C++ Project on Telephone Billing System
Telephone Billing System
#include”graphics.h”
#include
#include
#include
#include
#include
#include
#include
#include
#include
void proj_name(void);
void created(void);
class consumer
{
public:
long unsigned int tel_no;
long unsigned int con_no;
char name[60];
char add[300];
char city[40];
long unsigned int op_rdg;
long unsigned int cl_rdg;
long unsigned int met_calls;
long unsigned int free_calls;
long unsigned int charge_calls;
float met_charge;
float rent;
float debits;
float tax;
float credits;
float gross_amt;
float surcharge;
long unsigned int net_amt_bef;
long unsigned int net_amt_aft;
public:
void get_data(void);
void show_data(void);
};
void consumer::get_data(void)
{
setfillstyle(1,BLACK);
bar(0,0,680,480);
consumer g1; int a; char ch;
setlinestyle(0,0,3);
setcolor(BROWN);
settextstyle(1,0,5);
outtextxy(90,20,“ENTER THE RECORD:-”);
setfillstyle(1,BLACK);
bar(50,100,550,400);
rectangle(50,100,550,400);
gotoxy(10,10);
cout< <“TELEPHONE NO. :”;
cout<>op_rdg;
gotoxy(10,20);
cout< <“CLOSING READING :”;
cin>>cl_rdg;
met_calls=cl_rdg-op_rdg;
free_calls=150;
rent=360;
if(met_calls>debits;
tax=(rent+met_charge+debits)/20;
gross_amt=(met_charge+rent+tax+debits);
gotoxy(10,24);
cout< <“CREDITS :”;
cin>>credits;
if(credits>gross_amt)
net_amt_bef=0;
else
net_amt_bef=gross_amt-credits;
if(credits>=gross_amt)
surcharge=0;
else
surcharge=20;
net_amt_aft=net_amt_bef+surcharge;
}
void consumer::show_data(void)
{
bar(0,0,660,480);
setcolor(RED);
settextstyle(8,0,3);
outtextxy(55,10,“BHARAT SANCHAR NIGAM LIMITED”);
setlinestyle(1,0,3);
line(51,40,486,40);
gotoxy(10,5);
settextstyle(3,0,1);
setcolor(BROWN);
outtextxy(15,55,“TELEPHONE NO.”);
outtextxy(330,55,“CONSUMER NO.”);
outtextxy(15,170,“OPENING READING “);
outtextxy(15,205,“CLOSING READING “);
outtextxy(15,235,“METERED CALLS “);
outtextxy(15,268,“FREE CALLS “);
outtextxy(15,300,“CHARGABLE CALLS “);
setcolor(BROWN);
outtextxy(330,170,“METERED CALLS “);
outtextxy(330,205,“DEBITS “);
outtextxy(330,235,“TAXES “);
outtextxy(330,268,“GROSS AMOUNT “);
outtextxy(330,300,“CREDITS “);
outtextxy(330,140,“RENTAL “);
setcolor(MAGENTA);
outtextxy(15,327,“AMOUNT PAYABLE IF PAID ON OR BEFORE “);
setcolor(BROWN);
outtextxy(15,350,“SURCHARGE “);
setcolor(MAGENTA);
outtextxy(15,377,“AMOUNT PAYABLE IF PAID ON OR AFTER “);
setcolor(RED);
setlinestyle(0,0,3);
bar(70,90,320,160);
rectangle(70,90,320,160);
gotoxy(20,5);
cout< >a;
setfillstyle(1,0);
//TO ADD NEW RECORD
if(a==1)
{
do
{
setfillstyle(1,LIGHTMAGENTA);
bar(0,0,679,679);
settextstyle(1,0,4);
setcolor(BLUE);
outtextxy(90,10,"ENTER THE RECORD:-");
gotoxy(40,9);
long unsigned int tel_no;
