c - C中的右手迷宫遍历

Question

这是我的第一个问题，是的，这是一个“家庭作业”作业。我已经为此工作了几个小时，但无法使算法正常工作。我编写的程序应该包含一个函数，该函数接受一个 12 x 12 数组并查找到末尾的路径。 main 函数找到迷宫的起点并将其更改为“x”以表示“玩家”的位置。然后主函数调用接受数组的 mazePrint 函数，在清除屏幕后将其打印出来。然后它调用接受数组的 mazeTraversal 函数。 mazeTraversal 的第一部分尝试定位“x”的位置并将其替换为“.”。下一部分应该确定“x”面向哪个方向。我用 4、5、6 和 8(西、南、东、北(看数字键盘))来表示它面向的方向。根据它面对的方式，mazeTraversal 尝试确定是否有一条开放路径向右，然后在前面，然后在左边，然后在后面，然后将 X 放在那个位置并改变 x 的方式面对。当我运行程序时，第二次移动后出现问题。感谢您的帮助，如果这不是提出此类问题的地方，我们深表歉意。

#include <stdio.h>
#include <stdlib.h>

void mazePrint(char *maze[12][12]);
void mazeTraversal(char *maze[12][12]);
static int face = 6;

main()
{
    int i = 0;
    int j = 0; 
    int k = 0;
    int start;
    int xpos;

    char *mazeone[12][12] = {
       //0///1///2///3///4///5///6///7///8///9///10//11///
        "#","#","#","#","#","#","#","#","#","#","#","#",//0
        "#",".",".",".","#",".",".",".",".",".",".","#",//1
        ".",".","#",".","#",".","#","#","#","#",".","#",//2
        "#","#","#",".","#",".",".",".",".","#",".","#",//3
        "#",".",".",".",".","#","#","#",".","#",".",".",//4
        "#","#","#","#",".","#",".","#",".","#",".","#",//5
        "#","#",".","#",".","#",".","#",".","#",".","#",//6
        "#","#",".","#",".","#",".","#",".","#",".","#",//7
        "#",".",".",".",".",".",".",".",".","#",".","#",//8
        "#","#","#","#","#","#",".","#","#","#",".","#",//9
        "#",".",".",".",".",".",".","#",".",".",".","#",//10
        "#","#","#","#","#","#","#","#","#","#","#","#",};//11

    for (i = 0; i <12; i++)
        if (mazeone[i][0] == "." ) {
            start = i; 
            mazeone[start][0] = "x";
            xpos = start;
            break;
        }

    printf("X is the starting point.\n");
    printf("Press Space Bar to watch the X move.\n\n\n");
    getchar();
    mazePrint(mazeone);
    getchar();
    return 0;
}

void mazePrint(char *maze[12][12])
{   
    int x = 0; 
    int y = 0;

    system("cls");
    for (x = 0; x < 12; x++) {
        for (y = 0; y < 12; y++) {
            printf("%s", maze[x][y]);
        }
        printf("\n"); 
    }
    getchar(); 
    mazeTraversal(maze);
}

void mazeTraversal(char *maze[12][12])
{
    int x = 0; 
    int y = 0;

    for (x = 0; x < 12; x++) {
        for (y = 0; y < 12; y++) {
            if (maze[y][x] == "x")
                break;
        } 
        if(maze[y][x] == "x")
            break;
    }

    for (y = 0; y < 12; y++) {
        for (x = 0; x < 12; x++) {
            if (maze[y][x] == "x")
                break;
        } 
        if (maze[y][x] == "x")
            break;
    }

    maze[y][x] = ".";

    switch (face) {
        case 6:{
            if (maze[y][x-1] == ".") {
                maze[y][x-1] = "x"; 
                face = 5;
            } else if (maze[y + 1][x] == ".") {
                maze[y + 1][x] = "x"; 
                face = 6;
            } else if (maze[y][x+1] == ".") {
                maze[y][x+1] = "x";
                face = 8;
            } else if (maze[y - 1][x] == ".") {
                maze[y - 1][x] = "x"; 
                face = 4;
            }
        }
        case 8:{
            if (maze[y + 1][x] == ".") {
                maze[y + 1][x] = "x"; 
                face = 6;
            } else if (maze[y][x+1] == ".") {
                maze[y][x+1] = "x";
                face = 8;
            } else if (maze[y - 1][x] == ".") {
                maze[y - 1][x] = "x"; 
                face = 4;
            } else if (maze[y][x-1] == ".") {
                maze[y][x-1] = "x"; 
                face = 5;
            }
        }
        case 4:{
            if (maze[y][x+1] == ".") {
                maze[y][x+1] = "x";
                face = 8;
            } else if (maze[y - 1][x] == ".") {
                maze[y - 1][x] = "x"; 
                face = 4;
            } else if (maze[y][x-1] == ".") {
                maze[y][x-1] = "x"; 
                face = 5;
            } else if (maze[y + 1][x] == ".") {
                maze[y + 1][x] = "x"; 
                face = 6;
            }
        }
        case 5:{
            if (maze[y - 1][x] == ".") {
                maze[y - 1][x] = "x";
                face = 4;
            } else if (maze[y][x-1] == ".") {
                maze[y][x-1] = "x"; 
                face = 5;
            } else if (maze[y + 1][x] == ".") {
                maze[y + 1][x] = "x"; 
                face = 6;
            } else if (maze[y][x+1] == ".") {
                maze[y][x+1] = "x";
                face = 8;
            }
        }
    }

    mazePrint(maze);
}

Answer 1

在每个 case: 代码块之后，您缺少 switch(face) 中的 break; 语句。如果没有 break; 语句，您的代码将落到下一个 case: 中，这不是您想要的。