- Customer - The intended users of the proposed web-based billing and collection system.
- Efficiency is a group of traits that affect how software performs and how many resources are used when particular circumstances exist. These traits include temporal behavior and resource utilization.
- Functionality - A group of elements, including suitability, accuracy, interoperability, and security, affect the existence of a group of functions and their claimed attributes.
- The ability of software to be moved from one environment to another depends on a number of factors, including adaptability, install ability, cohabitation, and replace ability.
- Reliability is the capacity of software to maintain its level of performance over an extended period of time while operating in a given environment. Three qualities that impact this ability are maturity, fault tolerance, and recoverability.
Program Breakdown
Example
struct item
{
int productno ;
char productname [ 10 ] ;
int quantity ;
int price ;
}
item ;
Above is the structure for items.
Example
struct customer
{
int productno ;
char productname [ 10 ] ;
int quantity ;
int price ;
int amount ;
}
Above is the structure for customers.
Example
struct temporary
{
int productno;
char productname[10];
int quantity;
int price;
int amount;
}
Above is the structure for temporary.
Example
void create ( )
{
int i = 0 ;
FILE * fp ;
fp = fopen ( " Records.txt " , " w " ) ;
if ( fp = = NULL )
{
printf ( " Error \ n " ) ;
}
printf ( " \ t " ) ;
printf ( " Enter the Number of Records : " ) ;
scanf ( " % d " , & n ) ;
printf ( " \ n " ) ;
FILE * fpq ;
fpq = fopen ( " Quantity.txt " , " w " ) ;
fprintf ( fp , " productno \ t , ProductName \ t , Quantity \ n , Price \ t " ) ;
fprintf ( fpq , " % d " , n ) ;
fclose ( fpq ) ;
while ( i < n )
{
printf ( " \ t " ) ;
printf ( " Enter Product Code : " ) ;
scanf ( " % d " , & item.productno ) ;
printf ( " \ t " ) ;
printf ( " Enter Product Name : " ) ;
scanf ( " % s " , item.productname ) ;
printf ( " \ t " ) ;
printf ( " Enter Quantity : " ) ;
scanf ( " % d " , & item.quantity ) ;
printf ( " \ t " ) ;
printf ( " Enter Price : " ) ;
scanf ( " % d " , & item.price ) ;
printf ( " \ n " ) ;
i + + ;
fprintf ( fp , " % d \ t % s \ t % d \ t % d \ t " , item.productno , item.productname , item.quantity , item.price ) ;
fclose ( fp ) ;
printf ( " \ t " ) ;
printf ( " Records are Created " ) ;
printf ( " \ n " ) ;
printf ( " \ n " ) ;
}
The function mentioned above will display to the user various choices such as product number, product name, quantity, and price.
Example
void bill ( )
{
int na = 0 ; //used for product number in scanf function
int a = 0 ; /**/
int cont = 0 ;
int k = 0 ;
int r = 0 ;
int w = 0 ;
int ch = 0 ;
int l = 0 ; /**/
int bi = 0 ;
int ln = 0 ;
printf ( " \ t " ) ;
l3 : printf ( " Enter the Product Number : " ) ;
scanf ( " % d " , & na ) ;
printf ( " \ n " ) ;
FILE * fp ;
fp = fopen ( " Records.txt " , " w " ) ;
FILE * fptr ;
fptr = fopen ( " temp.txt " , " w " ) ;
while ( ! ( feof ( fp ) ) )
{
l + + ;
fscanf ( fp , " % d " , & item.productno ) ;
fscanf ( fp , " % s " , item.productname ) ;
fscanf ( fp , " % d " , & item.quantity ) ;
fscanf ( fp , " % d " , & item.price ) ;
if ( item.productno = = na )
{
ln + + ;
if ( ln = = 2 )
break ;
printf ( " Enter the Quantity : " ) ;
scanf ( " % d " , & a ) ;
if ( a <= item.quantity )
{
cst [ ti ].productno = item.productno ;
strcpy ( cst [ ti ].productname , item.productname ) ;
cst [ ti ].quantity = a ;
cst [ ti ].price = item.price ;
item.quantity = item.quantity - a ;
ti + + ;
//goto l1 ;
}
else
{
printf ( " Sorry Out of Stock \ n " ) ;
bi + + ;
//goto l1 ;
}
}
else
{
cont + + ;
fprintf ( fptr , " % d \ t " , item.productno ) ;
fprintf ( fptr , " % s \ t " , item.productname ) ;
fprintf ( fptr , " % d \ t " , item.quantity ) ;
fprintf ( fptr , " % d \ t " , item.price ) ;
continue ;
}
fprintf ( fptr , " % d \ t " , item.productno ) ;
fprintf ( fptr , " % s \ t " , item.productname ) ;
fprintf ( fptr , " % d \ t " , item.quantity ) ;
fprintf ( fptr , " % d \ t " , item.price ) ;
}
if ( l = = cont )
printf ( " Error : Choose Properly \ n " ) ;
fclose ( fptr ) ;
fclose ( fp ) ;
remove ( " Records.txt " ) ;
rename ( " temp.txt " , " Records.txt " ) ;
ln = 0 ;
printf ( " Do you Want to Shop More : \ n Press 1 for More \ n Press 2 to Exit " ) ;
scanf ( " % d " , & k ) ;
if ( k = = 1 )
goto l3 ;
}
The code provided above will produce the invoice for the items input by the user.
