我试图保持一共出售的咖啡杯,我必须使用用户定义的功能来完成它。我已经尝试了附加代码的许多变体,但似乎没有任何工作。我究竟做错了什么?此外,我是C ++的新手,所以这就是为什么它看起来很业余!
#include <iostream>
#include <iomanip>
#include <fstream>
#include <string>
using namespace std;
const int SM_OZ = 8;
const int MD_OZ = 12;
const int LG_OZ = 16;
const double SM_PRICE = 1.19;
const double MD_PRICE = 1.49;
const double LG_PRICE = 1.89;
const double TAX = .0825;
void amtSold(int &smtCup, int &mdtCup, int &lgtCup);
int main()
{
int selection;
int smCup;
int mdCup;
int lgCup;
int smtCup;
int mdtCup;
int lgtCup;
smCup = 0;
mdCup = 0;
lgCup = 0;
do
{
cout << "COFFEE SHOP" << endl;
cout << "1. Sell Coffee" << endl;
cout << "2. Total Number of Cups Sold" << endl;
cout << "3. Total Amount of Coffee Sold" << endl;
cout << "4. Total Amount of Money made" << endl;
cout << "0. Exit" << endl;
cout << "Type a number to continue: ";
cin >> selection;
cout << endl;
//loop through the solutions based on the user's selection
switch (selection)
{
case 1:
cout << "How many small cups of coffee: ";
cin >> smCup;
cout << "How many medium cups of coffee: ";
cin >> mdCup;
cout << "How many large cups of coffee: ";
cin >> lgCup;
system("cls");
cout << fixed << setprecision(2) << endl;
//Sale Coffee Receipt Page
cout << "COFFEE SHOP" << endl;
cout << "SIZE" << setw(21) << "Number" << setw(18) << "Price" << setw(18) << "Total" << endl;
cout << "Small: " << setw(18) << smCup << setw(18) << SM_PRICE << setw(18) << smCup*SM_PRICE << endl;
cout << "Medium: " << setw(17) << mdCup << setw(18) << MD_PRICE << setw(18) << mdCup*MD_PRICE << endl;
cout << "Large: " << setw(18) << lgCup << setw(18) << LG_PRICE << setw(18) << lgCup*LG_PRICE << endl;
cout << "Subtotal: " << setw(51) << (smCup*SM_PRICE)+(mdCup*MD_PRICE)+(lgCup*LG_PRICE) << endl;
cout << "Tax: (8.25%)" << setw(49) << ((smCup*SM_PRICE) + (mdCup*MD_PRICE) + (lgCup*LG_PRICE))*TAX << endl;
cout << "Total: " << setw(54) << ((smCup*SM_PRICE) + (mdCup*MD_PRICE) + (lgCup*LG_PRICE))+(((smCup*SM_PRICE) + (mdCup*MD_PRICE) + (lgCup*LG_PRICE))*TAX) << endl;
cout << endl;
cout << endl;
break;
case 2:
//Total Number of Cups Sold
cout << "REPORT - NUMBER OF COFFEE CUPS SOLD" << endl;
amtSold(smtCup, mdtCup, lgtCup);
cout << "SIZE" << setw(21) << "Number" << endl;
cout << "Small: " << setw(18) << smCup << endl;
cout << "Medium: " << setw(17) << mdCup << endl;
cout << "Large: " << setw(18) << lgCup << endl;
cout << endl;
cout << endl;
break;
case 3:
//Total Amount of Coffee Sold
cout << "REPORT - AMOUNT OF COFFEE SOLD" << endl;
cout << "SIZE" << setw(21) << "Number" << setw(18) << "OZ" << endl;
cout << "Small: " << setw(18) << smCup << setw(18) << smCup*SM_OZ << endl;
cout << "Medium: " << setw(17) << mdCup << setw(18) << mdCup*MD_OZ << endl;
cout << "Large: " << setw(18) << lgCup << setw(18) << lgCup*LG_OZ << endl;
cout << "Total: " << setw(36) << (smCup*SM_OZ) + (mdCup*MD_OZ) + (lgCup*LG_OZ) << endl;
cout << endl;
cout << endl;
break;
case 4:
//Total Amount of Money made
cout << "COFFEE SHOP - REPORT MONEY MADE" << endl;
cout << "SIZE" << setw(21) << "Number" << setw(18) << "Price" << setw(18) << "Total" << endl;
