C Pyramid 6.1

#include <iostream>
#include <string>

using namespace std;
int n;
int main(int argc, char** argv)
{
cout << "Enter number : ";
cin >> n;
for (int i = 1; i <= n; i++)
{
for (int j = 1; j <= n - i; j++)cout << "-";
for (int k = 1; k <= i * 2 - 1; k++)cout << "X";
cout << endl;
}
return 0;
}