Example
void display ( )
{
int nk = 0 ;
FILE * fp ;
fp = fopen ( " Records.txt " , " r " ) ;
if ( feof ( fp ) )
{
printf ( " Error in Opening Files \ n " ) ;
}
printf ( " \ t " ) ;
printf ( " = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = \ n " ) ;
printf ( " \ t " ) ;
printf ( " | Product Number \ t | Product Name \ t | Quantity \ t | Price \ t \ n " ) ;
printf ( " \ t " ) ;
printf ( " = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = \ n " ) ;
while ( nk ! = n )
{
nk + + ;
fscanf ( fp , " % d " , & item.productno ) ;
if ( item.productno = = 0 )
{
printf ( " \ t " ) ;
printf ( " There are no items in Cart " ) ;
printf ( " \ n " ) ;
break ;
}
fscanf ( fp , " % s " , item.productname ) ;
fscanf ( fp , " % d " , & item.quantity ) ;
fscanf ( fp , " % d " , & item.price ) ;
printf ( " \ n \ t % 14d | \ t % 8s | \ t % 8d | \ t % d | \ n " , item.productno , item.productname , item.quantity , item.price ) ;
// printf ( " \ n " ) ;
}
fclose ( fp ) ;
}
To exhibit the data stored in the record text file, the aforementioned code will be executed.
Example
void edit ( )
{
FILE * fp ;
FILE * fptr ;
FILE * fpk ;
int h ;
int found = 0 ;
int ka = 0 ;
int p ;
fp = fopen ( " Records.txt " , " r " ) ;
fptr = fopen ( " temp1.txt " , " w " ) ;
fpk = fopen ( " temp2.txt " , " w " ) ;
printf ( " \ t " ) ;
printf ( " Enter the Product Number to Delete : " ) ;
scanf ( " % d " ,& h ) ;
printf ( " \ n " ) ;
p = n ;
while ( ! ( ka == p ) )
{
ka + + ;
fscanf ( fp , " % d " , & item.productno ) ;
if ( item.productno == h )
{
found = 1 ;
fscanf ( fp , " % s " , item.productname ) ;
fscanf ( fp , " % d " , & item.quantity ) ;
fscanf ( fp , " % d " , & item.price ) ;
n - - ;
printf ( " \ t " ) ;
printf ( " Product has been Successfully Deleted \ n " ) ;
}
else
{
fscanf ( fp , " % s " , item.productname ) ;
fscanf ( fp , " % d " , & item.quantity ) ;
fscanf ( fp , " % d " , & item.price ) ;
fprintf ( fptr , " % d \ t % s \ t % d \ t % d \ t " , item.productno , item.productname , item.quantity , item.price ) ;
}
}
fprintf ( fpk , " % d " , n ) ;
fclose ( fpk ) ;
fclose ( fptr ) ;
fclose ( fp ) ;
if ( found == 0 )
{
printf ( " \ t " ) ;
printf ( " Product no Found " ) ;
printf ( " \ n " ) ;
printf ( " \ n " ) ;
}
remove ( " Quantity.txt " ) ;
rename ( " temp2.txt " , " Quantity.txt " ) ;
remove ( " Records.txt " ) ;
rename ( " temp1.txt " , " Records.txt " ) ;
}
To modify the product information, the code mentioned above will be executed.
