在数组中生成随机颜色并将其存储在struct中

Question

您好我希望能够随机选择一组给定的颜色并将其存储到数组结构中。

void addrand(struct inv[],int *ptr)

const char *random[6];
            random[0] = "red";
            random[1] = "green";
            random[2] = "yellow";
            random[3] = "blue";
            random[4] = "white";
            random[5] = "black";

inv[*ptr].color = random[rand()%6];

我得到的类似数组类型＆＃39; char [30]＆＃39;不可分配。