ForLoop1.java

/*
Prompt the user and receive input for an int variable, n. Write a loop that prints the first n integers from 1 to n. Then modify this loop to calculate and print the sum of the first n integers.
Example: Enter a number: 5
        The sum is 15
*/
import java.util.Scanner;

public class ForLoop1{
   public static void main(String[] args){
      Scanner kb = new Scanner(System.in);
      System.out.print("Enter a number: ");
      int num = kb.nextInt();

      int sum = 0;
      for(int i = 1; i <= num; i++){
         sum += i;
      }

      System.out.println("The sum is " + sum);
   }
}