outtextxy(50,110,"TELEPHONE_NO :");
cin>>tel_no;
fin.seekg(0);
do
{
fin.read((char*)&g1,sizeof(g1));
if(fin.eof())
break;
if(g1.tel_no==tel_no)
{
bar(0,0,679,679);
settextstyle(1,0,3);
setfillstyle(1,LIGHTCYAN);
bar(20,200,610,250);
outtextxy(20,220,"PERSON WITH THIS TELEPHONE_NO ALREADY EXISTS");
delay(2000);
goto u;
}
}while(!fin.eof());
fin.close();
fin.open("m.dat",ios::app|ios::out|ios::in|ios::ate|ios::binary);
fin.seekg(0,ios::end) ;
long unsigned int r=fin.tellg();
long unsigned int t=(r/sizeof(g1))+1;
con_no=t;
g1.tel_no=tel_no;
g1.con_no=con_no;
g1.get_data();
fin.write((char*)&g1,sizeof(g1));
setcolor(RED);
settextstyle(8,0,4);
outtextxy(12,420,"ENTER ANY OTHER RECORD(Y/N)");
setfillstyle(1,4);
bar(250,450,270,470);
gotoxy(37,35);
answer=getche();
}
while ((answer=='Y')||(answer=='y'));
goto u;
}
//TO SEE THE RECORDS
else if(a==2)
{
fin.seekg(0);
fin.read((char*)&g1,sizeof(g1)) ;
do
{
clrscr();
g1.show_data();
fin.read((char*)&g1,sizeof(g1));
getch();
}
while(!fin.eof());
fin.close();
goto i;
}
//FOR ENQUIRY
else if (a==3)
{
long unsigned int tel_no1;
bar(0,0,679,679);
setcolor(GREEN);
outtextxy(70,150,“ENTER THE TELEPHONE_NO OF PERSON :”);
gotoxy(35,15);
cin>>tel_no1;
bar(0,0,679,679);
fin.seekg(0);
do
{
fin.read((char*)&g1,sizeof(g1));
if(fin.eof())
goto y;
else if(g1.tel_no==tel_no1)
break;
}
while(fin);
g1.show_data();
getch();
goto u;
}
//FOR MODIFICATION
else if(a==4)
{
long unsigned int tel_no2;
long unsigned int con_no;
char name[60];
char add[300];
char city[40];
long unsigned int op_rdg;
long unsigned int cl_rdg;
long unsigned int met_calls;
long unsigned int free_calls;
long unsigned int charge_calls;
float met_charge;
float rent;
float debits;
float tax;
float credits;
float gross_amt;
float surcharge;
long unsigned int net_amt_bef;
long unsigned int net_amt_aft;
bar(0,0,679,679);
setcolor(MAGENTA);
outtextxy(100,150,“ENTER THE TELEPHONE_NO OF PERSON “);
outtextxy(100,180,” TO BE MODIFIED “);
gotoxy(35,17);
cin>>tel_no2;
setfillstyle(1,0);
fin.seekg(0);
do
{
fin.read((char*)&g1,sizeof(g1));
if(fin.eof())
{
setfillstyle(1,LIGHTMAGENTA);
bar(0,0,679,679);
setfillstyle(1,LIGHTCYAN);
bar(40,200,565,250);
setcolor(BLUE);
settextstyle(1,0,3);
outtextxy(70,220,"DESIRED TELEPHONE_NO DOES NOT EXISTS");
delay(2000);
setfillstyle(1,0);
goto u;
}
if(g1.tel_no==tel_no2)
{
char ch;
long unsigned int b=fin.tellg();
long unsigned int s=sizeof(g1);
fin.close();
fin.open("m.dat",ios::out|ios::ate|ios::binary);
fin.seekp(b-s);
setfillstyle(1,BLACK);
bar(0,0,680,480);
setlinestyle(0,0,3);
setcolor(BROWN);
settextstyle(1,0,5);
outtextxy(90,20,"ENTER THE RECORD:-");
setfillstyle(1,BLACK);
bar(50,100,550,400);
