Some task

#include <stdio.h>
#include <cstdlib>
#include <ctime>
#include <math.h>

const int maxSize = 10;
const int nSym = 4;
const int s = 2 * maxSize * (maxSize + 1);
const char sym[nSym] = {' ' , 'X' , 'O' , '|'};

class coord {
  public:
    int x;
    int y;
};

class coordMass {
  public:
    int x[s];
    int y[s];
    int val[s];
    int vsVal[s];
    int rept[s];
};

int size = 3;
int map[maxSize][maxSize];
int x , y;
int player , type;
coord move;
char a;
char b[5];

int random (int a) {
    a = round(a * (double)(rand()%100) / 100);
    if (a == 0)
    a = 1;
    return a;
}

void PrintMap() {
    int i , j;
    for (i = 0 ; i < size ; i++)  {
        printf("%c",sym[nSym - 1]);
        for (j = 0; j < size ; j++)
        printf("%c%c",sym[map[i][j]],sym[nSym - 1]);
        printf("\n");
    }
}

void ClearMap() {
    int i , j;
    for (i = 0 ; i < size ; i++)
        for (j = 0 ; j < size ; j++)
        map[i][j] = 0;
}

int vs(int player) {
    if (player == 1)
    return 2;
    if (player == 2)
    return 1;
}

coord CalcMove(int player) {
    coord PlayerMove;
    int nMove = 0 , nMoveRept = 0;
    coordMass mMove , mMoveRept;
    int i , j , n , vsN , x , y;
    int valMax = 0 , vsValMax = 0;
    int reptMax = 0 , nMax = 0 ;
    int rpos;

    srand(time(NULL));
    for (i = 0 ; i < size ; i++) {
        n = 0;
        vsN = 0;

        for (j = 0; j < size ; j++) {
            if (map[i][j] == player)
            n += 1;
            if (map[i][j] == vs(player))
            vsN += 1;
            mMove.x[size * nMove + j] = i;
            mMove.y[size * nMove + j] = j;
        }
        for (j = 0; j < size ; j++)
        if (map[i][j] == 0) {
            mMove.val[size * nMove + j] = n;
            mMove.vsVal[size * nMove + j] = vsN;
        }
        else {
            mMove.val[size * nMove + j] = -1;
            mMove.vsVal[size * nMove + j] = -1;
        }
        nMove += 1;
    }

    for (j = 0 ; j < size ; j++) {
        n = 0;
        vsN = 0;

        for (i = 0; i < size ; i++) {
            if (map[i][j] == player)
            n += 1;
            if (map[i][j] == vs(player))
            vsN += 1;
            mMove.x[size * nMove + i] = i;
            mMove.y[size * nMove + i] = j;
        }
        for (i = 0; i < size ; i++)
        if (map[i][j] == 0) {
           mMove.val[size * nMove + i] = n;
           mMove.vsVal[size * nMove + i] = vsN;
        }
        else {
           mMove.val[size * nMove + i] = -1;
           mMove.vsVal[size * nMove + i] = -1;
        }
        nMove += 1;
    }

    for (j = 0 ; j <= 1 ; j++) {
        n = 0;
        vsN = 0;
        for (i = 0 ; i < size ; i++) {
            x = i;
            y = (j * 2 - 1) * (j *  (size - 1) - i);
            if (map[x][y] == player)
            n += 1;
            if (map[x][y] == vs(player))
            vsN += 1;
            mMove.x[size * nMove + i] = x;
            mMove.y[size * nMove + i] = y;
        }

        for (i = 0 ; i < size ; i++) {
            x = i;
            y = (j * 2 - 1) * (j *  (size - 1) - i);
            if (map[x][y] == 0) {
                mMove.val[size * nMove + i] = n;
                mMove.vsVal[size * nMove + i] = vsN;
                }
                else {
                mMove.val[size * nMove + i] = -1;
                mMove.vsVal[size * nMove + i] = -1;
                }
        }
        nMove += 1;
    }
    nMove *= size;

    for (i = 0 ; i < s ; i++)
    mMoveRept.rept[i] = 0;

    for (i = 0 ; i < nMove ; i++)
    if (mMove.val[i] != 0 and mMove.vsVal[i] != 0)
    mMove.val[i] = -1;

