pascal triangle using c 2b 2b

1#include <iostream>
2using namespace std;
3
4int main()
5{
6    int rows, coef = 1;
7
8    cout << "Enter number of rows: ";
9    cin >> rows;
10
11    for(int i = 0; i < rows; i++)
12    {
13        for(int space = 1; space <= rows-i; space++)
14            cout <<"  ";
15
16        for(int j = 0; j <= i; j++)
17        {
18            if (j == 0 || i == 0)
19                coef = 1;
20            else
21                coef = coef*(i-j+1)/j;
22
23            cout << coef << "   ";
24        }
25        cout << endl;
26    }
27
28    return 0;
29}

1#include <iostream>
2using namespace std;
3
4
5int fact(int num){
6    int factorial = 1;
7    for (int i = 2; i <= num; i++)
8    {
9        factorial = factorial * i;
10    }
11    return factorial;
12}
13
14int main(){
15    int n;
16    cout << "Enter number of rows: ";
17    cin >> n;
18
19    for (int i = 0; i < n; i++)
20    {
21        for (int j = 0; j <=i; j++)
22        {
23            cout << fact(i) / (fact(j) * fact(i - j)) << " ";
24        }
25        cout << endl;
26    }
27    
28}

1int pascal(int row, int col) {
2  if (col == 0 || col == row) return 1;
3  else if(col == 1 || (col + 1) == row) return row;
4  else return pascal(row - 1, col - 1) + pascal(row - 1, col);
5}