4

//C program to calculate electric bill charges

#include <stdio.h>

void main()

{

    int unit;

    float amt;

    printf("Enter total units consumed: ");

    scanf("%d", &unit);

    if(unit <= 200)

    {

        amt = unit * 0.50;

    }

    else if(unit <= 400)

    {

        amt = 100 + ((unit-200)*0.60);

    }

    else if(unit <= 600)

    {

        amt = 230+ ((unit-400)*0.85);

    }

    else

    {

        amt = 390 + (unit-600);

    }

    printf("Electricity Bill = Rs. %.2f", amt);

    getch();

}