Example
void invoice ( )
{
int j ;
int o ;
float gt = 0 ;
if ( ti == 0 )
{
printf ( " There are No Products in your Cart " ) ;
printf ( " \ n " ) ;
}
printf ( " \ n \ n " ) ;
printf ( " * * * ** * * * * * * * * * * * * * * * * * * INVOICE * * * ** * * * * * * * * * * * * * * * * * * " ) ;
printf ( " \ n \ n " ) ;
printf ( " product number \ t | product name \ t | price \ t | quantity \ t | amount \ t | \ n " ) ;
printf ( " * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * \ n " ) ;
for ( o = 0 ; o < ti ; o + + )
{
cst [ o ].amount = 0 ;
cst [ o ].amount = ( ( cst [ o ].price ) * ( cst [ o ].quantity ) ) ;
gt = gt + cst [ o ].amount ;
}
for ( j = 0 ; j < ti ; j + + )
{
printf ( "% 6 d \ t | % 9s \ t | % 3 d \ t | % 3 d \ t | % 3 d \ n " , cst [ j ].productno , cst [ j ].productname ,cst [ j ].price , cst [ j ].quantity , cst [ j ].amount ) ;
}
printf ( " \ n Amount Payable : % f " , gt ) ;
printf ( " \ n " ) ;
printf ( " Thank you for Shopping " ) ;
printf ( " \ n " ) ;
printf ( " Visit Again " ) ;
printf ( " \ n " ) ;
}
The above code will give the invoice of the
Example
void mdelete ( )
{
int i = 0 ;
int j = 0 ;
int f = 0 ;
int g = 0 ;
int ag = 0 ;
int aj = 0 ;
char ab [ 100 ] ;
FILE * fw ;
FILE * fq ;
printf ( " \ t" ) ;
printf ( " Enter the Product Number to be Deleted : " ) ;
scanf ( " % d " , & f ) ;
printf ( " \ n " ) ;
for ( i = 0 ; i < ti ; i + + )
{
if ( cst [ ti ].productno == f )
{
aj = cst [ i ].quantity ;
printf ( " \ t " ) ;
printf ( " Product Deleted Successfully " ) ;
printf ( " \ n " ) ;
}
continue ;
cstr [ g ].productno = cst [ i ].productno ;
strcpy ( cstr [ g ].productname , cst [ i ].productname ) ;
cstr [ g ].quantity = cst [ i ].quantity ;
cstr [ g ].price = cst [ i ].price ;
g + + ;
}
for ( j = 0 ; j < g ; j + + )
{
cst [ j ].productno = cstr [ j ].productno ;
strcpy ( cst [ j ].productname , cstr [ j ].productname ) ;
cst [ j ].quantity = cstr [ j ].quantity ;
cst [ j ].price = cstr [ j ].price ;
}
ti = g ;
printf ( " \ n % d " , aj ) ;
fq = fopen ( " shop.txt " , " r " ) ;
fw = fopen ( " temp4.txt " , " w " ) ;
for ( j = 0 ; j < n ; j + + )
{
fscanf ( fq , " % d " , & item.productno ) ;
fscanf ( fq , " % s " , item.productname ) ;
fscanf ( fq , " % d " , & item.quantity ) ;
fscanf ( fq , " % d " , & item.price ) ;
if ( item.productno == f )
{
ag = aj + item.quantity ;
fprintf ( fw , " % d \ t % s \ t % d \ t % d \ t " , item.productno , item.productname , ag , item.price ) ;
}
else
{
fprintf ( fw , " % d \ t % s \ t % d \ t % d \ t " , item.productno , item.productname , item.quantity , item.price ) ;
}
}
fclose ( fq ) ;
fclose ( fw ) ;
remove ( " Records.txt " ) ;
rename ( " temp4.txt " , " Records.txt " ) ;
}
If a user wishes to remove an item, the code mentioned above will be executed.
Example
void mdisplay ( )
{
int i ;
int j ;
int o ;
printf ( " = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = \n");
printf ( " product number \ t | product name \ t | quantity \ t | price \ t \ n " ) ;
printf ( " = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = \n");
for ( o = 0 ; o < ti ; o + + )
{
printf ( " % 14 d \ t | % 12s \ t | % 6 d \ t | % 6 d \ n " , cst [ o ].productno , cst [ o ].productname , cst [ o ].quantity , cst [ o ].price ) ;
}
}
The code snippet above will exhibit the product number, product name, quantity, and price.
