c++ - 我的决赛遇到了麻烦。代码不断循环回到我的订购菜单，不会显示我的总价

Question

<分区>

Answer 1

要使文本更具可读性，函数是您最好的 friend ，变量名也非常重要。我对您的代码进行了一些修改，以便您可以观察到它产生的巨大差异:

#include <iostream>
using namespace std;

void display_main_menu();
void display_header();

int main() {
    int selected_option;

    display_main_menu();
    cin >> selected_option;

    if (selected_option == 1) {
        while(selected_option != 0) {
            string product [50];
            string note [50];
            int qty [10];
            int price [10];
            int e;
            int totalprice = 0;

            cout <<"\nNumber of Product Name you will need: ";
            cin >> e;

            cout <<"\nFill in the order form based on above.\n";
            cout <<"Orders not mention above will be disregarded.\n\n";

            for (int counter = 0; counter < e; counter++){
                cout <<"Enter the 'Name' of the product you will buy: ";
                getline (cin, product[counter]);

                cout <<"Additional Note (Press Enter if no additional note): ";
                getline (cin, note[counter]);

                cout <<"Quantity: ";
                cin >> qty[counter] ;

                cout <<"Price: ";
                cin >> price[counter];
                system ("cls");
            }

            cout <<"Your Product's List " << endl << endl;
            for (int counter = 0; counter < e; counter++){
                cout <<"Product Name: " << product[counter] <<endl;
                cout <<"Quantity:" << qty[counter]<< endl;
                cout <<"Price: "<< price[counter] << endl <<endl;

                totalprice += (qty[counter] * price[counter]);  
                cout << "Total Price: " << totalprice;
            }

            cin >> selected_option;
            system ("cls");
        }   
    }
    return 0;
}

void display_header() {
    system ("cls");
    cout <<"\nRICE MEAL " << "DRINKS\n" <<endl;
    cout <<"Hotsilog \t-Php 45 \t" <<"Coke \t\t\t-Php 30" <<endl;
    cout <<"Tocilog \t-Php 45 \t" <<"Sprite  \t\t-Php 30" <<endl;
    cout <<"Tapsilog \t-Php 45 \t" <<"Iced Tea \t\t-Php 30" << endl;
    cout <<"Porksilog \t-Php 50 \t" <<"Coffee \t\t\t-Php 25" <<endl;
    cout <<"Chickensilog \t-Php 55 \t" <<"Bottled Water \t\t-Php 20" << endl;
}

void display_main_menu() {
    cout <<"COKE \t\t\t-Php 30 \t" ;
    cout <<" Carbonated softdrink by Coca-Cola Company in 2.5L."<<endl;

    cout <<"SPRITE  \t\t-Php 30 \t";
    cout <<" A colorless, lemon and lime-flavored soft drink in 2.5L."<<endl;

    cout <<"ICED TEA\t\t-Php 30 \t ";
    cout <<"Houseblend iced tea in 1L pitcher."<<endl;

    cout <<"COFFEE \t\t\t-Php 25 \t";
    cout << " A brewed drink prepared from roasted coffee beans in a cup."<<endl;

    cout <<"BOTTLED WATER \t\t-Php 20 \t";
    cout <<" A purified drinking water in 500mL." <<endl;
    cout <<"-----------------------------------------------------------------------------------------------------------------------" <<endl <<endl;

    cout <<"1 \t Order Now" <<endl;
    cout <<"0 \t Back" <<endl <<endl;

    cout <<"Enter the number of your choice: ";
}

你可以进一步划分它来分离功能，我没有这样做是为了不让你用指针吓到你。