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  1. #include <iostream>
  2. #include <string>
  3. using namespace std;
  4.  
  5. // Nested Structure Definitions
  6. struct Course {
  7.     string courseName;
  8.     int marks;
  9. };
  10.  
  11. struct Student {
  12.     int id;
  13.     string name;
  14.     Course courses[3]; // Array of courses
  15. };
  16.  
  17. // Function Prototypes
  18. void inputStudentDetails(Student &student);
  19. void displayStudentDetails(const Student &student);
  20. float calculateAverageMarks(const Student &student);
  21.  
  22. int main() {
  23.     const int numStudents = 2; // Number of students
  24.     Student students[numStudents];
  25.  
  26.     // Input details for each student
  27.     for (int i = 0; i < numStudents; i++) {
  28.         cout << "\nEntering details for Student " << i + 1 << ":\n";
  29.         inputStudentDetails(students[i]);
  30.     }
  31.  
  32.     // Display details for each student
  33.     for (int i = 0; i < numStudents; i++) {
  34.         cout << "\nDetails for Student " << i + 1 << ":\n";
  35.         displayStudentDetails(students[i]);
  36.     }
  37.  
  38.     return 0;
  39. }
  40.  
  41. // Function to input details for a single student
  42. void inputStudentDetails(Student &student) {
  43.     cout << "Enter Student ID: ";
  44.     cin >> student.id;
  45.     cin.ignore(); // Ignore trailing newline
  46.  
  47.     cout << "Enter Student Name: ";
  48.     getline(cin, student.name);
  49.  
  50.     for (int i = 0; i < 3; i++) {
  51.         cout << "\nEnter details for Course " << i + 1 << ":\n";
  52.         cout << "Course Name: ";
  53.         getline(cin, student.courses[i].courseName);
  54.         cout << "Marks: ";
  55.         cin >> student.courses[i].marks;
  56.         cin.ignore(); // Ignore trailing newline
  57.     }
  58. }
  59.  
  60. // Function to display details for a single student
  61. void displayStudentDetails(const Student &student) {
  62.     cout << "Student ID: " << student.id << endl;
  63.     cout << "Student Name: " << student.name << endl;
  64.  
  65.     cout << "Courses:\n";
  66.     for (int i = 0; i < 3; i++) {
  67.         cout << "  " << student.courses[i].courseName << " - Marks: " << student.courses[i].marks << endl;
  68.     }
  69.  
  70.     float average = calculateAverageMarks(student);
  71.     cout << "Average Marks: " << average << endl;
  72. }
  73.  
  74. // Function to calculate the average marks of a student
  75. float calculateAverageMarks(const Student &student) {
  76.     int totalMarks = 0;
  77.     for (int i = 0; i < 3; i++) {
  78.         totalMarks += student.courses[i].marks;
  79.     }
  80.     return static_cast<float>(totalMarks) / 3; // Return average marks
  81. }
  82.  
Success #stdin #stdout 0.01s 5268KB
comments (?)
stdin
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Standard input is empty
stdout
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Entering details for Student 1:
Enter Student ID: Enter Student Name: 
Enter details for Course 1:
Course Name: Marks: 
Enter details for Course 2:
Course Name: Marks: 
Enter details for Course 3:
Course Name: Marks: 
Entering details for Student 2:
Enter Student ID: Enter Student Name: 
Enter details for Course 1:
Course Name: Marks: 
Enter details for Course 2:
Course Name: Marks: 
Enter details for Course 3:
Course Name: Marks: 
Details for Student 1:
Student ID: 0
Student Name: 
Courses:
   - Marks: -1156709568
   - Marks: 0
   - Marks: 187955147
Average Marks: -3.22918e+08

Details for Student 2:
Student ID: 188579048
Student Name: 
Courses:
   - Marks: 187368952
   - Marks: -1195687928
   - Marks: -1195697339
Average Marks: 6.96984e+08
https://ideone.com/IMiMJV
language:
C++ (gcc 8.3)
created:
10 days ago
visibility:
public

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