Question

# include <iostream>
using namespace std;

int main(){
  /*declaring boolean that states if player's health is less than one 
  they are dead/true  */
  int playerHealth = 10;
  bool isPlayerDead=playerHealth < 1;

  //kills player 
  playerHealth = playerHealth - 10;

  //if statement to prove that player died.
  if(isPlayerDead){
      cout << "You died" << endl;
      cout << isPlayerDead << endl;
      cout << playerHealth << endl;
  }
  else{
      cout << "You are alive" << endl;
      cout << isPlayerDead << endl;
      cout << playerHealth << endl;

  }

     return 0;
}

如果玩家受到10点伤害，并且他们的生命值现在为0，则他们的生命值小于1.这不会使布尔值为真，为什么不是？

Answer 1

您在创建时已将isPlayerDead初始化为false。

然后修改playerHealth以便玩家死亡 - 但之后你不会更新isPlayerDead，因此它仍然包含false。

如果您每次使用它都需要更新，请考虑使用功能：

bool isPlayerDead() { return playerHealth < 1; }

int main() { 
    // ...
    if (isPlayerDead())
        //...

布尔程序返回false，即使它应该为true。简单程序

1 个答案: