找不到C++中兩個項目之間的差異

Question

讓我通過說我仍然對C++非常陌生並希望儘可能簡單。我在數學上也很糟糕。

大多數情況下，我正在查看是否有人能夠幫助我的代碼，因此它總是會給出正確的結果。除了在一種情況下，我主要是通過它來做我想做的事情。

我的代碼試圖找出有多少熱狗weiners軟件包以及某人購買了多少熱狗包。然後它會告訴用戶他們可以製作多少熱狗，以及他們會有多少剩菜或小麪包。假設一個包weiners包含12和包子的包中包含8，這就是我來了這麼遠：

#include <iostream> 
#include <cmath> 

using namespace std; 

void hotdog(int a, int b){  //a = weiner packages, b = bun packages 
    int weiners = 12 * a; 
    int buns = 8 * b; 
    int total = (weiners + buns) - (weiners - buns); 
    int leftOverWeiners = total % weiners; 
    int leftOverBuns = total % buns; 
    int totalHotDogs = total/2; 

    cout << "You can make " << totalHotDogs << " hotdogs!" << endl; 

    if (leftOverWeiners > 0){ 
     cout << "You have " << leftOverWeiners << " weiners left over though." << endl; 
    }else if (leftOverBuns > 0){ 
     cout << "You have " << leftOverBuns << " buns left over though." << endl; 
    } 
} 

int main(){ 
    int a; 
    int b; 

    cout << "Let's see how many hotdogs you can make!" << endl; 
    cout << "How many weiner packages did you purchase?: "; 
    cin >> a; 
    cout << "How many bun packages did you purchase?: "; 
    cin >> b; 

    hotdog(a, b); 

    return 0; 
} 

有了這個，我總能得到正確的答案，如果包子到weiners比例是相同的，或者如果麪包比麪包更多。

由於我設置了總數和/或leftOverBns（第9,11行）的方式，因此我將永遠無法得到有多少剩餘小包的正確答案。我知道，如果不是修改我當前的代碼的方法，我必須有一個更簡單的方法來做到這一點，但我很難過。

我知道我留下了幾乎零符號，所以如果你想要一些請讓我知道！

Answer 1

#include <iostream> 

void hotdog(int weinerspackages, int bunspackages){ 
    const int weinersPerPackage = 12; 
    const int bunsPerPackage = 8; 
    const int totalweiners = weinerspackages * weinersPerPackage; 
    const int totalbuns = bunspackages * bunsPerPackage; 
    int leftoverweiners = 0; 
    int leftoverbuns = 0; 
    int amountOfHotdogs = 0; 

    if(totalweiners > totalbuns){ 
     leftoverweiners = totalweiners - totalbuns; 
     amountOfHotdogs = totalbuns; 
     leftoverbuns = 0; 
    } 
    else if(totalbuns > totalweiners){ 
     leftoverbuns = totalbuns - totalweiners; 
     amountOfHotdogs = totalweiners; 
     leftoverweiners = 0; 
    } 
    else{ 
     amountOfHotdogs = totalweiners; 
     leftoverweiners = 0; 
     leftoverbuns = 0; 
    } 

    std::cout << "You can make: " << amountOfHotdogs << " Hotdogs" << std::endl; 
    std::cout << "Leftover Weiners: " << leftoverweiners << " || Leftover Buns: " << leftoverbuns << std::endl; 
} 

int main(){ 
    int PackagesW = 8; 
    int PackagesB = 12; 

    hotdog(PackagesW, PackagesB); 

    system("pause"); 
    return 0; 
} 

注：可以用更少的變量，要做到這一點，我聲明的變量，這個量，使之更容易瞭解的數字表示。

假設它只需要其中一個製作熱狗，您可以找到哪些配料是最少的，而且您可以製作的熱狗數量將受該配料數量的限制，這就是爲什麼amountOfHotdogs取小一的值。如果兩者的數量相等，則amountOfHotdogs可以佔用兩者的數量。

只有含量較大的配料纔會有剩菜，因此leftoverweiners = totalweiners - totalbuns;時totalweiners > totalbuns反之亦然。

Answer 2

你讓它太複雜了。試試這個：

if(weiners > buns) 
{ 
    cout << "You can make " << buns << " hotdogs!" << endl; 
    cout << "with " << weiners-buns << " weiners left over" << endl; 
    return; 
} 
cout << "You can make " << weiners << " hotdogs!" << endl; 
if(buns > weiners) 
{ 
    cout << "with " << buns-weiners << " buns left over" << endl; 
} 

{包子，weiners}中較小的熱狗的數量和IF-THEN塊確定功能是否會報告剩下的包子或weiners。