struct help

[JCharles]

I have the following program below I have the output but i dont know how to get it. The out put gives the names Jane Doe and Joe Public along with their GPA's per semester. I just need help explaining (detailed) what happens in each line. Especially what the period is between words. Your help is much appreciated

struct StudRec
{
string name;
float semgpas[14];
int enrolled;
:
StudRec jane,joe;
int i;
jane.name = "Jane Doe";
for (i=0; i < 12; i++)
jane.semgpa[i] = 4.00 - i/100.0;
jane.enrolled = 2004;
joe.enrolled = jane.enrolled + 2;
joe.name = "Joe Public";
for (i=6; i>=0; i--)
joe.semgpas[6-i] = jane.semgpas[i];
cout<<fixed<<setprecision(2);
cout<<"Student Name: "<<joe.name<<endl;
cout<<"Semester-by-semester gpas"<<endl;
for (i=0; i < 7; i++)
cout<<joe.semgpas[i]<<" ";
cout<<"Year enrolled: "<<joe.enrolled<<endl<<endl;
cout<<"Student Name: "<<jane.name<<endl;
cout<<"Semester-by-semester gpas"<<endl;
for (i=0; i < 12; i++)
cout<<jane.semgpas[i]<<" ";
cout<<"Year enrolled: "<<jane.enrolled<<endl<<endl;

[Stewbond]

This declares a structure with a bunch of member objects. It's a way of keeping data organized nicely.

struct StudRec
{
    string name;
    float semgpas;
    ...
}

Here you are declaring two objects that have the type of the structure. They are named jane and joe.
StudRec jane,joe;

The dot will let you access an element in the structure. If you want to set the name, then do something like:
jane.name = "Jane Doe";

For more information see:
http://cplusplus.com/doc/tutorial/structures/

[4z0M4iN6]

Maybe Stewbond, you should write your example correct?

Correct would be (don't forget the semicolon at the end):

struct StudRec
{
    string name;
    float semgpas;
    ...
};

And if you want to declare jane and joe, you have to write:

struct StudRec jane, joe;

But you could also write:

StudRec jane,joe;

If you define a typedef:

typedef struct _StudRec
{
    string name;
    float semgpas;
    ...
} StudRec;

[Peter87]

dadabe wrote:

struct StudRec jane, joe;

In C++ we often leave out the struct keyword here.

dadabe wrote:

typedef struct _StudRec
{
    string name;
    float semgpas;
    ...
} StudRec;

This is how you do it in C. In C++ it's not needed.

[JCharles]

I guess the question was misunderstood. I was given this program. I did not write it. I need it to be broken down to me step by step what is going on because as of now I am lost. I cant modify the program I just need to interpret the output. I have it already but I want to know how we get the the output because I am confused

[4z0M4iN6]

I fear, nobody understands this code, especially the colon after "int enrolled;" and the code after the colon. You should look, wether your example is really the same, what you posted here.

[JCharles]

it is we just need to understand the concept. We dont need to get an output from a compiler. We just need to get the general idea