cout << "Small: " << setw(18) << smCup << setw(18) << SM_PRICE << setw(18) << smCup*SM_PRICE << endl;
cout << "Medium: " << setw(17) << mdCup << setw(18) << MD_PRICE << setw(18) << mdCup*MD_PRICE << endl;
cout << "Large: " << setw(18) << lgCup << setw(18) << LG_PRICE << setw(18) << lgCup*LG_PRICE << endl;
cout << "Subtotal: " << setw(51) << (smCup*SM_PRICE) + (mdCup*MD_PRICE) + (lgCup*LG_PRICE) << endl;
cout << "Tax: (8.25%)" << setw(49) << ((smCup*SM_PRICE) + (mdCup*MD_PRICE) + (lgCup*LG_PRICE))*TAX << endl;
cout << "Total: " << setw(54) << ((smCup*SM_PRICE) + (mdCup*MD_PRICE) + (lgCup*LG_PRICE)) + (((smCup*SM_PRICE) + (mdCup*MD_PRICE) + (lgCup*LG_PRICE))*TAX) << endl;
cout << endl;
cout << endl;
break;
case 0:
system("cls");
break;
default:
//notify the user that an invalid selection has been inputted
cout << "You have made an invalid selection. Please choose a number from the list." << endl;
cout << endl;
}
} while (selection != 0);
system("pause");
return 0;
}
void amtSold(int &smtCup, int &mdtCup, int &lgtCup)
{
int smCup;
int mdCup;
int lgCup;
smCup = 0;
mdCup = 0;
lgCup = 0;
smtCup += smCup;
mdtCup += mdCup;
lgtCup += lgCup;
}
答案 0 :(得分:1)
您可能知道,您没有跟踪您销售的每种尺寸的咖啡杯数量(即smtCup,mdtCup和lgtCup)。
我假设这些变量意味着每个尺寸的杯子总数,您可能希望在变量声明步骤中添加一些注释。您需要将变量初始化为0:
int smtCup = 0;
int mdtCup = 0;
int lgtCup = 0;
由于这是一个相当简单的程序,您可以在不使用amtSold函数的情况下执行累积,因此您可以删除它。
然后,在switch语句的情况1中,每次更新值时都需要更新smtCup,mdtCup和lgtCup。请注意,smCup,mdCup和lgCup仅用于此程序中的输入。
cout << "How many small cups of coffee: ";
cin >> smCup;
cout << "How many medium cups of coffee: ";
cin >> mdCup;
cout << "How many large cups of coffee: ";
cin >> lgCup;
smtCup += smCup;
mdtCup += mdCup;
lgtCup += lgCup;
从现在开始,您可以通过在其他情况下调用smtCup,mdtCup和lgtCup来打印出小,中,大杯的总数!在案例2-4中将smCup,mdCup和lgCup更改为smtCup,mdtCup和lgtCup。希望这可以帮助!
编辑:无法发表评论,所以我只想说你们在这里欢迎!
答案 1 :(得分:0)
谢谢KTing!令人失望的是,我对我的代码的早期版本更接近正确答案。我无法弄清楚为什么它不会初始化,所以我开始绝望并尝试我95%肯定无法工作的事情。我最终得到了以下解决方案。
#include <iostream>
#include <iomanip>
#include <fstream>
#include <string>
using namespace std;
//Constant for size of cup of coffee
const int SM_OZ = 8;
const int MD_OZ = 12;
const int LG_OZ = 16;
//Constant for price of cup of coffee and Tax
const double SM_PRICE = 1.19;
const double MD_PRICE = 1.49;
const double LG_PRICE = 1.89;
const double TAX = .0825;
int main()
{
//declare and initialize the variables for the individual cups of coffee
int selection;
int smCup = 0;
int mdCup = 0;
int lgCup = 0;
//declare and initialize the variables for the total cups of coffee
int smtCup = 0;
int mdtCup = 0;
int lgtCup = 0;
do
{
//get input from user as to what they want to do
cout << "COFFEE SHOP" << endl;
cout << "1. Sell Coffee" << endl;
cout << "2. Total Number of Cups Sold" << endl;
cout << "3. Total Amount of Coffee Sold" << endl;
cout << "4. Total Amount of Money made" << endl;
cout << "0. Exit" << endl;
cout << "Type a number to continue: ";
cin >> selection;
cout << endl;
//loop through the solutions based on the user's selection
switch (selection)
{
case 1:
//get the number of cups of coffee from the user
cout << "How many small cups of coffee: ";
cin >> smCup;
cout << "How many medium cups of coffee: ";
cin >> mdCup;
cout << "How many large cups of coffee: ";