rectangle(50,100,550,400);
gotoxy(10,10);
cout< <"TELEPHONE NO. :";
cout<>op_rdg;
gotoxy(10,20);
cout< <"CLOSING READING :";
cin>>cl_rdg;
met_calls=cl_rdg-op_rdg;
free_calls=150;
rent=360;
if(met_calls>debits;
tax=(rent+met_charge+debits)/20;
gross_amt=(met_charge+rent+tax+debits);
gotoxy(10,24);
cout< <"CREDITS :";
cin>>credits;
if(credits>gross_amt)
net_amt_bef=0;
else
net_amt_bef=gross_amt-credits;
if(credits>=gross_amt)
surcharge=0;
else
surcharge=20;
net_amt_aft=net_amt_bef+surcharge;
g1.con_no=g1.con_no;
strcpy(g1.name,name);
strcpy(g1.add,add);
strcpy(g1.city,city);
g1.op_rdg=op_rdg;
g1.cl_rdg=cl_rdg;
g1.met_calls=met_calls;
g1.free_calls=free_calls;
g1.charge_calls=charge_calls;
g1.met_charge=met_charge;
g1.rent=rent;
g1.debits=debits;
g1.tax=tax;
g1.credits=credits;
g1.gross_amt=gross_amt;
g1.surcharge=surcharge;
g1.net_amt_bef=net_amt_bef;
g1.net_amt_aft=net_amt_aft;
fin.write((char*)&g1,sizeof(g1));
goto kk;
}
}while(fin);
kk:setfillstyle(1,LIGHTMAGENTA);
bar(0,0,679,679);
setfillstyle(1,LIGHTCYAN);
bar(35,200,550,250);
setcolor(BLUE);
settextstyle(1,0,3);
outtextxy(80,220,“RECORD OF THIS PERSON IS MODIFIED”);
delay(4000);
setfillstyle(1,0);
goto u;
}
//FOR EXIT
else
{
exit(0);
}
u:fin.close();
bar(0,0,680,480);
goto i;
y:setfillstyle(1,LIGHTMAGENTA);
bar(0,0,679,679);
settextstyle(TRIPLEX_FONT,0,3);
setfillstyle(1,LIGHTCYAN);
bar(150,200,490,245);
setcolor(BLUE);
outtextxy(210,220,“RECORD NOT FOUND”);
setfillstyle(1,0);
fin.close();
delay(2000);
goto u;
}
void proj_name(void)
{
fflush(stdin);
int midx,midy;
midx=getmaxx()/2;
midy=getmaxy()/2;
int i,j;
setcolor(RED);
setlinestyle(1,0,3);
setfillstyle(1,CYAN);
bar(2,1,660,660);
rectangle(2,1,660,660);
setcolor(RED);
setfillstyle(1,WHITE);
bar(25,75,575,425);
rectangle(25,75,575,425);
setfillstyle(1,CYAN);
bar(50,100,550,400);
rectangle(50,100,550,400);
setcolor(RED);
setfillstyle(1,WHITE);
bar(75,125,525,375);
rectangle(75,125,525,375);
setcolor(RED);
setfillstyle(1,CYAN);
bar(100,150,500,350);
rectangle(100,150,500,350);
setcolor(RED);
settextstyle(0,0,1);
settextstyle(1,0,6);
settextjustify(CENTER_TEXT,CENTER_TEXT);
for(i=170;i< =172;i++)
{
sleep(1);
outtextxy(291,i, “TELEPHONE”);
outtextxy(301,i+70, “ BILLING “);
outtextxy(331,i+140,“SYSTEM “);
}
}
void created(void)
{
fflush(stdin);
setfillstyle(1,LIGHTCYAN);
rectangle(2,1,660,660);
bar(2,1,660,660);
setcolor(RED);
setlinestyle(1,0,3);
settextstyle(1,0,8);
settextjustify(LEFT_TEXT,TOP_TEXT);
line(10,110,380,110);
outtextxy(10,20,“C”);
settextstyle(4,0,8);
outtextxy(47,20,“reated By:-”);
settextstyle(1,0,6);
settextjustify(LEFT_TEXT,CENTER_TEXT);
outtextxy(275,250,“MOHIT & ROHIT”);
sleep(1);
sleep(1);
clrscr();
}