C++ 编程/代码/变量/示例/添加两个数字并打印它们的和1

// This program adds two numbers and prints their sum, variation 1
#include <iostream>
#include <ostream>

using namespace std;

int main()
{
  int a = 123, b (456), sum = a + b;
 
  cout << "The sum of " << a << " and " << b << " is " << sum << endl;
 
  return 0;
}