C Program to 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

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