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Computer Science SBA (Sample)
Posted by
JanWan
Last Updated:
March 08, 2013
#include<stdio.h>
#include<string.h>
#include<conio.h>
#include<stdlib.h>
#include<time.h>
void create();
void new_member(FILE *);
void existing_member(FILE *);
void exit_program(void);
void welcomescreen(void);
void mainmenu(void);
int GetPassword();
void deletemember(FILE *);
int count = 3;
char password[10];//the password will be contained in here
typedef struct
{
int mem;
char l_name[15];
char f_name[15];
char add_ress[30];
int telephone_number;
char lname[15];
char fname[15];
int telephonenumber;
char address[30];
char plan[10];
int amt_paid;
int balance;
}newmember;
FILE *russian;
void main()
{
int PasswordCorrect;
printf("%s\n",__DATE__);//tells the time
printf("%s\n",__TIME__);//tells the date
welcomescreen();
if(PasswordCorrect == 0)
system("cls");//clears the screen
mainmenu();//contibue the program
}
//********************************************************************************************
void welcomescreen( void )
{
system("color 40");//change the words to and background to
system("cls");//clears the screen
printf("%s\n",__TIME__);//tells the time
printf("%s",__DATE__);//tells the date
printf("\n\n\n\n\t#################################################################");
printf("\n\n\n\t@\t\t\t WELCOME TO\t\t\t\t@");
printf("\n\n\n\t@\t\t\t EGAS DATABASE \t\t\t@");
printf("\n\n\n\t@\t\t MANAGEMENT SYSTEM \t\t@");
printf("\n\n\n\t@\t\t DONE BY: FABIAN GILL \t\t\t@");
printf("\n\n\n\t#################################################################\n\n\t\t\t");
GetPassword();
}
int GetPassword()
{
int count;
char password[20]; /*the correct password for the system*/
for(count=3;count!=-1;count--){//test the amount of time the password is entered
printf("\n\t\t\t\tEnter password:- ");
scanf("%s",&password);//user input
if(strcmp(password,"cybertech")==0){//test if password is correct
system("cls");//clears the screen
mainmenu();//continue the program
}else{//if password is incorrect
printf("\n\t\t\t\t Wrong Password\n");
printf("\n\t\t\tYou have %d more times to enter password\n\n\n\t\t",count);
system("PAUSE");//allows the user to see what is on the screen before the screen is cleared
system("cls");//clears the sreen
}//end of else
}//end of for loop
printf("\n\t\t\tYou have no more tries!\n\n");
getch();//if the tries are over then this is displayed
exit(0);//exits the program
}
//****************************************************************************************
void mainmenu()
{//beginning of option function
int cross;
system("color 04");
printf("\n\t\t\t\t\t*MAIN MENU*\n");
printf("\n\t\t######################################################\n");
printf("\t\t\tPlease select one of the following option:\n\n");
printf("\t\t\tPress 1 to Create New Member.\n");
printf("\t\t\tPress 2 to View Existing Member.\n");
printf("\t\t\tPress 3 to Delete Member File.\n");
printf("\t\t\tPress 4 to log off.\n");
printf("\t\t\tPress 5 to exit program.\n");
printf("\n\t\t######################################################\n");
printf("\nOption:");
scanf("%d",&cross);//user inputs
switch(cross){//beginning of switch statement
case 1: new_member(russian);//if 1 is entered go to new_member function
break;//end of case 1
case 2: existing_member(russian);//if 2 is entered go to existing member function
break;//end of case 2
case 3: deletemember(russian);//if 3 is entered go to deletemember function
break;//end of case 3
case 4:welcomescreen();
break;//end of case 4
case 5:exit (0);//if 5 is entered exit program
break;//endof case 5
default:printf("\t\t\tPlease enter either option 1, 2, 3, 4 or 5\n\n");
system("cls");//clears the screen
mainmenu();//continue program
break;//end of default
}//end of case statement
}//end of option function
