Quiz 2

Question:
Every student's record must consist of Age, ID Number and Mark.
a)  Declare a struct named PELAJAR which consists of the above component.
b)  In the main function, declare a student array which consists of 20 students.
c)  Create a function to read in the data for 20 students by using the student array and maximum number of students as parameters.
d)  Create a function to display the data for all students by using the student array and maximum number of students as parameters.
e)  Create a function to find a student with the highest mark.
f)   Complete the program by creating the main function:
     (i) Initialize the student array to dummy values.
     (ii) Create appropriate function calls to call functions in c), d) and e).
My answer:
#include <iostream>
#include <string>
using namespace std;
const int size = 20; int i;

struct PELAJAR
{
       int Age;
       string ID_Number;
       float Mark;
}students[size];

void read(PELAJAR students[size],int size)
{
     for (i=0;i<size;i++)
     {
         cout << (i+1) << ": " << endl;
         cout << "\tAge: ";
         cin  >> students[i].Age;
         cout << "\tID Number: ";
         cin  >> students[i].ID_Number;
         cout << "\tMark: ";
         cin  >> students[i].Mark;
         cout <<endl;
     }//for
}//Read

void display(PELAJAR students[size],int size)
{
     cout << endl;
     cout << "No\tAge\tID Number\tMark" << endl;
     for (i=0;i<size;i++)
     {
         cout << (i+1) << "\t" << students[i].Age << "\t" << students[i].ID_Number
                       << "\t" << students[i].Mark << endl;
     }
}//display

void highest (void)
{
     float highest = students[0].Mark;
     int high=0;
     for (i=1;i<size;i++)
     {
         if (students[i].Mark>highest)
         {
            highest=students[i].Mark;
            high=i;
         }
     }
     cout << endl;
     cout << "Student with highest mark is student " << (high+1)
          << " ID Number: " << students[high].ID_Number
          << " with Mark: " << students[high].Mark;
     cout << endl;
}

int main()
{
     for (i=0;i<size;i++)
     {
         students[i].Age=0;
         students[i].ID_Number="0";
         students[i].Mark=0.0;
     }
     read(students,size);
     display (students,size);
     highest();
  
     cin.ignore();
     cin.get();
     return 0;
}