Management and Billing System Project in C

Dear student, here we Learn about the Customer Billing Management system program in C through a Programming Project. Like Customer Billing, Restaurant Billing system using Secure Process like User Login and Password Interface in Management and Billing System Project in C.

C programming projects

#include<stdio.h>
#include<string.h>
#include<stdlib.h>
#include<windows.h>
#include<ctype.h>
#include<time.h>
welcome_board ()
{
time_t t;
time(&t);
int i;
char str[]=”WHERE CUSTOMERS MATTERS”;
printf(“\n\t\t\t\xdb\xdb\xdb\xdb\xdb\xdb\xdb\xdb\xdb\xdb\xdb\xdb\xdb\xdb\xdb CUSTOMER BILL PORTAL \xdb\xdb\xdb\xdb\xdb\xdb\xdb\xdb\xdb\xdb\xdb\xdb\xdb\xdb\xdb”);
printf(“\n\n\n\t\t\t\t\t”);
for(i=0;i<strlen(str);i++)
{
printf(“%c”, str[i]);
Sleep(150);
}
printf(“\n\t\t\t\t————-WECLOME CUSTOMER————-“);
printf(“\n\t\t\t\t\t%s”,ctime(&t));//printing time by calling time function//
getch();//holds the screen}user_exit()
{
system(“cls”);
printf(“\n\t\t\t\xdb\xdb\xdb\xdb\xdb\xdb\xdb\xdb\xdb\xdb\xdb\xdb\xdb\xdb\xdb HAVE A GOOD DAY DEAR CUSTOMER!  \xdb\xdb\xdb\xdb\xdb\xdb\xdb\xdb\xdb\xdb\xdb\xdb\xdb\xdb\xdb”);
}
// function for creating new accounts for the customer and those who already have can sign in//struct user
{
char username[10];
char password[10];
char phone[10];
}*pUser;void userlogin()
{FILE *fp;
char uName[10], pwd[10], ph[10];
int i,choiceee;
char c;//assigning memory to structure dynmically//
pUser=(struct user *)malloc(sizeof(struct user));printf(“1. Login Through An Existing Account\n2. Create New account\n\n”);
scanf(“%d”,& i);system(“cls”);switch(i){
case 1:
if ( ( fp=fopen(“user.dat”, “r+”)) == NULL) {
if ( ( fp=fopen(“user.dat”, “w+”)) == NULL) {
printf (“Could not open file\n”);
exit ( 1);
}
}
//asking user name and password for signing in//
printf(“Username: “);
scanf(“%9s”,uName);
printf(“Password: “);
scanf(“%9s”,pwd);
printf(“Phone: “);
scanf(“9f”,ph);
//traversing and checking if record exist//
while ( fread (pUser, sizeof(struct user), 1, fp) == 1) {
if( strcmp ( pUser->username, uName) == 0)
{
printf (“Match username\n”);
if( strcmp ( pUser->password, pwd) == 0)
{
printf (“Match password\n”);
if( strcmp ( pUser->phone, ph) == 0)
{
printf(“Match Number\n”);
printf(“login successfully!”);
printf(“\t\t\tSYSTEM IS LOADING…”);
for(i=0;i<6;i++)
{
printf(“.”);
Sleep(500);
}
printf(“Press 1 to pay bill or 2 to display your record: “);
scanf(“%d”, &choiceee);
getch();
system(“cls”);
if(choiceee==1)
{
store_bill();
}
if(choiceee==2)
{
show_bill();
}
}
else
{
printf(“wrong attempt!”);
userlogin();
}
}
}
break;
case 2:
do
{
//opening file//
if ( ( fp=fopen(“user.dat”, “a+”)) == NULL) {
if ( ( fp=fopen(“user.dat”, “w+”)) == NULL) {
printf (“Could not open file\n”);
exit ( 1);
}
}
printf(“Choose A Username: “);
scanf(“%9s”,pUser->username);
printf(“Choose A Password: “);
scanf(“%9s”,pUser->password);
printf(“Enter Your phone “);
scanf(“%9s”,pUser->phone);
system(“cls”);
fwrite (pUser, sizeof(struct user), 1, fp);
printf(“\nAdd another account? (Y/N): “);
scanf(” %c”,&c);  //skip leading whitespace
}while(c==’Y’||c==’y’);
printf(“Press 1 to pay bill or 2 to display your record: “);
scanf(“%d”, &choiceee);
getch();
system(“cls”);
if(choiceee==1)
{
store_bill();
}
if(choiceee==2)
{
show_bill();
}
break;
}
free ( pUser);  //free allocated memory
fclose(fp);
}
}struct bill
{
char name[100];
char date[100];
float amount;
float units;
int regno;
}c,b;void store_bill()
{char c;
float a;
FILE *fp;if ( ( fp=fopen(“bill.dat”, “r+”)) == NULL) {
if ( ( fp=fopen(“bill.dat”, “w+”)) == NULL) {
printf (“Could not open file\n”);
exit ( 1);
}
}
//asking all necessary information to add in employes file//
printf(“\nEnter your name please: “);
fflush(stdin);
gets(b.name);
printf(“\nEnter date today(month/year): “);
fflush(stdin);
gets(b.date);
printf(“\nEnter no of units used :”);
scanf(“%f”, &b.units);
b.amount=b.units*2.87;
printf(“\nEnter your regno: “);
scanf(“%d”, &b.regno);
fprintf(fp,”%s %s %f %d\n”,b.name,b.date,b.amount,b.regno);
printf(“YOUR BILL RECORD SUCCESSFULLY ADDED “);
fclose(fp);
getch();
system(“cls”);
user_exit();
}void show_bill()
{
int flag=1;
FILE *ptr;
ptr=fopen(“bill.dat”, “a+”);
{
if(ptr==NULL)
{
printf(“something went wrong   :”);
userlogin();
}
}printf(“\nEnter the date of the bill you paid and your Regno:”);
fflush(stdin);
gets(c.date);
fflush(stdin);
scanf(“%d”, &c.regno);
system(“cls”);
printf(“\n\n”);
while(fscanf(ptr,”%s %s %f %d\n”,b.name,b.date,&b.amount,&b.regno)!=EOF)
{
if(c.date==b.name && c.regno==b.regno)
{
printf(“\n”);
flag=1;
printf(“\tMONTH = %s “, b.date );
printf(“\t\tAMOUNT OF BILL = %f “, b.amount);}
else
{
if(flag==0)
{
printf(“No Record Found!!!”);
}
}}
fclose(ptr);
system(“cls”);
user_exit();}int main()
{
welcome_board();
system(“cls”);
userlogin();return 0;
}

