Math Solve(Game C++)

#include <iostream>
#include <cstdlib>
#include <time.h>
#include <windows.h>
#include <ctime>
#include <conio.h>
using namespace std;

// W,A,S,D - move
//You need solve a math problem

// coordinates of map
int x=3,y=3;
/////////////////

// coordinates our character
int xx=0,yy=0;
////////////////////////////

// coordinates solving math
int mathX=0,mathY=0;
///////////////////////////

//some variables use in functions
int a=0;
int b=0;
int temp=0;
bool dontMath = false;
int Points=0;


void spr(int tab[4][4]){
    for(int i=0;i<=x;i++){
        for(int j=0;j<=y;j++){
            tab[i][j]=i+j+1;
            if(xx == i && yy==j){temp=tab[i][j];tab[i][j]=0;}
            if(mathX == i && mathY==j){tab[i][j]=0;}
            cout << tab[i][j]<<" ";
        }cout<<endl;
    }

}

void input(){
    char znak;
    //cout << "Number: "<<temp<<endl; // debugging numbers
    cout << "Points: "<<Points<<endl;
    znak = getch();
    if(znak == 119)xx--;
    else if(znak == 97)yy--;
    else if(znak == 100)yy++;
    else if(znak == 115)xx++;
}
void logic(){
    if(xx < 0){
        xx=0;
    }else if(xx > x){
        xx=x;
    }else if(yy < 0){
        yy=0;
    }else if(yy > y){
        yy=y;
    }

    if(xx == mathX && yy == mathY){
        int elo;
        int pwin=0;
        int good=0;
        mathX=rand()%3;
        mathY=rand()%3;


        if(dontMath == true){
        elo=rand()%30+1;
        cout << "what is "<<elo<< " + " << elo << "?\n";
        cout << "Enter: ";
        cin >> good;
        pwin=elo+elo;
        if(good == pwin){
            system("cls");
            Points+=1;
            cout << "you solve a math!\n";
        }else cout << "bad.. u dont solve a math is "<<pwin<<" !"<<endl;
      }
    }
    dontMath = true;
}
int main(){
    srand(time(NULL));

    // map 4x4
    int tab[4][4];

    // at the beginning we randomize the numbers x y
    // of the math solving if player position == math solve
    // we get to solve a math problem...
    mathX=rand()%3;
    mathY=rand()%3;

    while(true){
    system("cls");
    logic();
    spr(tab);
    input();

    Sleep(25);

}

    return 0;
}