOTHER RECORD.(Y/N):");

        fflush(stdin);

        scanf("%c",&another);

    }

    printf("\n\n\tPRESS ANY KEY TO EXIT...");

    getch();

}