折扣码..我哪里错了？

  • Z时代
  • 2024-01-10
  • 分类：问答

此代码旨在根据客户数量给出物品的最终价格。我已经添加了方程式，但是当它运行时，折扣和最终价格没有正确评估。如果有人知道我们在伪代码中出错的地方，这将会非常有帮助。折扣码..我哪里错了？

using namespace std; 
int main() { 
    // Variables 
    double Retail, quantity, discount1, discount2, discount3, discount4, TotalCost1, TotalCost2, TotalCost3, TotalCost4; 
    Retail = 99; 
    quantity = 0; 
    discount1 = (quantity * Retail) * .20; 
    discount2 = (quantity * Retail) * .30; 
    discount3 = (quantity * Retail) * .40; 
    discount4 = (quantity * Retail) * .50; 
    TotalCost1 = quantity - discount1; 
    TotalCost2 = quantity - discount2; 
    TotalCost3 = quantity - discount3; 
    TotalCost4 = quantity - discount4; 
    //Equations 
    cout << "Please enter the quantity of items you would like to purchase: " << endl; 
    cin >> quantity; 
    cout << "The number of items being purchased is: " << quantity << endl; 
    if (quantity <= 19) { 
     cout << "Your final price is: " << discount1 << endl; 
    } 
    if (quantity >= 20) { 
     cout << "Your final price is: " << discount2 << endl; 
    } 
    if (quantity >= 50) { 
     cout << "Your final price is: " << discount3 << endl; 
    } 
    if (quantity >= 100) { 
     cout << "Your final price is: " << discount4 << endl; 
    } 
     system("pause"); 
}

回答：

难道只是你没有被定义为除了0您计算前的折扣什么数量？我在计算之前移动了您的购买内容并获得了更好的结果（使用在线编译器）。

double Retail, quantity, discount1, discount2, discount3, discount4, TotalCost1, TotalCost2, TotalCost3, TotalCost4; 
Retail = 99; 
quantity = 0; 
//Equations 
cout << "Please enter the quantity of items you would like to purchase: " << endl; 
cin >> quantity; 
cout << "The number of items being purchased is: " << quantity << endl; 
discount1 = (quantity * Retail) * .20; 
discount2 = (quantity * Retail) * .30; 
discount3 = (quantity * Retail) * .40; 
discount4 = (quantity * Retail) * .50; 
TotalCost1 = quantity - discount1; 
TotalCost2 = quantity - discount2; 
TotalCost3 = quantity - discount3; 
TotalCost4 = quantity - discount4; 
if (quantity <= 19) { 
    cout << "Your final price is: " << discount1 << endl; 
} 
if (quantity >= 20) { 
    cout << "Your final price is: " << discount2 << endl; 
} 
if (quantity >= 50) { 
    cout << "Your final price is: " << discount3 << endl; 
} 
if (quantity >= 100) { 
    cout << "Your final price is: " << discount4 << endl; 
} 
Please enter the quantity of items you would like to purchase: 
The number of items being purchased is: 19 
Your final price is: 376.2

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