Dentist-System.c

/**
THIS CODE IS DESIGNED TO RUN ON UNIX SYSTEMS (MAC OR LINUX)
IF YOU ARE USING WINDOWS TO COMPLIE THIS CODE, YOU'LL NEED TO MAKE A COUPLE CANGES.

THESE CHANGES ARE:
1. REPLACE <unistd.h> WITH <time.h>
2. REPLACE <termios.h> WITH <conio.h>
3. REMOVE THE GETCH FUNCTION FROM THE CODE (IT IS INDECATED IN THE CODE AS "GETCH FUNCTION")
4. REPLACE ALL INSTANCES OF sleep() WITH Sleep()
5. IN THE SLEEP FUNCTION, THE DIGIT WHICH INDICATES THE NUMBER OF SECONDS TO PAUSE FOR SHOULD BE IN MILLISECONDS.
   I.E. 1 SECOND = 1000 MILLISECONDS
7. ALL INSTANCES OF "clear" SHOULD BE REPLACED WITH "cls"
8. SEE COMMENTS FOR MORE CHANGES.. (LOGIN FUNCTION)
**/

//--- Header Files ----
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <unistd.h>  /**This library is only for unix users (Mac or Linux) for windows users this library would have to be
                     replaced with the time.h library to use the sleep() function**/

#include <termios.h> /**This library is only for unix users (Mac or Linux) for windows users this library would have to be
                     replaced with the conio.h library to use the getch() function**/
//---------------------

#define MIN -1          //Set minium value in range
#define MAX 1000000     //Set maxium value in range
int count=0;

//--- Declare Structures---
struct patientInfo
{
    int patient_no;
    int treatment_cost;
    char insurance_name[25];
    char address[70];
    char name[80];
    char treatment[50];
}Patient[MAX];                 //Global Structure Array
//------------------------------------------------

//--- Function Proto-types-----
void login();               //Login Function username: Admin password: P@$$w0rd (case sensitive)
int displaymenu();          //Display the menu
void menu();                //Calls the respective function based on the option selected in the menu displayed
void add();                 //Allows the user to add patients into a structure array
/**void search();           //ALlows the user to search for a patients based on patient number
void display(); **/         //Displays all patient detals
//---------------------------------------------------------------------------------------------------

//------------------------- MAIN FUNCTION ------------------------
int main()
{
    int choice;
   // login();                //Calling the login function
    choice=displaymenu();   //Calling the display menu function and storing the return valued the the variable "choice"
    menu(choice);           //Calling the "choice" option function from the menu function
    getch();                //Holds the information on the screen until a key is pressed
    return 0;
}
//--------------------------------------------------------------------------------------------------

void add(){
    char op, answer, insurance;
    int x;
    static int i=MIN; //Static variable 'i' will remember where it stop counting to prevent the data from being overwritten
    i++;
    for(i;i<=MAX;i++){ //MAX value = 1000000
        printf("\n\nEnter data for record #%d\n", i + 1);

        printf("\nEnter Patient Number :");
        scanf("%d", &Patient[i].patient_no);
        fflush(stdin);

        printf("\nEnter Patient Full Name : ");
        scanf(" %[^\n]%*c", Patient[i].name);

        printf("\nEnter the Patient's Address : ");
        scanf(" %[^\n]%*c", Patient[i].address);

        printf("\nEnter the treatment the patient recieved : ");
        scanf(" %[^\n]%*c", Patient[i].treatment);

        printf("\nEnter the cost for treatment : ");
        scanf("%d", &Patient[i].treatment_cost);

        printf("\nDo you have insurance, y or n? ");
        scanf(" %c",&answer);
        answer=tolower(answer);

        if (answer == 'y')
        {
            while(1){
                printf("\nWhich of these insurance to you belong to?\n");
                printf("Select the letter that corresponds with your Insurance\n");
                printf("a. Guardian Life\n");
                printf("b. Victoria Mutual\n");
                printf("c. Life Time Insurance\n");
                printf("> ");
                scanf(" %c",&insurance);
                insurance=tolower(insurance);

                if(insurance=='a'){
                    strcpy(Patient[i].insurance_name, "Guardian Life");
                    Patient[i].treatment_cost = (Patient[i].treatment_cost - (Patient[i].treatment_cost * 0.15));
                    break;

                }else if(insurance=='b'){
                    strcpy(Patient[i].insurance_name, "Victoria Mutual");
                    Patient[i].treatment_cost = (Patient[i].treatment_cost - (Patient[i].treatment_cost * 0.20));
                    break;

