c - 错误: expected expression before ‘{’ token while assigning a character array

Question

在对象中分配字符数组时出现错误。如何解决此错误？

typedef struct car {
    int id;
    char *name;
    int price;
    char *colors[5];
} car;

int main()
{
    car obj;
    obj.id = 5;
    obj.name = "honda city zx";
    obj.price = 1500;
    obj.colors = {"red", "blue", "black"};   // Line 17

    return 0;
}

错误:

prtemp.c: In function ‘main’:
prtemp.c:17:18: error: expected expression before ‘{’ token
     obj.colors = {"red", "blue", "black"};

Answer 1

数组没有赋值运算符。所以这句话

obj.colors = {"red", "blue", "black"}; 

是无效的。你必须写

obj.colors[0] = "red";
obj.colors[1] = "blue";
obj.colors[2] = "black"; 
obj.colors[3] = NULL;
obj.colors[4] = NULL;

另一种方法是在创建对象时对其进行初始化。

car obj =
{
    5, "honda city zx", price = 1500, {"red", "blue", "black" }
};

或者，您可以使用所谓的指定初始化。

 car obj =
 {
    .id = 5, .name = "honda city zx", .price = 1500, .colors = { "red", "blue", "black" }
 };