C ++ static variables in the cocos2d-x using misunderstanding, staticcocos2d-x

C ++ static variables in the cocos2d-x using misunderstanding, staticcocos2d-x

void Cms::showMonster(CCArray*  monsterArray,int type){    <span style="color:#ff0000;">static int posN=0;</span>    for(int i=0;i<monsterArray->count();i++)   {       auto  monsterSprite=(CCSprite*)monsterArray->objectAtIndex(i);   if(type==1)        {      monsterSprite->setPosition(ccp(640+posN*480,4*32-16));     }   if(type==2)   {       monsterSprite->setPosition(ccp(160+posN*640,192*2));    }      this->addChild(monsterSprite);   posN++;   }}

In the above code, I used a static variable posN. When the game started again, I found that the location of the monster was not in the original position. This problem is caused by static variables. We know that static variables are opened in static areas of the memory space .. It has a feature that, even if the program is not finished, the variable cannot be destroyed even if it is a scenario jump .. So when we run this code again, the static variable count is not from scratch, but a value;

In C language, is static variables static and static allocated variables a concept?

Not all! For example, the global variable you defined is also the space for static allocation! Local variables are dynamically allocated in the running stack.

What is the static variable in C? Why static variables?

Static variables are global variables defined in the function scope. There are no special usage rules. They all look at your personal preferences. For global variables that only use one function, static variables are "clean ".