c 語言 function

-

  • structure

     define example
    struct point
    {
    int x;
    int y;
    } ;

    int main(){
     struct point p;
    p.x=10;
    p.y=5;
    draw(p);
    } 

    •  進階定義的方法使用typeodef

    typedef：能夠自己定義資料型態的名稱，用在struct上能夠再定義struct型態的變數時不用再打一次struct。

     define example
    typedef struct {
    int x;
    int y;
    } point;

    int main(){
     point p;
    p.x=10;
    p.y=5;
    draw(p);
    } 
     

  • 輸入struct變數進入function內做運算

    void move(point *p){
     (*p).x++;
     (*p).y++;

    } 

    

    或是
     

    void move(point *p){
     p->x++;
     p->y++;

    } 
     

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