Light Bill Including Taxes.

 #include <iostream>

using namespace std;

int main(){

    float total,sum;

    int unit,remain;

    cout<<"ENTER UNIT CHARGE  = ";

    cin>>unit;

    if (unit <= 50)

{

        total = unit * 0.5;

    }

    else 

if (unit>50)

{

    total = 50 * 0.50;

    remain = unit - 50;

   

     

if(remain>100 && remain<=200)

{

    remain = remain - 100;

    total = total + 100*0.75 + remain*1.20;

}

else 

if(remain>=1 && remain<=100)

{

total = total + remain * 0.75;

}

else 

if (remain > 200)

{

remain = remain - 200;

total = total + 100*0.75 + 100*1.20 + remain*1.50;

}

}

sum = (total/100) * 20;

total = total + sum;

cout<<"BILL WILL BE  : "<<total<<endl;

return 0;

}