package recursion;

/**
 * 򵥵ĵݹܺ
 * @author Administrator
 *
 */
public class triangle {
	public static void main(String[] arge) throws StackOverflowError{
		int n = 2;
		int result = triang(n);
		
		System.out.print(result);
	}
	
	public static int triang(int n) {
		if(n == 1) {
			return 1;
		}else {
			return (n+triang(n-1));
		}
	}
}