Program for Customer Billing System
Example
#include<stdio.h>
#include<string.h>
#include<ctype.h>
#include<conio.h>
struct item
{
int productno;
char productname[10];
int quantity;
int price;
}
item;
struct customer
{
int productno;
char productname[10];
int quantity;
int price;
int amount;
}
cst[100];
struct temporary
{
int productno;
char productname[10];
int quantity;
int price;
int amount;
}
cstr[100];
int t=0;
int n=0; //used in Quantity and Records.txt
int k=0;
int ba=0;
int ti=0;
void create()
{
int i=0;
FILE *fp;
fp=fopen("Records.txt","w");
if(fp==NULL)
{
printf("Error\n");
}
printf("\t");
printf("Enter the Number of Records:");
scanf("%d",&n);
printf("\n");
FILE *fpq;
fpq=fopen("Quantity.txt","w");
fprintf(fp,"productno\t,ProductName\t, Quantity\n, Price\t");
fprintf(fpq,"%d",n);
fclose(fpq);
while(i<n)
{
printf("\t");
printf("Enter Product Code:");
scanf("%d",&item.productno);
printf("\t");
printf("Enter Product Name:");
scanf("%s",item.productname);
printf("\t");
printf("Enter Quantity:");
scanf("%d",&item.quantity);
printf("\t");
printf("Enter Price:");
scanf("%d",&item.price);
printf("\n");
i++;
fprintf(fp,"%d\t%s\t%d\t%d\t",item.productno,item.productname,item.quantity,item.price);
}
fclose(fp);
printf("\t");
printf("Records are Created");
printf("\n");
printf("\n");
}
void bill()
{
int na=0; //used for product number in scanf function
int a=0; /**/
int cont=0;
int k=0;
int r=0;
int w=0;
int ch=0;
int l=0; /**/
int bi=0;
int ln=0;
printf("\t");
l3 : printf("Enter the Product Number:");
scanf("%d",&na);
printf("\n");
FILE *fp;
fp=fopen("Records.txt","w");
FILE *fptr;
fptr=fopen("temp.txt","w");
while(!(feof(fp)))
{
l++;
fscanf(fp,"%d",&item.productno);
fscanf(fp,"%s",item.productname);
fscanf(fp,"%d",&item.quantity);
fscanf(fp,"%d",&item.price);
if(item.productno == na)
{
ln++;
if(ln==2)
break;
printf("Enter the Quantity:");
scanf("%d",&a);
if(a <= item.quantity)
{
cst[ti].productno=item.productno;
strcpy(cst[ti].productname,item.productname);
cst[ti].quantity=a;
cst[ti].price=item.price;
item.quantity=item.quantity-a;
ti++;
//goto l1;
}
else
{
printf("Sorry Out of Stock\n");
bi++;
//goto l1;
}
}
else
{
cont++;
fprintf(fptr,"%d\t",item.productno);
fprintf(fptr,"%s\t",item.productname);
fprintf(fptr,"%d\t",item.quantity);
fprintf(fptr,"%d\t",item.price);
continue;
}
fprintf(fptr,"%d\t",item.productno);
fprintf(fptr,"%s\t",item.productname);
fprintf(fptr,"%d\t",item.quantity);
fprintf(fptr,"%d\t",item.price);
}
if(l==cont)
printf("Error:Choose Properly\n");
fclose(fptr);
fclose(fp);
remove("Records.txt");
rename("temp.txt","Records.txt");
ln=0;
printf("Do you Want to Shop More:\nPress 1 for More\nPress 2 to Exit");
scanf("%d",&k);
if(k==1)
goto l3;
}
void display()
{
int nk=0;
FILE *fp;
fp=fopen("Records.txt","r");
if(feof(fp))
{
printf("Error in Opening Files\n");
}
printf("\t");
printf(" = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = \n");
printf("\t");
printf("|Product Number\t|Product Name\t|Quantity\t|Price\t\n");
printf("\t");
printf(" = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = \n");
while(nk!=n)
{
nk++;
fscanf(fp,"%d",&item.productno);
if(item.productno==0)
{
printf("\t");
printf("There are no items in Cart");
printf("\n");
break;
}
fscanf(fp,"%s",item.productname);
fscanf(fp,"%d",&item.quantity);
fscanf(fp,"%d",&item.price);
printf("\n\t %14d|\t%8s|\t%8d|\t%d|\n",item.productno,item.productname,item.quantity,item.price);
