• 2022-06-08
    以下对结构体类型变量的定义中,不正确的是______。①typedef struct aa { int n; float m; }AA; AA td1; ②#define AA struct aa AA{ int n; float m; }td1; ③struct { int n; float m; }aa; struct aa td1; ④struct { int n; float m; }td1;
    A: ①
    B: ②
    C: ③
    D: ④