7. (20分)使用stack運用C語言實作老鼠走迷宮問題 (Maze path search)： void path() { // assume int maze[30][30] and offsets move[8] has been set in main function // typedef struct {int v; int h;} offsets; int i, row, col, next_row, next_col, dir, found = 0, top =0, mark[30][30]; typedef struct { int row; int col; int dir;} element element position, stack[100]; mark[1][1] = 1; stack[0].row = 1; stack[0].col = 1; stack[0].dir = 0; //實作以下敘述 // Use stack to get current row, col, dir // Use dir to calculate next_row, next_col // Use next_row, next_col to check this move (1) arrive exit, or // (2) become a legal move; add this move into the stack, or // (3) check other dir }