//printf("\n");
}
fclose(fp);
}
void edit()
{
FILE *fp;
FILE *fptr;
FILE *fpk;
int h;
int found=0;
int ka=0;
int p;
fp=fopen("Records.txt","r");
fptr=fopen("temp1.txt","w");
fpk=fopen("temp2.txt","w");
printf("\t");
printf("Enter the Product Number to Delete: ");
scanf("%d",&h);
printf("\n");
p=n;
while(!(ka==p))
{
ka++;
fscanf(fp,"%d",&item.productno);
if(item.productno==h)
{
found=1;
fscanf(fp,"%s",item.productname);
fscanf(fp,"%d",&item.quantity);
fscanf(fp,"%d",&item.price);
n--;
printf("\t");
printf("Product has been Successfully Deleted\n");
}
else
{
fscanf(fp,"%s",item.productname);
fscanf(fp,"%d",&item.quantity);
fscanf(fp,"%d",&item.price);
fprintf(fptr,"%d\t%s\t%d\t%d\t",item.productno,item.productname,item.quantity,item.price);
}
}
fprintf(fpk,"%d",n);
fclose(fpk);
fclose(fptr);
fclose(fp);
if(found==0)
{
printf("\t");
printf("Product no Found");
printf("\n");
printf("\n");
}
remove("Quantity.txt");
rename("temp2.txt","Quantity.txt");
remove("Records.txt");
rename("temp1.txt","Records.txt");
}
void invoice()
{
int j;
int o;
float gt=0;
if(ti==0)
{
printf("There are No Products in your Cart");
printf("\n");
}
printf("\n\n");
printf(" * * * ** * * * * * * * * * * * * * * * * * * INVOICE * * * ** * * * * * * * * * * * * * * * * * * ");
printf("\n\n");
printf("product number\t| product name\t| price\t| quantity\t| amount\t|\n");
printf(" * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * \n");
for(o=0;o<ti;o++)
{
cst[o].amount=0;
cst[o].amount=((cst[o].price)*(cst[o].quantity));
gt=gt+cst[o].amount;
}
for(j=0;j<ti;j++)
{
printf("%6d\t |%9s \t | %3d\t|%3d\t | %3d\n",cst[j].productno,cst[j].productname,cst[j].price,cst[j].quantity,cst[j].amount);
}
printf("\nAmount Payable:%f",gt);
printf("\n");
printf("Thank you for Shopping");
printf("\n");
printf("Visit Again");
printf("\n");
}
void mdelete()
{
int i=0;
int j=0;
int f=0;
int g=0;
int ag=0;
int aj=0;
char ab[100];
FILE *fw;
FILE *fq;
printf("\t");
printf("Enter the Product Number to be Deleted:");
scanf("%d",&f);
printf("\n");
for(i=0;i<ti;i++)
{
if(cst[ti].productno==f)
{
aj=cst[i].quantity;
printf("\t");
printf("Product Deleted Successfully");
printf("\n");
}
continue;
cstr[g].productno=cst[i].productno;
strcpy(cstr[g].productname,cst[i].productname);
cstr[g].quantity=cst[i].quantity;
cstr[g].price=cst[i].price;
g++;
}
for(j=0;j<g;j++)
{
cst[j].productno=cstr[j].productno;
strcpy(cst[j].productname,cstr[j].productname);
cst[j].quantity=cstr[j].quantity;
cst[j].price=cstr[j].price;
}
ti=g;
printf("\n%d",aj);
fq=fopen("shop.txt","r");
fw=fopen("temp4.txt","w");
for(j=0;j<n;j++)
{
fscanf(fq,"%d",&item.productno);
fscanf(fq,"%s",item.productname);
fscanf(fq,"%d",&item.quantity);
fscanf(fq,"%d",&item.price);
if(item.productno==f)
{
ag=aj+item.quantity;
fprintf(fw,"%d\t%s\t%d\t%d\t",item.productno,item.productname,ag,item.price);
}
else
{
fprintf(fw,"%d\t%s\t%d\t%d\t",item.productno,item.productname,item.quantity,item.price);
}
}
fclose(fq);
fclose(fw);
remove("Records.txt");
rename("temp4.txt","Records.txt");
}
void mdisplay()
{
int i;
int j;
int o;
printf(" = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = \n");
printf("product number\t|product name\t|quantity\t|price\t\n");
printf(" = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = \n");
for(o=0;o<ti;o++)
{