//************************************************************************************
void new_member(FILE*russian)
{
newmember gill;
int memnum;
system("color 40");
if((russian=fopen("Database.txt","r+"))==NULL)
printf("File Could not be open\n");
else
system("cls");//clears the screen
printf("\n\n\n\t##############################################################\n\n");
printf("\n\t\tWELCOME TO EGAS DATABASE MANAGEMENT SYSTEM\n\n");
printf("\t##############################################################\n\n");
printf("\t\t\tEnter the Member #: ");
scanf("%d",&memnum);//user inputs
fseek(russian, (memnum - 1) * sizeof (newmember), SEEK_SET);
fread(&gill, sizeof(newmember), 1, russian);
if(gill.mem != 0){//start of if statement to check if member # is not equal to 0
printf(" Member #%d Already contains information.\n",gill.mem);
printf("PRESS ANY KEY TO EXIT!!!\n");
getch();
system("cls");//clears the screen
mainmenu();//continue program
}
else
{
printf("\n\t\t\t Please Enter Last name: ");
scanf("%s",&gill.l_name);//get user input
printf("\n\t\t\t Please Enter First name: ");
scanf("%s",&gill.f_name);//get user input
printf("\n\t\t\t Please Enter Address: ");
scanf("%s",&gill.add_ress);//get user input
printf("\n\t\t\t Please Enter Telephone Number: ");
scanf("%d",&gill.telephone_number);//get user input
printf("\n\t\t\t Spouse Information\n\n");
printf("\n\t\t\t Please Enter Last name: ");
scanf("%s",&gill.lname);//get user input
printf("\n\t\t\t Please Enter First name: ");
scanf("%s",&gill.fname);//get user input
printf("\n\t\t\t Please Enter Address: ");
scanf("%s",&gill.address);//get user input
printf("\n\t\t\t Please Enter Telephone Number: ");
scanf("%d",&gill.telephonenumber);//get user input
printf("\n\t\t\t Please Enter Plan: ");
scanf("%s",&gill.plan);//get user input
printf("\n\t\t\t Please Enter Amount Paid: ");
scanf("%d",&gill.amt_paid);//get user input
printf("\n\t\t\t Please Enter Balance: ");
scanf("%d",&gill.balance);//get user input
gill.mem = memnum;
fseek(russian, (gill.mem -1)* sizeof(newmember),SEEK_SET);
fwrite(&gill, sizeof(newmember), 1, russian);
printf("\n\n\n\t ########################################################\n");
printf("\t THANK YOU FOR USING EGAS DATABASE MANAGEMENT SYSTEM");
printf("\n\t ########################################################\n");
getch();
system("cls");//clears the screen
mainmenu();//continue program
}
}
//******************************************************************************
void existing_member(FILE *russian)
{
int memnum,telephone_number,i,t,l;
int amt_paid;
int balance;
char add_ress[30];
char plan[10];
newmember gill;
if((russian=fopen("Database.txt","r+"))==NULL){
printf("File Could not be open\n");
}else{
system("cls");
printf("Enter Member number : ");
scanf("%d", &memnum);//get user input
fseek(russian,(memnum - 1)* sizeof(newmember),SEEK_SET);
fread(&gill, sizeof(newmember), 1, russian);
if (gill.mem == 0){//start of if statement to check if member # is equal to 0
printf ("Member #%d has no information\n",memnum);
printf("\n\n\n\t ########################################################\n");
printf("\t THANK YOU FOR USING EGAS DATABASE MANAGEMENT SYSTEM");
printf("\n\t ########################################################\n");
getch();
system("cls");
mainmenu();}
else
{
printf("\n%5s%20s%23s%25s","Member#","First Name","Last Name","Telephone#");
printf(" \n\n");
printf("%5d%20s%25s%25d\n\n",gill.mem,gill.f_name,gill.l_name,gill.telephone_number);
printf("\n%5s%20s%23s%25s","Address","Plan","Amount Paid","Balance");
printf(" \n\n");
printf("%5s%20s%25d%25d\n\n",gill.add_ress,gill.plan,gill.amt_paid,gill.balance);
printf("\n\nTo Edit Press 1 or press any key to return to Main Menu: ");
scanf("%d",&t);
if ( t == 1){//start of if statement to check if t is equal to 1