cin >> lgCup;
//get the total cups of coffee and store it as a variable
smtCup += smCup;
mdtCup += mdCup;
lgtCup += lgCup;
system("cls");
cout << fixed << setprecision(2) << endl;
//Sale Coffee Receipt Page
cout << "COFFEE SHOP" << endl;
cout << "SIZE" << setw(21) << "Number" << setw(18) << "Price" << setw(18) << "Total" << endl;
cout << "Small: " << setw(18) << smCup << setw(18) << SM_PRICE << setw(18) << smCup*SM_PRICE << endl;
cout << "Medium: " << setw(17) << mdCup << setw(18) << MD_PRICE << setw(18) << mdCup*MD_PRICE << endl;
cout << "Large: " << setw(18) << lgCup << setw(18) << LG_PRICE << setw(18) << lgCup*LG_PRICE << endl;
cout << "Subtotal: " << setw(51) << (smCup*SM_PRICE)+(mdCup*MD_PRICE)+(lgCup*LG_PRICE) << endl;
cout << "Tax: (8.25%)" << setw(49) << ((smCup*SM_PRICE) + (mdCup*MD_PRICE) + (lgCup*LG_PRICE))*TAX << endl;
cout << "Total: " << setw(54) << ((smCup*SM_PRICE) + (mdCup*MD_PRICE) + (lgCup*LG_PRICE))+(((smCup*SM_PRICE) + (mdCup*MD_PRICE) + (lgCup*LG_PRICE))*TAX) << endl;
cout << endl;
cout << endl;
break;
case 2:
//Total Number of Cups Sold
cout << "REPORT - NUMBER OF COFFEE CUPS SOLD" << endl;
cout << "SIZE" << setw(21) << "Number" << endl;
cout << "Small: " << setw(18) << smtCup << endl;
cout << "Medium: " << setw(17) << mdtCup << endl;
cout << "Large: " << setw(18) << lgtCup << endl;
cout << endl;
cout << endl;
break;
case 3:
//Total Amount of Coffee Sold
cout << "REPORT - AMOUNT OF COFFEE SOLD" << endl;
cout << "SIZE" << setw(21) << "Number" << setw(18) << "OZ" << endl;
cout << "Small: " << setw(18) << smtCup << setw(18) << smtCup*SM_OZ << endl;
cout << "Medium: " << setw(17) << mdtCup << setw(18) << mdtCup*MD_OZ << endl;
cout << "Large: " << setw(18) << lgtCup << setw(18) << lgtCup*LG_OZ << endl;
cout << "Total: " << setw(36) << (smtCup*SM_OZ) + (mdtCup*MD_OZ) + (lgtCup*LG_OZ) << endl;
cout << endl;
cout << endl;
break;
case 4:
//Total Amount of Money made
cout << "COFFEE SHOP - REPORT MONEY MADE" << endl;
cout << "SIZE" << setw(21) << "Number" << setw(18) << "Price" << setw(18) << "Total" << endl;
cout << "Small: " << setw(18) << smtCup << setw(18) << SM_PRICE << setw(18) << smtCup*SM_PRICE << endl;
cout << "Medium: " << setw(17) << mdtCup << setw(18) << MD_PRICE << setw(18) << mdtCup*MD_PRICE << endl;
cout << "Large: " << setw(18) << lgtCup << setw(18) << LG_PRICE << setw(18) << lgtCup*LG_PRICE << endl;
cout << "Subtotal: " << setw(51) << (smtCup*SM_PRICE) + (mdtCup*MD_PRICE) + (lgtCup*LG_PRICE) << endl;
cout << "Tax: (8.25%)" << setw(49) << ((smtCup*SM_PRICE) + (mdtCup*MD_PRICE) + (lgtCup*LG_PRICE))*TAX << endl;
cout << "Total: " << setw(54) << ((smtCup*SM_PRICE) + (mdtCup*MD_PRICE) + (lgtCup*LG_PRICE)) + (((smtCup*SM_PRICE) + (mdtCup*MD_PRICE) + (lgtCup*LG_PRICE))*TAX) << endl;
cout << endl;
cout << endl;
break;
case 0:
system("cls");
break;
default:
//notify the user that an invalid selection has been inputted
cout << "You have made an invalid selection. Please choose a number from the list." << endl;
cout << endl;
}
//loop through if the user is still making a valid selection
} while (selection != 0);
system("pause");
return 0;
}