如何使用memcpy将一个字符串复制到另一个字符串（char **）中？

Question

struct orange_t {

    short size;
    Month expirationMonth;
    char** foodCompanies;
    int maxNumberOfFoodCompanies;
    int sellingPrice;
};

memcpy(orange->foodCompanies,foodCompany,sizeof(strlen(foodCompany)));
printf("%s %s",orange->foodCompanies[0],foodCompany);

My problem. that I really don't know to access rightfully to the first word in orange in foodComapnies, the second and so on ...

What is the right syntax and the right way to do it? I want to write a few foodComapny into orange->foodCompanies, each foodComapny in another place in the array of strings.

Answer 1

memcpy(orange->foodCompanies,foodCompany,sizeof(strlen(foodCompany)));

is wrong. sizeof(strlen...) tells you how big a number is - not useful.

I assume that foodCompanies is an array of names and you want to add foodCompany to that array. You dont show how that array was set up (v important). I will assume that its not set up

orange->foodCompanies = malloc(sizeof(char*))// array holds one entry
orange->foodCompanies[0] = strdup(foodCompany); 

to add another entry you will need to realloc or make the original malloc bigger