printf("%14d\t|%12s\t|%6d\t|%6d\n",cst[o].productno,cst[o].productname,cst[o].quantity,cst[o].price);
}
}
int main()
{
char ch,password[10],q[10]="admin";
int s=0;
int y=0;
int w=1;
int i;
FILE *fpe;
fpe=fopen("Quantity.txt","r");
fscanf(fpe,"%d",&n);
fclose(fpe);
printf("\n");
q: printf("\n\t");
printf(" * * * * * * * * * * * * * * * * * * * * * * * * * * * * ");
printf("\n");
printf("\t");
printf("Please Select an Option: ");
printf("\n");
printf("\t");
printf(" * * * * * * * * * * * * * * * * * * * * * * * * * * * * ");
printf("\n");
printf("\t");
printf("01. ADMINISTRATOR");
printf("\n\t");
printf("02. CUSTOMER");
printf("\n\t");
printf("03. EXIT");
printf("\n");
printf("\n\t");
printf("Please Enter an Option: ");
scanf("%d",&s);
switch(s)
{
case 1: printf("\tEnter Password:\t");
for(i=0;i<5;i++)
{
ch = getch();
password[i] = ch;
ch = '*' ;
printf("%c",ch);
}
password[i]='\0';
if(strcmp(password,q))
{
printf("\n\t");
printf("Wrong Password Please Try Again");
printf("\n\n");
goto q;
}
else
goto l3;
l3: printf("\n\t");
printf("Access Granted\n");
printf("\n\n");
printf("\t");
printf(" * * * * * * * * * * * * * * * * * * * * * * * * * * * * ");
printf("\n");
printf("\t");
printf("Please Select an Option: ");
printf("\n");
printf("\t");
printf(" * * * * * * * * * * * * * * * * * * * * * * * * * * * * ");
printf("\n");
printf("\t01.CREATE");
printf("\n\t");
printf("02.DELETE/MODIFY");
printf("\n\t");
printf("03.DISPLAY");
printf("\n\t");
printf("04.MAIN MENU");
printf("\n");
printf("\n");
printf("\t");
printf("Please Enter an Option: ");
scanf("%d",&y);
switch(y)
{
case 1:create();
goto q;
case 2:edit();
goto q;
case 3:display();
goto q;
case 4: goto q;
default : printf("error\n");
goto q;
}
break;
case 2: printf("\n");
printf("\t");
printf(" * * * * * * * * * * * * * * * * * * * * * * * * * * * * ");
printf("\n");
printf("\t");
printf("Plese Select an Option: ");
printf("\n");
printf("\t");
printf(" * * * * * * * * * * * * * * * * * * * * * * * * * * * * ");
printf("\n");
printf("\t");
printf("01.BILL");
printf("\n\t");
printf("02.INVOICE");
printf("\n\t");
printf("03.DISPLAY");
printf("\n\t");
printf("04.MYCART");
printf("\n\t");
printf("05.MAIN MENU");
printf("\n\t");
printf("06.DELETE ITEMS IN CART\n");
printf("\n\t");
printf("Please Enter an Option: ");
scanf("%d",&y);
printf("\n");
switch(y)
{
case 1 : bill();
goto q;
case 2 : invoice();
goto q;
case 3 : display();
goto q;
case 4 : mdisplay();
goto q;
case 5 : goto q;
case 6 : mdelete();
goto q;
default : printf("Error\n");
goto q;
}
break;
case 3: printf("\tExiting...\n");
break;
default : printf("error\n");
break;
}
}
Output:
Output
* * * * * * * * * * * * * * * * * * * * * * * * * * * *
Please Select an Option:
* * * * * * * * * * * * * * * * * * * * * * * * * * * *
01. ADMINISTRATOR
02. CUSTOMER
03. EXIT
Please Enter an Option:
Please Enter an Option: 2
* * * * * * * * * * * * * * * * * * * * * * * * * * * *
Plese Select an Option:
* * * * * * * * * * * * * * * * * * * * * * * * * * * *
01.BILL
02.INVOICE
03.DISPLAY
04.MYCART
05.MAIN MENU
06.DELETE ITEMS IN CART
Please Enter an Option: 2
There are No Products in your Cart
* * * * * * * * * * * * * * * * * * * * * * INVOICE * * * * * * * * * * * * * * * * * * * * * *
product number | product name | price | quantity | amount |
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
Amount Payable:0.000000
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