How to write a c program to calculate electric bill in c programming ?
Solution:
/* Line charge = 50 tk */
/* For first 100 units, 1 unit = 5 tk */
/* For next 400 units, 1 unit = 6.5 tk */
/* For usage above 500 units, 1 unit = 8 tk */
#include <stdio.h>
int main()
{
int unit;
double cost = 100;
printf("Enter the number of units used: ");
scanf("%d", &unit);
if(unit <= 100)
cost = cost + unit * 5;
else if(unit <= 500)
cost = cost + 100*5 + (unit - 100) * 6.5;
else
cost = cost + 100*5 + 400*6.5 + (unit - 500) * 8;
printf("Total cost = %lf\n", cost);
return 0;
}