Given two integers
a and b. Write a function int Add(int a, int b) that returns their sum.Example 1
Input: a = -1, b = 1
Output: 0
Explanation: -1 + 1 = 0
Output: 0
Explanation: -1 + 1 = 0
Example 2
Input: a = 0, b = 0
Output: 0
Explanation: 0 + 0 = 0
Output: 0
Explanation: 0 + 0 = 0
Example 3
Input: a = 2, b = 3
Output: 5
Explanation: 2 + 3 = 5
Output: 5
Explanation: 2 + 3 = 5