END

Learn Railway Reservation Project in C (CLICK)

This is the 1st Output Screen of Our Bussiness Project. Where we shaw Customer Bill Portal with a Respective message and Current Time and Date. of Management and Billing System Project in C

Press any Key for Continue…After That…

Restaurant Customer billing system project in C

Here two Optionof Management and Billing System Project in C for you:-

Actually, the 1st Option showing you your Account information, If you are a new customer in this portal then you need to choose the 2nd Option for creating your Account.

C program for login and password

After Creating a new account in Management and Billing System Project in C, If You Press any key…

(You got the same option again for creating an Account)

if you Press N:-

Store management system project in C

After Pressing the 1st option for paying the bill then you need to Enter your Username, Current Time and Date, Ammount of used Unit with your Registration No. After fill this in Management and Billing System Project in C, you got an Option like this:-

After Pressing the 2nd option for paying the bill then you need to Enter the Date of your Bill with Regno (Registered Number)

If you fill your correct Regno and Date then you Got a list of Your Amount.

 Note:-

1. Management and Billing System Project in C is not working with Turbo C IDE.
2. Maybe if you are Codeblocks IDE User then it will show you “windows.h” Error. (Because I’m sure you will use “GNU GCC”  that is not for windows, You need to change your compiler and Install the MinGW compiler, MinGW is the minimum GNU for windows users.
3. If you are not a windows user then you can use Your OS name with Extension (Linux.h, Ubuntu.h) instead of “Windows.h” Management and Billing System Project in C