CODEWITHSUNDEEP
c++struct
Brett Morris
Brett Morris

Reputation: 27

How to define structs as members of structs?

I'm trying to define a struct with other structs as members of that struct but I'm not sure how this is done. The code I have looks like this so far: 

typedef struct name
{

    char fname[15];
    char lname[15];

} Name;

typedef struct info
{

    int grade;
    char phone[13];

} Info;

typedef struct mark
{

    int math;
    int sci;
    int eng;

} Mark;

typedef struct student
{

    Name n;
    Info i;
    Mark m;

} Student;

int main()
{

    Student class_list[30] = { };

}

Upvotes: 0

Views: 65

Answers (1)

bolov
bolov

Reputation: 75688

If your question is how to initialize the array then the answer is like this:

Student class_list[2] = {
    {{"John", "Doe"}, {8, "000-555-000"}, {1, 2, 3}},
    {{"Jane", "Doe"}, {10, "000-555-001"}, {10, 8, 10}},
};

The reasons it works like this is because your classes are aggregates so you can use aggregate initialization.

Well, I initialized an array of 2 elements. You can see the syntax.

Some points for your program. The way of typedef struct is a C idiom. In C++ you don't need it so please change all the definitions to:

struct Name
{
    char fname[15];
    char lname[15];
};

Also you should use std::array instead of C arrays:

std::array<Student, 3> class_list {{
    {{"John", "Doe"}, {8, "000-555-000"}, {1, 2, 3}},
    {{"Jane", "Doe"}, {10, "000-555-001"}, {10, 8, 10}},
}};

Upvotes: 2

Related Questions