在一個結構中設置typedef

Question

我想讓我的代碼更易於閱讀，所以我想將一個大的結構集合替換爲更強的表達式，但它不能編譯。

typedef float vec_t; 
typedef vec_t vec3_t[3]; 

typedef struct{ 
     int x; 
     vec3_t point; 
} structure1; 

//This Works just fine and is what i want to avoid 
structure1 structarray[] = { 
       1, 
       {1,1,1} 
}; 

//This is what i want to do but dont work 
//error: expected '=', ',', ';', 'asm' or '__attribute__' before '.' token 
structarray[0].x = 1; 
structarray[0].point = {0,0,0}; 

int main() 
{ 
     //This is acceptable and works 
     structarray[0].x = 1; 


     //but this dont work 
     //GCC error: expected expression before '{' token 
     structarray[0].point = {1,1,1}; 
} 

爲什麼不編譯？

Answer 1

structure1 structarray[] = { 
    [0].x = 1, 
    [0].point = { 0, 0, 0 }, 
}; 

// you can also use "compound literals" ... 

structure1 f(void) { 
    return (structure1) { 1, { 2, 3, 4 }}; 
} 

Answer 2

呀，這個問題，如果我記得的是，{1,1,0}風格構造只能用作初始化，而你（合理的），希望將其分配給一個變量。