Fun House Solution:

#include <bits/stdc++.h>
using namespace std;

int main(){
    // #ifndef TESTING
    // freopen("input.txt", "r", stdin);
    // freopen("output.txt", "w", stdout);
    // #endif

    int houseNum = 0;
    int xSize, ySize;
    cin >> xSize >> ySize;
    do{
        char house[ySize][xSize];
        pair<int, int> pos;
        int direction;
        for(int i = 0; i < ySize; i++){
            string line;
            cin >> line;
            for(int j = 0; j < line.size(); j++){
                char c = line.at(j);
                house[i][j] = c;
                if(c == '*'){
                    pos.first = i;
                    pos.second = j;
                    if(i == 0){
                        direction = 2;
                    } else if(i == ySize - 1){
                        direction = 0;
                    } else if(j == 0){
                        direction = 1;
                    } else {
                        direction = 3;
                    }
                }
            }
        }
        while(house[pos.first][pos.second] != 'x'){
            if(house[pos.first][pos.second] == '/'){
                switch(direction){
                    case 0:
                        direction = 1;
                        break;
                    case 1:
                        direction = 0;
                        break;
                    case 2:
                        direction = 3;
                        break;
                    case 3:
                        direction = 2;
                        break;
                    default:
                        break;
                }
            } else if(house[pos.first][pos.second] == '\\'){
                switch(direction){
                    case 0:
                        direction = 3;
                        break;
                    case 1:
                        direction = 2;
                        break;
                    case 2:
                        direction = 1;
                        break;
                    case 3:
                        direction = 0;
                        break;
                    default:
                        break;
                }
            }
            switch(direction){
                case 0:
                    pos.first--;
                    break;
                case 1:
                    pos.second++;
                    break;
                case 2:
                    pos.first++;
                    break;
                case 3:
                    pos.second--;
                    break;
                default:
                    break;
            }
        }
        house[pos.first][pos.second] = '&';
        cout << "HOUSE " << ++houseNum << endl;
        for(int i = 0; i < ySize; i++){
            for(int j = 0; j < xSize; j++){
                cout << house[i][j];
            }
            cout << endl;
        }
        cin >> xSize >> ySize;
    } while(xSize > 0);
    return 0;   
}