Game Of Life will not update the next generations in C++

I made a C++ game of life program that displays generations based on the rules to Conrad's Game of Life but the generations are always the same. Keep in mind, I am a pretty new programmer and I really need help on this because it's for a class assignment! Please help me! Here is my code:

Code:

#include <iostream>

#include <iomanip>

#include <ctime>

using namespace std;


const int n = 10; //Size of two dimension array (10x10)


int check(const char LifeArray[][n + 2], int row, int col) //function to determine number of neighbors

{

    int num_neighbors;

 

    num_neighbors = 0;

 

    if ((LifeArray[row - 1][col - 1]) == 'X')

        num_neighbors++;

    if ((LifeArray[row - 1][col]) == 'X')

        num_neighbors++;

    if ((LifeArray[row - 1][col - 1]) == 'X')

        num_neighbors++;

    if ((LifeArray[row][col - 1]) == 'X')

        num_neighbors++;

    if ((LifeArray[row][col + 1]) == 'X')

        num_neighbors++;

    if ((LifeArray[row + 1][col-1]) == 'X')

        num_neighbors++;

    if ((LifeArray[row + 1][col]) == 'X')

        num_neighbors++;

    if ((LifeArray[row + 1][col + 1]) == 'X')

        num_neighbors++;

 

    return num_neighbors;

}


int main()

{

 

    int row;

    int col;

    char life_array[n + 2][n + 2];      //original array

    char new_array[n + 2][n + 2];       //array for next generation

    int num_neighbors = 0;                //Neighbors of each square in generation

 

    for(row = 1;row < n + 2;row++)

        {

        for(col = 1;col < n + 2;col++)

            {

              

            int random_integer = (rand() % 2);

          // srand ( time(NULL) );


            if((random_integer) == 0)

                {

                life_array[row][col] = '-';

                }

            else

                {

                life_array[row][col] = 'X';

                }

          

            }

        }

    for(int num_gen = 0;num_gen < 2;num_gen++)      //generation loop for 2 generations

        {

        cout << "Generation: " << num_gen + 1 << endl; //Header

      

      

        for(row = 1;row < n + 1;row++)        //Print Generation

            {

            cout << endl;

            for(col = 1;col < n + 1;col++)

                {

                cout << life_array[row][col] << " ";

                }

            }

          

        for(row = 1;row < n + 1;row++)     //Loop to determine nieghbors

            {

            cout << endl;

              

            for(col = 1;col < n + 1;col++)

                {

                if ((life_array[row][col]) == 'X') //If box has an X

                    {

                    num_neighbors = check(life_array,row,col);

                    if (num_neighbors != 3)  //Conditions to determine if X lives or dies

                        {

                        new_array[row][col] = '-';

                        }

                    else

                        {

                        new_array[row][col] = 'X';

                        }

                    }

                  

                else         //If no 'X' in box

                    {

                    num_neighbors = check(life_array,row,col);

                    if(num_neighbors != 2)   //Condition to determine if X is born

                        {

                        new_array[row][col] = '-';

                        }

                    else

                        {

                        new_array[row][col] = 'X';

                        }

                    }

                }

            }

      

      

        for(row = 1;row < n + 1;row++)     //Copies new array to original array

            {

            for(col = 1;col < n + 2;col++)

                {

                new_array[row][col] = life_array[row][col];

                }

            }

      

      

        }

    return 0;

}