Program 4-SKS

//C Program to calculate electricity charges
#include<stdio.h>
#include<stdlib.h>
void main()
{
	char name[50];
	float units, total, excess;
	printf("Enter the name of the consumer: ");
	gets(name);
	printf("\nEnter the units consumed: ");
	scanf("%f",&units);
	if(units>=0 && units<=200)
	{
		total=(units*0.8)+100;
	}
	else if(units>200 && units<=300)
	{
		excess=units-200;
		total=(200*0.8)+(excess*0.9)+100;
	}
	else if(units>300)
	{
		excess=units-300;
		total=(200*0.8)+(100*0.9)+(excess*1)+100;
	}
	else
	{
		printf("\nEnter valid units");
		exit(0);
	}
	if(total>400)
	{
		total=total+(0.15*total);
	}
	printf("\nConsumer Name\tUnits Consumed\tTotal Amount\n%s\t%f\t%f",name,units,total);
}