C++新手，正在做题，有些题做出来经过调试错误比较多。

Question

Program 2: Restaurant Bill

Overview

Write a program to split a restaurant bill evenly between a given number of people.

Directions

Write a tool for calculating and splitting restaurant bills. Your program should ask the user how much the bill is before tax, what percentage the sales tax is, what percentage tip they would like to add, and how many people are splitting the bill. Calculate the final cost of the bill by first adding the sales tax, then adding the tip. Find the cost per person by dividing the bill by the number provided. Print each value to the console: the bill before tax, the bill after tax, the bill after tip, and the bill per person.

The listing below shows an example of what the input and output for this program might look like. Input by the user is listed in blue.

How much is the bill? 57.75
How much is the tax (%)? 5
How much is the tip (%)? 20
How many people are paying? 3

Bill before tax: 57.75
Bill after tax: 60.64
Bill after tip: 72.76
Bill per person: 24.26

Answer 1

#include <iostream>
using namespace std;
int main()
{
float bill, tax, tip;
int n;
cout << "How much is the bill?";
cin >> bill;
cout << "How much is the tax (%)?" << endl;
cin >> tax;
cout << "How much is the tip (%)?" << endl;
cin >> tip;
cout << "How many people are paying?" << endl;
cin >> n;
cout << "Bill before tax: " << bill << endl;
cout << "Bill after tax: " << bill * (1 + tax / 100.0) << endl;
cout << "Bill after tip: " << ( bill * (1 + tax / 100.0)) * (1 + tip / 100.0) << endl;
cout << "Bill per person: " <<  ( bill * (1 + tax / 100.0)) * (1 + tip / 100.0)  / (float)n << endl;
return 0;
}