void函数数学错误

-3

#include <iostream> 

using namespace std; 

void compute_coins(int change, int quarters, int dimes, int nickels, int pennies); 
void output(int quarters, int dimes, int nickels, int pennies); 

int main() 
{ 
    int change, quarters, dimes, nickels, pennies; 
    char again = 'y'; 

    cout << "Welcome to the change dispenser!\n"; 

    while(again == 'y'){//Creating loop to allow the user to repeat the process 
    cout << "Please enter the amount of cents that you have given between 1 and 99\n"; 
    cin >> change; 
    while((change < 0) || (change >100)){//Making a loop to make sure a valid number is    inputed 
     cout << "Error: Sorry you have entered a invalid number, please try again:"; 
     cin >> change; 
    } 
    cout << change << " Cents can be given as: " << endl; 
    compute_coins(change, quarters, dimes, nickels, pennies); 
    output(quarters, dimes, nickels, pennies); 

    cout << "Would you like to enter more change into the change dispenser? y/n\n";//prompts the user to repeat this process 
    cin >> again; 
    } 
    return 0; 
} 


void compute_coins(int change, int quarters, int dimes, int nickels, int pennies) {//calculation to find out the amount of change given for the amount inpuied 
    using namespace std; 
    quarters = change/25; 
    change = change % 25; 
    dimes = change/10; 
    change = change % 10; 
    nickels = change/5; 
    change = change % 5; 
    pennies = change; 
    return ; 
} 

void output(int quarters, int dimes, int nickels, int pennies){ 
    using namespace std; 
    cout << "Quarters = " << quarters << endl; 
    cout << "dimes = " << dimes << endl; 
    cout << "nickels = " << nickels << endl; 
    cout << "pennies = " << pennies << endl; 
}

对不起，代码没有转移好，我对这个网站仍然很新。但是，我在季度，硬币，镍币和便士上得到了疯狂的数字。我这样做一次了，它的工作很好，但我没有用空洞的功能，所以我不得不重做，我搞砸自己了，我被卡住。任何帮助感激！void函数数学错误

来源

2013-10-07 Snobbysteven

C++是通过按值，除非指定的参考。 – chris

什么*具体*会出错？你到目前为止已经尝试了哪些*具体内容？我们很乐意帮忙，但没有一些指导它为我们解答你的问题很难。你能否用更多的细节更新你的问题？ – templatetypedef

你的编译器能够提供有用的警告，如果你让它：http://coliru.stacked-crooked.com/a/6449ef3601fb9ef4 – chris

void compute_coins(int change, int quarters, int dimes, int nickels, int pennies);

这意味着你只需要传递给函数的值的副本。因此，无论你那倒有您在传递的实际值有任何影响的函数中做。

void compute_coins(int &change, int &quarters, int &dimes, int &nickels, int &pennies);

这意味着，你给实际变量，而不仅仅是一个副本。无论你在做参数的变化实际上是对您在传递变量来完成。

查找refences和指针。

来源

2013-10-07 07:07:38 Araw

void函数数学错误

回答

相关问题