                }else if(insurance=='c'){
                    strcpy(Patient[i].insurance_name, "Life Time Insurance");
                    Patient[i].treatment_cost = (Patient[i].treatment_cost - (Patient[i].treatment_cost * 0.16));
                    break;
                }
                else{
                    printf("\a \t \t|    Invaild Option Selection, Try Again    |\n");
                }
            }
            printf("\nThe final cost for treatment is %d", Patient[i].treatment_cost);
        }else{
            strcpy(Patient[i].insurance_name, "NONE");
            printf("\nThe final cost for treatment is %d", Patient[i].treatment_cost);
        }

        printf("\n\n\t     Press 'y' to Add more records or \'n\' to stop\n\n");
        printf("> ");
        scanf(" %c",&op);
        op=tolower(op);
        count++;                                               //Makes users input in "op" lowercased
        if (op=='n')
        {
            printf("\t\t\t   Total Records added: %d\n\n",i+1);        //Displays the total number of records added to the text file
            getchar();
            break;                                                     //Ends loop
        }
    }
    system("clear");        //Clear Screen
    menu(displaymenu());
}

//---------------------- MENU FUNCTION ---------------------------
void menu(int x)                                    //Function accepts an integer value of "choice" from the main function
{
    switch(x)
    {
        case 1:                                     //Executes the following block of code if the integer value x is 1
        {
            system("clear");                        //Clears the screen
            puts("\n \t \t  |=======================================|");
            puts("\t \t  |\t         ADD PATIENT     \t  |");
            puts("\t \t--|=======================================|--");
            add();                              //Add function called to add records Patient structure
            break;                                  //Ends this instance of the program
        }

        case 2:                                     //Executes the following block of code if the integer value x is 2
        {
            system("clear");            //Clears the screen
            int j, number,l;
            l=0;
            puts("\n \t \t  |=======================================|");
            puts("\t \t  |\t       LOOK UP PATIENT    \t  |");
            puts("\t \t--|=======================================|--");

            if(count==0){
                printf("No records Added yet!");
            }
            else{
                printf("Enter Patient Number: ");
                scanf("%d",&number);
                for(j=0;j<count;j++)                                    //Makes sure x is less than the current array posstion
                    {
                        if(Patient[j].patient_no==number)       //Checks structure array if case number entered already exists
                        {
                            printf("\nPatient Number: %d\n", Patient[j].patient_no);
                            printf("Name: %s\n", Patient[j].name);
                            printf("Address: %s\n", Patient[j].address);
                            printf("Treatmet: %s\n", Patient[j].treatment);
                            printf("Insurance Name: %s\n", Patient[j].insurance_name);
                            printf("Treatment Cost: %d\n", Patient[j].treatment_cost);
                            l++;
                        }
                    }
                    if(l==0){
                    printf("No match for patient number %d was found!", number);
                    }
                }

            getchar();
            getchar();
            system("clear");                        //Clear Screen
            menu(displaymenu());
            break;                                  //Ends this instance of the program
        }

        case 3:                                     //Executes the following block of code if the integer value x is 3
        {
            system("clear");        //Clears the screen
            int d;
            puts("\n \t \t  |=======================================|");
            puts("\t \t  |\t       PATIENT DETAILS \t\t  |");
            puts("\t \t--|=======================================|--");
            if(count==0){
                printf("No records Added yet!");
            }
            else{
                for(d=0;d<count;d++){
                    printf("\nPatient Number: %d\n", Patient[d].patient_no);
                    printf("Name: %s\n", Patient[d].name);
                    printf("Address: %s\n", Patient[d].address);
                    printf("Treatmet: %s\n", Patient[d].treatment);
                    printf("Insurance Name: %s\n", Patient[d].insurance_name);
                    printf("Treatment Cost: %d\n", Patient[d].treatment_cost);
                }
            }
            getchar();
            getchar();
            system("clear");
            menu(displaymenu());
            break;                                  //Ends this instance of the program
        }

        case 4:                                     //Executes the following block of code if the integer value x is 4
        {
            printf("\t\t\t\tLogin Out...\n");       //Message to user
            sleep(2);                               //Pause program for 2 seconds
            exit(0);                                //Close program
            break;                                  //Ends this instance of the program
        }
        default:                                    //Executes the following block of code if the integer value x is not any of the instances above
            {
                printf("\a \t \t|    Invaild Option Selection, Try Again    |\n");
                puts("\t \t|-------------------------------------------|");
                sleep(1);                         //Pause program for 1 second
                system("clear");                 //Clears Screen
                menu(displaymenu());            //Calls the menu function using the return value from the displaymenu function as arugment
                break;                         //Ends this instance of the program
            }
    }
}
//-------------------------------------------------------------------------------------

