請教一下，我的transform函式問題到底出在哪裡:D?

debug好久都還是看不懂我的作法跟chatgpt的作法差在哪...

拜託各路大神了

#include <iostream>
#include <string>
#include <math.h>
#include 
using namespace std;

int swchInt(char a)
{
    int reNum = 0;
    switch(a){
        case 'I':
        reNum = 1;
        break;
        case 'V':
        reNum = 5;
        break;
        case 'X':
        reNum = 10;
        break;
        case 'L':
        reNum = 50;
        break;
        case 'C':
        reNum = 100;
        break;
        case 'D':
        reNum = 500;
        break;
        case 'M':
        reNum = 1000;
        break;
    }
    return reNum;
}

//------------------------------------我本來的做法
// int transform(string numStr)
// {
//     int  total = 0;
//     char numa, numb = '1';
//     total += swchInt((char)numStr[0]);
//     for(char c:numStr)
//     {
//         if(numb == '1')
//         {
//             numb = c;
//         }else{
//             numa = numb;
//             numb = c;
//              if(swchInt(numa) < swchInt(numb)) total -= 2*swchInt(numa);
//         else if(swchInt(numa) >= swchInt(numb)) total += swchInt(numb);
//         }
//        }
//     return total;
// }
//------------------------------------chatgpt作法
int transform(const string& numStr) {
    int total = 0;
    int prevValue = 0;

    for (char c : numStr) {
        int currentValue = swchInt(c);

        if (currentValue > prevValue) {
            total += currentValue - 2 * prevValue; 
        } else {
            total += currentValue;
        }
        prevValue = currentValue;
    }
    return total;
}
//------------------------------------



string int_to_roman(int value)
{
     std::map romanMap = {{1,"I"},{4,"IV"},{5,"V"},{9,"IX"},{10,"X"},{40,"XL"},{50,"L"},{90,"XC"},{100,"C"},{400,"CD"},{500,"D"},{900,"CM"},{1000,"M"}};
    string romanNum = "";
    for(auto it = romanMap.rbegin(); it != romanMap.rend(); it++) 
    {
        while(value >= it->first)
        {
               
            value -= it->first;
            romanNum += it->second;
        }
    }
    return romanNum;
}

int main()
{
 string numA, numB, input, outcome = "";
   do{
        cin>>numA;
        if(numA == "#") continue;
        cin>>numB;
        if(abs(transform(numA)-transform(numB)) != 0) cout< 0 && transform(numB) > 0) cout<<"ZERO"<<endl;
     }
 return 0;
}






 

// if(swchInt(numa) < swchInt(numb)) total -= 2*swchInt(numa);

你沒有加numb

然後你的其他部分的程式碼根本無法編譯，建議之後改好一點再發問

// if(swchInt(numa) < swchInt(numb)) total -= 2*swchInt(numa);

你沒有加numb

然後你的其他部分的程式碼根本無法編譯，建議之後改好一點再發問

喔對欸，謝謝你。

抱歉當時太著急要去做其他事情，忘記要用跳脫字元結果東西被吃掉，下次會注意:D