2442번, 2445번

2442번

#include<iostream>
using namespace std;

int main()
{
	int cnt = 1;
	int n = 0;
	cin >> n;
	for (int i = 0; i < n; i++)
	{
		for (int j = n - i; j > 1; j--)
		{
			cout << " ";
		}
		for (int j = 0; j < cnt; j++)
		{
			cout << "*";
		}
		cnt = cnt + 2;
		cout << '\n';
	}
}

 

2445번

#include<iostream>
using namespace std;

int main()
{
	int cnt = 0;
	int n = 0;
	cin >> n;

	cnt = ((n - 1) * 2);
	for (int i = 0; i < n; i++)
	{
		for (int j = 0; j <= i; j++)
		{
			cout << '*';
		}
		for (int j = 0; j < cnt; j++)
		{
			cout << ' ';
		}
		for (int j = 0; j <= i; j++)
		{
			cout << '*';
		}
		cnt = cnt - 2;

		cout << '\n';
	}
	cnt = 2;
	for (int i = 0; i < n - 1; i++)
	{
		for (int j = n-1; j > i; j--)
		{
			cout << '*';
		}
		for (int j = 0; j < cnt; j++)
		{
			cout << ' ';
		}
		for (int j = n - 1; j > i; j--)
		{
			cout << '*';
		}
		cnt = cnt + 2;
		cout << '\n';
	}
	
	
}