Program to calculate discount based on bill of items purchased in C

Program

#include<stdio.h>
int main()
{
printf("*******************************************");
printf("\n*******************************************");
printf("\n**WAP to calculate discount based on bill**");
printf("\n**        using if else if laddar        **");
printf("\n**        Created by Sheetal Garg        **");
printf("\n**        Assistant Professor            **");
printf("\n**        Phone No:9467863365            **");
printf("\n*******************************************");
printf("\n*******************************************\n");
float price, quan, dis, bill, netpay;
printf("enter quantity and price");
scanf("%f%f",&quan, &price);
bill = quan*price;
if(bill<500)
dis=0;
else if (bill>=500 && bill<1000)
dis= bill*0.05;
else if(bill>=1000 && bill<2000)
dis= bill*0.10;
else
dis=bill*0.20;
netpay= bill-dis;
printf("you have to pay %f",netpay);
return 0;
}

Output 1 (No Discount)

*******************************************
*******************************************
**WAP to calculate discount based on bill**
**        using if else if laddar        **
**        Created by Sheetal Garg        **
**        Assistant Professor            **
**        Phone No:9467863365            **
*******************************************
*******************************************
enter quantity and price
100
2
you have to pay 200.000000

Output 2(5% Discount)

*******************************************
*******************************************
**WAP to calculate discount based on bill**
**        using if else if laddar        **
**        Created by Sheetal Garg        **
**        Assistant Professor            **
**        Phone No:9467863365            **
*******************************************
*******************************************
enter quantity and price
100
5
you have to pay 475.000000

Output 3 (10% Discount)

*******************************************
*******************************************
**WAP to calculate discount based on bill**
**        using if else if laddar        **
**        Created by Sheetal Garg        **
**        Assistant Professor            **
**        Phone No:9467863365            **
*******************************************
*******************************************
enter quantity and price
100
10
you have to pay 900.000000

Output 4(20% Discount)

*******************************************
*******************************************
**WAP to calculate discount based on bill**
**        using if else if laddar        **
**        Created by Sheetal Garg        **
**        Assistant Professor            **
**        Phone No:9467863365            **
*******************************************
*******************************************
enter quantity and price
100
20
you have to pay 1600.000000