Write a program to calculate electricity bill

Write a program to calculate electricity bill. Read the starting and ending meter reading. 

The charges are as follows.

No. of units consumed Rates in (Rs.)

void main()
{
int initial,final,consumed;
float total;
clrscr();
printf(“\n Initial & Final Readings :”);
scanf(“%d %d”, &initial, &final);
consumed = final-initial;
if(consumed>=200 && consumed<=500)
total=consumed * 3.50;
else if(consumed>=100 && consumed<=199)
total= consumed * 2.50;
else if(consumed<100)
total=consumed*1.50;
printf(“Total bill for %d unit is %f”,consumed,total);
getche();
}

OUTPUT: 

Initial & Final Readings : 800 850

Total bill for 50 unit is 75.000000