How do I make the player move?

#include <iostream>
#include <cstdlib> //rand + srand
#include <ctime>   //time
#include <cmath>   //math problems
#include <conio.h>  //keys
#include <string>
using namespace std;

//5 by 5 maze
const char HEIGHT = 7, WIDTH = 7;
unsigned char maze[WIDTH][HEIGHT] = {
{'#','#','#','#','#','#','#'},
{'#',' ','#','#','#','#','#'},
{'#',' ',' ','#',' ',' ','#'},
{'#','#',' ',' ',' ',' ','#'},
{'#',' ','#',' ',' ',' ','#'},
{'#',' ',' ',' ',' ',' ','#'},
{'#','#','#','#','#','#','#'},
};

struct barrier {    //use for barriers later
    int x;
    int y;
}; 

void riddle(int x, int y) { //function to generate riddles when met with barriers
    srand(time(0)); //seed srand with the current time
    int res = rand() % 3 + 1; //generate random number from 1-3
    int ans;    //recieve answer from player

    switch(res) {   //basic math problems!
        case 1 :
            cout << "what's (13*3) ?\n";
            cin >> ans;
            if(ans == 39)   //for correct answer
                maze[x][y] = ' ';   //clear the way
            break;

        case 2 : 
            cout << "what's 2^7?\n";
            cin >> ans;
            if(ans == 128)  //for correct answer
                maze[x][y] = ' ';   //clear the way
            break;

        case 3 : 
            cout << "what's 2*24?\n";
            cin >> ans;
            if(ans == 48)   //for correct answer
                maze[x][y] = ' ';   //clear the way
            break;
    }
}

bool on = true; //for the while loop

const int FRAME_RATE = (int) 1000 / 30; //frame rate of 30 fps

void slp(unsigned int t) { //wait for 't' milliseconds
    clock_t GoalTime = clock() + t; //current time plus t
    while(clock() < GoalTime);
}

void printer() { //print the maze
    for(int x = 0; x < WIDTH; x++) {
        cout << endl;
        for(int y = 0; y < HEIGHT; y++) {
            cout << maze[x][y];
        }
    }
}

void game() {
    //important variables :
    char move; //player choice of move
    int Xplayer = 1, Yplayer = 1; //player start position
    int Xfinish = 5, Yfinish = 5; //finish line position
    
    barrier b1, b2;
    b1.x = 2; //first barrier position
    b1.y = 2; 
    b2.x = 3; //second barrier position
    b2.y = 4;

    char player = 'O'; //character to represent the player
    char bar1 = 'X', //character rep. of barriers
         bar2 = 'X';
    char finish = '*'; //character rep. of finish line

    //loop for the game to  run
    while(on) {
        maze[Xplayer][Yplayer] = player;    //player placed in respective coordinates
        maze[Xfinish][Yfinish] = finish;    //finish line placed in respective coordinates
        maze[b1.x][b1.y] = bar1;    //first barrier placed in coordinates
        maze[b2.x][b2.y] = bar2;    //second barrier in coordinates

        printer();  //print maze
        cout << endl;
        cout << "move : " << endl;

        for(; ;) {
                move = getchar(); //get movement choice as input 
                switch(move) {  //different scenarios of moves chosen by player
                    case 'u' :  //player wants to go up
                        if(maze[Xplayer][Yplayer-1] != '#' && maze[Xplayer][Yplayer-1] == ' ') {
                            maze[Xplayer][Yplayer] = ' ';
                            Yplayer--;
                        }
                        break;

                    case 'd' :  //player wants to go down
                        if(maze[Xplayer][Yplayer+1] != '#' && maze[Xplayer][Yplayer+1] == ' ') {
                            maze[Xplayer][Yplayer] = ' ';
                            Yplayer++;
                        }
                        break;

                    case 'l' :  //player wants to go left
                        if(maze[Xplayer-1][Yplayer] != '#' && maze[Xplayer-1][Yplayer] == ' ') {
                            maze[Xplayer][Yplayer] = ' ';
                            Xplayer--;
                        }
                        break;

                    case 'r' :  //player wants to go right
                        if(maze[Xplayer+1][Yplayer] != '#' && maze[Xplayer+1][Yplayer] == ' ') {
                            maze[Xplayer][Yplayer] = ' ';
                            Xplayer++;
                        }
                        break;

                    case 'q' : //player chooses to quit
                        exit(0);
                        break;
                }

            if(Xplayer == b1.x && Yplayer == b1.y) {    //player meeting the first barrier 
                cout << "barrier! solve riddle to continue!...\n"; //message
                riddle(Xplayer, Yplayer);   //call function for current position [2,2]
            }

            else if(Xplayer == b2.x && Yplayer == b2.y) { //player meeting with the second barrier
                cout << "barrier! solve riddle to continue!...\n";
                riddle(Xplayer, Yplayer); //call function for current position [3,4]
            }

            if(Xplayer == 5 && Yplayer == 5) {  //player reaches finish line
                cout << "success! your score is : " << //"insert score"
                "press q to quit\n";
            }
        }

        slp(FRAME_RATE);    //stop 30 ms
        system("CLS");  //clear screen
    }
}

int main() {
    game();
    return 0;
}