    for (i = 0 ; i < nMove ; i++) {
        if (mMove.val[i] != -1)
        for (j = 0 ; j <= nMoveRept ; j++) {
        if (mMove.x[i] != -1 and mMove.x[i] == mMoveRept.x[j] and mMove.y[i] == mMoveRept.y[j] and mMove.val[i] == mMoveRept.val[j] and mMove.vsVal[i] == mMoveRept.vsVal[j]) {
            mMoveRept.rept[j] += 1;
            mMove.x[i] = -1;
            break;
        }
    }
        if (mMove.val[i] != -1 and mMove.x[i] != -1) {
            mMoveRept.x[nMoveRept] = mMove.x[i];
            mMoveRept.y[nMoveRept] = mMove.y[i];
            mMoveRept.val[nMoveRept] = mMove.val[i];
            mMoveRept.vsVal[nMoveRept] = mMove.vsVal[i];
            mMoveRept.rept[nMoveRept] += 1;
            nMoveRept += 1;
            mMove.x[i] = -1;
        }

    }

    for (i = 0; i < nMoveRept ; i++) {
        if (mMoveRept.val[i] > valMax)
        valMax = mMoveRept.val[i];
        if (mMoveRept.vsVal[i] > vsValMax)
        vsValMax = mMoveRept.vsVal[i];
    }

    if (valMax >= vsValMax) {
        for (i = 0 ; i < nMoveRept ; i++)
        if (mMoveRept.val[i] == valMax and mMoveRept.rept[i] > reptMax)
        reptMax = mMoveRept.rept[i];
        vsValMax = 0;
    }
    else {
        for (i = 0 ; i < nMoveRept ; i++)
        if (mMoveRept.vsVal[i] == vsValMax and mMoveRept.rept[i] > reptMax)
        reptMax = mMoveRept.rept[i];
        valMax = 0;
    }

    for (i = 0 ; i < nMoveRept ; i++)
    if (mMoveRept.val[i] == valMax and mMoveRept.vsVal[i] == vsValMax and mMoveRept.rept[i] == reptMax)
    nMax += 1;

    rpos = random(nMax);

    i = 0;
    while (rpos > 0) {
        if (mMoveRept.val[i] == valMax and mMoveRept.vsVal[i] == vsValMax and mMoveRept.rept[i] == reptMax)
        rpos -= 1;
        i += 1;
    }
    rpos = i - 1;

    if (nMoveRept > 0) {
        PlayerMove.x = mMoveRept.x[rpos];
        PlayerMove.y = mMoveRept.y[rpos];
    }
    else {

        n = 0;
        for (i = 0 ; i < size ; i++)
        for (j = 0 ; j < size ; j++)
        if (map[i][j] == 0)
        n += 1;

        rpos = random(n);

        for (i = 0 ; i < size ; i++)
        for (j = 0 ; j < size ; j++)
        if (map[i][j] == 0) {
            rpos -= 1;
            if (rpos == 0) {
                PlayerMove.x = i;
                PlayerMove.y = j;
                break;
            }

        }

    }
    return PlayerMove;
}

int CheckGame() {
    int i , j , nPlayer , nVsPlayer , stat = 0 , x , y , player = 1;

    for (i = 0 ; i < size ; i++) {
        nPlayer = 0;
        nVsPlayer = 0;
        for (j = 0 ; j < size ; j++)
            if (map[i][j] == player)
            nPlayer += 1;
            else
            if (map[i][j] == vs(player))
            nVsPlayer += 1;
        if (nPlayer == size){
            stat = player;
            break;
        }
        if (nVsPlayer == size) {
            stat = vs(player);
            break;
        }
    }

    if (stat == 0)
    for (j = 0 ; j < size ; j++) {
        nPlayer = 0;
        nVsPlayer = 0;
        for (i = 0 ; i < size ; i++)
            if (map[i][j] == player)
            nPlayer += 1;
            else
            if (map[i][j] == vs(player))
            nVsPlayer += 1;
        if (nPlayer == size){
            stat = player;
            break;
        }
        if (nVsPlayer == size) {
            stat = vs(player);
            break;
        }
    }