printf("Enter Address: \n");//get user input
scanf("%s",add_ress);//get user input
for (i=0;i<=20;i++)
gill.add_ress[i] = add_ress[i];//replace variable
printf("Enter Telephone #: \n");
scanf("%d",&gill.telephone_number);
gill.telephone_number = telephone_number;//replace variable
printf("Enter Plan: \n");
scanf("%s",gill.plan);
for (l=0;l<=20;l++)
gill.plan[l] = gill.plan[l];
printf("Enter Amount Paid: \n");
scanf("%d",&gill.amt_paid);
gill.amt_paid = gill.amt_paid;
printf("Enter Balance: \n");
scanf("%d",&gill.balance);
gill.balance = gill.balance;
printf("\n%5s%20s%23s%25s","Member#","First Name","Last Name","Telephone#");
printf(" \n\n");
printf("%5d%20s%25s%25d\n\n",gill.mem,gill.f_name,gill.l_name,gill.telephone_number/*,gill.amt_paid,gill.balance*/);
printf("\n%5s%23s%23s%25s","Address","Plan","Amount Paid","Balance");
printf(" \n\n");
printf("%5s%20s%25d%25d\n\n",gill.add_ress,gill.plan,gill.amt_paid,gill.balance);
fseek(russian,(memnum - 1)* sizeof(newmember),SEEK_SET);
fwrite(&gill, sizeof(newmember), 1, russian);
getch();
system("cls");//clears the screen
mainmenu();//continue the program
}else{
printf("\n\n\n\t ##########################################################\n");
printf("\t THANK YOU FOR VIEWING EGAS DATABASE MANAGEMENT SYSTEM");
printf("\n\t ##########################################################\n");
getch();
system("cls");//clears the screen
mainmenu();//continue program
}
}
}
}
//******************************************************************************
void deletemember(FILE *russian)
{
newmember gill,blankgill = {0,"","","",0,"","",0,"","",0,0.0};
int memnum;
int yes;
system("color 4");
if((russian=fopen("Database.txt","r+"))==NULL)
printf("File Could not be open\n");
else
system("cls");//clears the screen
printf("Enter Member Number to delete: ");
scanf("%d",&memnum );//get user input
fseek(russian,(memnum - 1)* sizeof(newmember),SEEK_SET);
fread(&gill, sizeof(newmember), 1, russian);
if (gill.mem == 0)//start of if statement to check if member # is equal to 0
{
printf(" Member # %d does not exist",memnum);
printf("\n\n\n\t ########################################################\n");
printf("\t THANK YOU FOR USING EGAS DATABASE MANAGEMENT SYSTEM");
printf("\n\t ########################################################\n");
getch();
system("cls");//clears the screen
mainmenu();//continue the program
}
else
{
printf("\n%5s%20s%23s%25s","Member#","First Name","Last Name","Telephone#");
printf(" \n\n");
printf("%5d%20s%25s%25d\n\n",gill.mem,gill.f_name,gill.l_name,gill.telephone_number/*,gill.amt_paid,gill.balance*/);
printf("\n%5s%20s%23s%25s","Address","Plan","Amount Paid","Balance");
printf(" \n\n");
printf("%5s%20s%25d%25d\n\n",gill.add_ress,gill.plan,gill.amt_paid,gill.balance);
printf("\n Are you sure ?..\n\n For yes Press 1 :-:\n\n For no press 2 :-:\n");
scanf("%d",&yes);//get user input
if (yes == 1){//start of if statement to check if yes is equal to 1
fseek(russian,(memnum - 1)* sizeof(newmember),SEEK_SET);
fwrite(&blankgill, sizeof(newmember), 1, russian);
system("color 4");
printf("\n\n\t\t Files have been successfully deleted\n\n");
printf("\n\n\n\t ########################################################\n");
printf("\t THANK YOU FOR USING EGAS DATABASE MANAGEMENT SYSTEM");
printf("\n\t ########################################################\n");
getch();
system("cls");//clears the screen
mainmenu();//continue program
}//end of if statement
else
{
printf("\n\n\n\t ########################################################\n");
printf("\t THANK YOU FOR USING EGAS DATABASE MANAGEMENT SYSTEM");
printf("\n\t ########################################################\n");
getch();
system("cls");//clears the screen
mainmenu();//continue program
}//end of else
}
}
J.W.
PRODUCTION
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