//---------------- DISPLAY MENU FUNCTION -----------------
int displaymenu()
{
    int option;
    puts("\n \t \t  |=======================================|");
    puts("\t \t  | \t           MAIN MENU \t \t  |");
    puts("\t \t--|=======================================|--");
    printf("\t \t|  Select the number that corresponds with  |\n \t \t|\t \t your option.\t \t    |\n");
    puts("\t \t|-------------------------------------------|");
    printf("\t \t|\t  1. Add Patient \t\t    |\n");
    printf("\t \t|\t  2. Look up Patient \t \t    |\n");
    printf("\t \t|\t  3. Display Patient Details\t    |\n");
    printf("\t \t|\t  4. Exit\t \t \t    |\n");
    puts("\t \t|-------------------------------------------|");
    printf("\t \t| Option: ");
    scanf("%d",&option);
    puts("\t \t|-------------------------------------------|");
    return option;  //Returns the number the user chooses and stores it in the "choice" variable in the main function
}
//--------------------------------------------------------------------------------------

//------------------- LOGIN FUNCTION -----------------------------
void login()
{
    int i;                                       //Variable Declaration
    char uid[25],pwd[25],s_uid[25]={"Admin"};    /**Created three variables one for user ID (uid[25]) and one user password
                                                 (pwd[25]). s_uid[25] is the varible holding the user ID the user is suppose to
                                                 enter to get in the system. Anything other that user ID (Admin) will be not
                                                 have access to the system**/

    char s_pwd[25]={"p@$$w0rd"},ch=' ';          /**Created a variable (s_pwd[25]) to hold the password the user is suppose to
                                                 enter to get access to the system. Anything other that user password (p@$$w0rd)
                                                 will be not have access to the system. **/
    puts("\n\n\n\n\n\t\t\t\t    WELCOME");
    puts("\n\t\t    CHAPELTON DENTISTRY REGISTRATION SYSTEM");
    puts("\n\t \t \t |-----------------------------|");
    puts("\t \t \t |             LOGIN           |");
    puts("\t \t \t |-----------------------------|");
    printf(" \t \t \t |Enter the User ID : ");
    scanf("%s",uid);
    getchar();
    printf(" \t \t \t |Enter the Password : ");
    i=0;
    while(1)     //Loops code forever
    {
        ch=getch();
        if(ch==10)           //10 is the ASCII value for the "Enter" key. Windows users would use the value 13 instead.
            break;           //Exit loop
        else if(ch==127)     //127 is the ASCII value for the "backspace" key. Windows users would use the value 8 instead.
        {       if(i!=0)     //This is for avoiding the input from being deleted
            {
                printf("\b");       //'\b' represents blackspace escape character
                printf(" ");
                printf("\b");       //'\b' represents blackspace escape character
                i--;                //Go back to the array position that had the character that was removed by backspace
                pwd[i]='\0';        //End of array
            }
            else
                continue;
        }
        else
        {
            putchar('*');         //Replaces each character type by a *
            pwd[i]=ch;            //Adds the character typed to the pwd array
            i++;                  //Move to the next postion in the array
        }
    }
    puts("\n \t \t \t |-----------------------------|");
    pwd[i]='\0';
    if((strcmp(uid,s_uid))==0 && (strcmp(pwd,s_pwd))==0) //checks if the user input is the same as what was set in the code (Admin, p@$$20rd)
    {
        printf("\t \t \t |\t USER AUTHENTICATED    |");
        puts("\n \t \t \t |-----------------------------|");
        sleep(1); //Pause the program for 1 second. Windows users would have to change this function to Sleep(1000) to get the same result
        system("clear"); //"clear" is for unix users. Windows users whould use "cls" instead of "clear"
    }
    else
    {
        printf("\t \a \t \t |UNABLE TO AUTHENTICATE USER, |\n \t \t \t | \t    Try again\t       |");
        puts("\n \t \t \t |-----------------------------|");
        sleep(2); //Pause the program for 2 second. Windows users would have to change this function to Sleep(2000) to get the same result
        system("clear"); //"clear" is for unix users. Windows users whould use "cls" instead of "clear"
        fflush(stdin);
        login(); //Recall the login function (Recursion)
    }
}
//-----------------------------------------------------------------------------------------

//------------------- GETCH FUNCTION -----------------------------
/**BECAUSE UNIX SYSTEMS DON'T SUPPORT THE CONIO.H LIBRARY THAT CONTAINS IT'S OWN BUILT IN GETCH() FUNCTION
WE HAVE TO MANUALLY BUILD A GETCH FUNCTION SUPPORTED BY THE TERMIOS.H LIBRARY. WINDOWS USERS CAN USE INCLUDE
THE CONIO.H AND REMOVE THIS FUNCTION**/

int getch(void)
{
    struct termios oldattr, newattr;
    int ch;
    tcgetattr( STDIN_FILENO, &oldattr );
    newattr = oldattr;
    newattr.c_lflag &= ~( ICANON | ECHO);//knock down keybuffer
    tcsetattr( STDIN_FILENO, TCSANOW, &newattr );
    system("stty -echo");//shell out to kill echo
    ch = getchar();
    system("stty echo");
    tcsetattr( STDIN_FILENO, TCSANOW, &oldattr );
    return ch;
}
//-----------------------------------------------------------------------------------------