称硬币

#include<iostream>
#include<cstring>

using namespace std;
char Left[3][7];
char Right[3][7];
char result[3][7];
bool IsFake(char c, bool light);


int main()
{
    int t;
    cin >> t;
    while (t--) {
        for (int i = 0; i < 3; ++i) {
            cin >> Left[i] >> Right[i] >> result[i];
        }
        for (char c = 'A'; c <= 'L'; c++) {
            if (IsFake(c, true)) {
                cout << c << "is the counterfeit coin and it is light.\n";
                break;
            }
            else if (IsFake(c, false)) {
                cout << c << "is the counterfeit coin and it is heavy.\n";
                break;
            }
        }
    }
    return 0;
}

bool IsFake(char c, bool light)
{
    for (int i = 0; i < 3; ++i) {
        char* pLeft, * pRight;//指向天平两边的字符串
        if (light) {
            pLeft = Left[i];
            pRight = Right[i];
        }
        else {//如果假设假币是重的，则把称量结果左右对换
            pLeft = Right[i];
            pRight = Left[i];

        }
        switch (result[i][0])
        {//天平右边的情况
        case 'u':
            if (strchr(pRight, c) == NULL)
                return false;
            break;
        case 'e':
            if (strchr(pLeft, c) || strchr(pRight, c))
                return false;
            break;
        case 'd':
            if (strchr(pLeft, c) == NULL)
                return false;
            break;
        }

    }
    return true;
}