text: //
  //  main.cpp
  //  NameSpace
  //
  //  Created by April Young on 4/10/2018.
  //  Copyright © 2018 April. All rights reserved.
  //
  
  #include <iostream>
  #include <string>
  
  //使用命名空间
  //应用时可以不带库的出处
  //缺点,容易出命名冲突
  //不同命名空间,可以有相同函数名的函数
  using namespace std;
  
  int main(int argc, const char * argv[]) {
      // insert code here...
      string name = "April";
      string age = "28";
      
      cout << "My name is " << name << " and I'm " << age << " years old" << endl;
      
      return 0;
  }
  