Problem Statement

1Problem Description : 
2Write Algorithm, Flowchart and Program to find sum of n input numbers 
3
4Example 1 :  
5  Input  : n = 4 and the numbers are 5, 3, 7, 4 
6  Output : 19 
7  Explanation : sum of 5, 3, 7 and 4 is 19 
8 
9Example 2 :  
10  Input  : n = 3 and the numbers are 5, 3, 7 
11  Output : 15 
12  Explanation : sum of 5, 3 and 7 results to 15 

Algorithm

1Input : n and n input numbers 
2Step 1: Start 
3Step 2: Read number n 
4Step 3: Declare sum to 0 and i to 1 (Here i is a counter variable which is used to input n numbers) 
5Step 4: Repeat steps 5 to 7 until i<=n 
6Step 5: Read number num 
7Step 6: update sum as sum = sum + num 
8Step 7: increment i 
9Step 8: Print sum 
10Output: sum

Video Explanation

Flowchart

Code Implementation

1import java.util.Scanner;
2
3public class SumOfNInputNumbers {
4
5    public static void main(String[] args) {
6        Scanner sc = new Scanner(System.in);
7
8        // Read n
9        System.out.print("Enter n : ");
10        int n = sc.nextInt();
11
12        // Declare sum and counter variable i
13        int sum = 0;
14        int i;
15
16        // loop to input n numbers
17        // loop continues until i<=n
18        for (i = 1; i <= n; i++) {
19            // Read number
20            System.out.printf("Enter number%d: ", i);
21            int number = sc.nextInt();
22
23            // update sum
24            sum = sum + number;
25        }
26        // Print sum
27        System.out.printf("Sum is %d \n", sum);
28    }
29}