struct borland C++

Buat adik2 mahasiswa yg kesulitan mengerti apa itu struct......yuukk mari kita lihat program di bawah....!!!!

tapi jagn copas doank....dalami resapi dan rasakan...hahahah

#include <conio.h>

#include <iostream.h>

#include <stdio.h>

main(){

float tot,ip;

struct mahasiswa{

   char nim[12];

   char nama[15];

   char kelas[15];

   int smt;

}mhs;

struct KartuHasilStudi{

   char no[12];

   char smt[15];

   char th[15];

   int jmk;

}khs;

struct mk{

   char ko[12];

   char nmk[15];

   int sks;

  int nilai;

}mk;

cout<<"\nmasukkan NIM    = ";cin>>(mhs.nim);

cout<<"\nmasukkan Nama Mahasiswa   =";gets(mhs.nama);

cout<<"\nmasukkan kelas   = ";gets(mhs.kelas);

cout<<"\nmasukkan jml semester   ="; cin>>(mhs.smt);

cout<<"==============================="<<endl;

for(int i=1;i<=mhs.smt;i++)

{

cout<<"==============================="<<endl;

cout<<"\nmasukkan no KHS  =";cin>>(khs.no);

cout<<"\nmasukkan semester =";cin>>(khs.smt);

cout<<"\nmasukkan tahun    =";gets(khs.th);

cout<<"\nmasukkan jumlah mata kuliah  =";cin>>khs.jmk;

cout<<"==============================="<<endl;

for(int a=1;a<=khs.jmk;a++)

{

cout<<"\nmasukkan kode mata kuliah =";gets(mk.ko);

cout<<"\nmasukkan nama MK  =";gets(mk.nmk);

cout<<"\nmasukkan sks =";cin>>mk.sks;

cout<<"\nmasukkan nilai   =";cin>>mk.nilai;

cout<<"==============================="<<endl;

}}

cout<<"==============================="<<endl;

cout<<"==============================="<<endl;

cout<<" Data Akhir mahasiswa\n"<<endl;

cout<<"\n NIM   =\n"<<(mhs.nim);

cout<<"\n Nama Mahasiswa =\n"<<(mhs.nama);

cout<<"\n Kelas    =\n"<<(mhs.kelas);

tot=mk.sks*khs.jmk;

ip=(mk.nilai*mk.sks)/tot;

cout<<"\n IPK     =\n"<<ip;

getch();

}