C++学习一 结构与结构体

#include <iostream>
#include <string>
using namespace std;
//结构体 
struct EnemySpaceShip
{
    int x_coordinate;
    int y_coordinate;
    int power;
};          //结构体后面始终都要有一个‘;‘ 
//结构体初始化
 EnemySpaceShip getNewEnemy()
 {
     EnemySpaceShip ship;
     ship.x_coordinate=0;
     ship.y_coordinate=0;
     ship.power=4;
     return ship;
 }
 EnemySpaceShip upgrateWeapons (EnemySpaceShip ship)
 {
     ship.power+=10;
     return ship;
     return ship;
 }
 
int main()
{
    EnemySpaceShip enemy=getNewEnemy();
    enemy=upgrateWeapons(enemy);
    enemy=upgrateWeapons(enemy);
    cout<<"the ship is "<<enemy.x_coordinate<<","<<enemy.y_coordinate<<","<<enemy.power<<endl;
}