/******************************************************************************
 * Name:
 * NetID:
 * Precept:
 *
 * Description: This program takes a command-line argument n and prints
 * the sum (1 + 2 + ... + n).
 *
 * Examples:
 * > java FiniteSum 1
 * 1
 * > java FiniteSum 2
 * 3
 * > java FiniteSum 10
 * 55
 ******************************************************************************/

public class FiniteSum {
    public static void main(String[] args) {
        
        // read first command-line argument
        int n = ________________;
            
        // this variable is your running sum
        int sum = 0;
        
        // write a for-loop to calculate 'sum'
        
        // print 'sum'
        
    }
}

// Answer is in the reading!