Write a C program to calculate total electricity bill switch statement

Write a C program to input electricity unit charges and calculate total electricity bill by using the switch statement according to the given condition:
For the first 50 units Rs. 0.50/unit
For the next 100 units Rs. 0.75/unit
For the next 100 units Rs. 1.20/unit
For unit above 250 Rs. 1.50/unit
An additional surcharge of 20% is added to the bill.

Flowchart of the program to calculate the total electricity bill by using the switch statement

C++ Source Code to calculate the total electricity bill switch statement

#include<iostream>
using namespace std;
int main()
{
	int unit;
	float amount,total_amount,s_charge;
	cout<<"enter the number of units you consumed"<<endl;
	cin>>unit;
	switch(unit<=50)
	{
		case 1:
			amount=unit*0.50;
			break;
			case 0:
				switch(unit<=150)
				{
					case 1:
						amount=25+(unit-50)*0.75;
						break;
						case 0:
							switch(unit<=250)
							{
								case 1:
								amount=100+(unit-150)*1.20	;
								break;
								case 0:
								amount=220+(unit-250)*1.50;
								break;
							}
						break;	
				}
			break;	
	}
	s_charge=amount*0.20;
	total_amount=amount+s_charge;
	cout<<"your total bill is Rs"<<total_amount;
}

Output

enter the number of units you consumed

100

your total bill is Rs 75

SFT (Shamil’s Flow Table )

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Program to calculate the bill in c++