Problem Statement

1Problem Description :  
2Write Algorithm, Flowchart and Program to Add Two Integers  
3 
4Example 1 :  
5  Input  : a = 3 and b = 7 
6  Output : 10 
7  Explanation :  sum of 3 and 7 results to 10 
8 
9Example 2 :   
10  Input  : a = 12 and b = 7 
11  Output : 19 
12  Explanation : sum of 12 and 7 results to 19 

Algorithm

1Input : Two numbers num1 and num2 
2Step 1: Start 
3Step 2: Declare sum to 0  (This is optional step, during step5 we can add declaration and assign directly as well) 
4Step 3: Read number num1
5Step 4: Read number num2 
6Step 5: Add num1 and num2 and assign result to variable sum 
7Step 6: Print sum 
8Step 7: Stop 
9Output: Sum of num1 and num2  

Video Explanation

Flowchart

Code Implementation

1import java.util.Scanner;
2
3public class SumOfTwoNumbers {
4
5    public static void main(String[] args) {
6
7        // Initialize scanner to which is used to read inputs
8        Scanner sc = new Scanner(System.in);
9
10        // Read number1 and number 2
11        System.out.print("Enter num1: ");
12        int num1 = sc.nextInt();
13        System.out.print("Enter num2: ");
14        int num2 = sc.nextInt();
15
16        // calculate sum
17        int sum = num1 + num2;
18
19        //print sum
20        System.out.printf("%d + %d = %d \n", num1, num2,sum);
21    }
22}

1Output 1 : 
2Enter number1: 10 
3Enter number2: 23 
410 + 23 = 33

1Output 2 : 
2Enter number1: 2 
3Enter number2: 12 
42 + 12 = 14