    if (stat == 0)
    for (j = 0 ; j <= 1 ; j++) {
        nPlayer = 0;
        nVsPlayer = 0;
        for (i = 0 ; i < size ; i++) {
            x = i;
            y = (j * 2 - 1) * (j *  (size - 1) - i);
            if (map[x][y] == player)
            nPlayer += 1;
            if (map[x][y] == vs(player))
            nVsPlayer += 1;
        }
        if (nPlayer == size) {
        stat = player;
        break;
        }
        if (nVsPlayer == size) {
        stat = vs(player);
        break;
        }
    }

    if (stat == 0) {
    x = 0;
    for (i = 0 ; i < size ; i++)
    for (j = 0 ; j < size ; j++)
    if (map[i][j] != 0)
    x += 1;
    if (x == size * size)
    stat = 3;
    }
    return stat;
}

int main() {

    while (1) {
    system("cls");
    printf("Select a size of game (min 3 , max 10) :\n");
    do {
    scanf("%i",&size);
    if (not (size >= 3 and size <= 10))
    printf("Eror!\n");
    } while (not (size >= 3 and size <= 10));

    system("cls");
    printf("Select a type of game :\n");
    printf("1 - game with computer\n");
    printf("2 - game with friend\n");
    do {
    scanf("%i",&type);
    if (not (type >= 1 and type <= 2))
    printf("Eror!\n");
    } while (not (type >= 1 and type <= 2));

    system("cls");
    if (type == 1) {
    printf("Select a cross or toe :\n");
    printf("1 - cross\n");
    printf("2 - toe\n");
    do {
    scanf("%i",&player);
    if (not (player >= 1 and player <= 2))
    printf("Eror!\n");
    } while (not (player >= 1 and player <= 2));
    system("cls");
    }

    ClearMap();
    while (CheckGame() == 0) {

    if (type == 2) {
    PrintMap();
    printf("Cross move:\n");
    do {
    scanf("%i %i",&x,&y);
    if (not (x >= 1 and x <= size and y >= 1 and y <= size and map[x-1][y-1] == 0))
    printf("Eror!\n");
    } while (not (x >= 1 and x <= size and y >= 1 and y <= size and map[x-1][y-1] == 0));

    map[x-1][y-1] = 1;
    if (CheckGame() != 0) {
    break;
    }
    else
    system("cls");

    PrintMap();
    printf("Toe move:\n");
    do {
    scanf("%i %i",&x,&y);
    if (not (x >= 1 and x <= size and y >= 1 and y <= size and map[x-1][y-1] == 0))
    printf("Eror!\n");
    } while (not (x >= 1 and x <= size and y >= 1 and y <= size and map[x-1][y-1] == 0));
    map[x-1][y-1] = 2;
    if (CheckGame() != 0) {
    break;
    }
    else
    system("cls");
    }

    if (type == 1 and player == 2) {
    move = CalcMove(vs(player));
    map[move.x][move.y] = vs(player);
    if (CheckGame() != 0) {
    break;
    }
    }

    if (type == 1) {
    PrintMap();
    printf("Your move :\n");
    do {
    scanf("%i %i",&x,&y);
    if (not (x >= 1 and x <= size and y >= 1 and y <= size and map[x-1][y-1] == 0))
    printf("Eror!\n");
    } while (not (x >= 1 and x <= size and y >= 1 and y <= size and map[x-1][y-1] == 0));
    map[x-1][y-1] = player;
    if (CheckGame() != 0) {
    break;
    }
    else
    system("cls");
    }

    if (type == 1 and player == 1) {
    move = CalcMove(vs(player));
    map[move.x][move.y] = vs(player);
    if (CheckGame() != 0) {
    break;
    }
    }

    }
    system("cls");
    PrintMap();
    if (type == 1 and CheckGame() == player)
    printf("You win!\n");
    else
    if (type == 1 and CheckGame() == vs(player))
    printf("You lose!\n");

    if (type == 2) {
        if (CheckGame() == 1)
        printf("Cross win!\n");
        if (CheckGame() == 2)
        printf("Toe win!\n");
    }
    if (CheckGame() == 3)
    printf("Draw!\n");

    printf("Do you want to try again ?\n");
    printf("Print Yes to continue\n");
    scanf("%s",&b);
    if (not (b[0] == 'Y' and b[1] == 'e' and b[2] == 's'))
    break;
    }

    return 0;
}