有没有办法访问for循环块之外的变量

Question

有没有办法访问for循环块之外的变量？

int seedOffset;

// Loop through the asteroids and give them some starting orientation by using the random values 
for(std::vector<Asteroid*>::iterator asteroid = asteroids.begin(); asteroid != asteroids.end(); ++asteroid) 
{
    ( *asteroid )->posZ = -3.0;
    ( *asteroid )->rotX = GenerateRandomNumber( seedOffset, LOW, HIGH );
    ( *asteroid )->rotY = GenerateRandomNumber( seedOffset, LOW, HIGH );
    ( *asteroid )->rotZ = GenerateRandomNumber( seedOffset, LOW, HIGH );
    ( *asteroid )->initialSceneZRotation = GenerateRandomNumber( seedOffset, LOW, HIGH );
    seedOffset += 100;
}

错误：

Error   2   error C4700: uninitialized local variable 'seedOffset' used c:\**\game.cpp  53  1   Game

Answer 1

错误消息告诉所有人！

int seedOffset = 0; //Initialize the variable before use

Answer 2

您需要初始化seedOffset变量以避免错误。

int seedOffset = 0;