Q-6: Write a program to calculate and print electricity bill for consumers, given the following information: service number, previous meter reading, and current reading.

#include<stdio.h>

#include<conio.h>

void main()

{

                int pre,c,sn;

                float bill_amt,pre_amt,unit;

                clrscr();

                printf("\t\tWelcome To Kolkata Electricity Board\n");

                printf("\n\n ENTER SERVICE NUMBER:");

                scanf("%d",sn);

                printf("\nENTER THE PREVIOUS MONTH READING UNIT USED:");

                scanf("%d",&pre);

                printf("\nENTER THE CURRENT MONTH READING UNIT USED:");

                scanf("%d",&c);

                                pre_amt=pre*2.5;

                                bill_amt=c*2.5;

                printf("\nCustomer With SERVICE NUMBER:%d",sn);

                printf("\n\t\tCustomer's Previous Bill Amount:%f",pre_amt);

                printf("\n\t\tCustomer's Current Bill Amount:%f",bill_amt);

                getch();

}