Calculate Electric Energy Bill

#include<stdio.h>

#include<conio.h>

void main()

{

float r,a=2.5,b=3.5,c=1.5;

clrscr();

printf(“enter the readings\n”);

scanf(“%f”,&r);

if(r>=200)

printf(“rupees=%f”,r*b);

else if((r>=100)&&(r<200))

printf(“rupees=%f”,r*a);

else

printf(“rupees=%f”,r*c);

getch();

}

Output:

enter the readings

140

rupees=350