Computer Science SBA (Sample)
Posted by JanWan
Last Updated: March 08, 2013
  7626


#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

   
  
 
 
   

 
 
This is a nice c code for starters
 
could i use some of your code??? 0 :)
 
I'm sure john don't u using the code. he strongly believe in open source! :-) JanWan????
 
No problem, this source code is free to anyone who wants to explore c coding. Use this code as a sample to help u practice. Good luck and work hard...
 
I think we need to post more codes on this website, especially in Java...