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  1. #include <iostream>
  2. #include <iomanip>
  3. #include <string>
  4. #include <cstdlib>
  5. #include <ctime>
  6.  
  7. void print_menu();
  8. int get_selection();
  9. std::string get_Name();
  10. float get_GPA();
  11. int get_Year();
  12. void input_new_student(std::string student_names[], float student_GPA[], int student_start_year[], int index, int ramapo_id[]);
  13. void print_all(std::string student_names[], float student_GPA[], int student_start_year[], int index, int size, int ramapo_id[]);
  14. void print_by_year(std::string student_names[], float student_GPA[], int student_start_year[], int index, int size);
  15. void print_statistics(std::string student_names[], float student_GPA[], int student_start_year[], int index, int size, float sum);
  16.  
  17.  
  18. using namespace std;
  19.  
  20. int main()
  21. {
  22.     std::string student_names[100];
  23.     float student_GPA[100];
  24.     int student_start_year[100];
  25.     int ramapo_id[100];
  26.     int userChoice;
  27.     int index = 0;
  28.     int size = 0;
  29.     float sum = 0.0;
  30.  
  31.     do
  32.     {
  33.         print_menu();
  34.         userChoice = get_selection();
  35.         if (userChoice == 1)
  36.         {
  37.             input_new_student(student_names, student_GPA, student_start_year, index, ramapo_id);
  38.             index++;
  39.         }
  40.         if (userChoice == 2)
  41.         {
  42.             print_all(student_names, student_GPA, student_start_year, index, size, ramapo_id);
  43.         }
  44.         if (userChoice == 3)
  45.         {
  46.             print_by_year(student_names, student_GPA, student_start_year, index, size);
  47.         }
  48.         if (userChoice == 4)
  49.         {
  50.             print_statistics(student_names, student_GPA, student_start_year, index, size, sum);
  51.         }
  52.         if (userChoice == 5)
  53.         {
  54.             return 0;
  55.         }
  56.     } while (false);
  57.     return 0;
  58. }
  59. void print_menu()
  60. {
  61.     cout << "Please pick from the following menu " << endl;
  62.     cout << "1. Add a new student " << endl;
  63.     cout << "2. Print all students " << endl;
  64.     cout << "3. Print students by year " << endl;
  65.     cout << "4. Print student statistics " << endl;
  66.     cout << "5. Quit" << endl;
  67. }
  68. int get_selection()
  69. {
  70.     int userChoice;
  71.     cin >> userChoice;
  72.  
  73.     if (userChoice > 4 || userChoice < 1)
  74.     {
  75.         cout << "Error: Invalid input " << userChoice <<  ", please try again: ";
  76.     }
  77.     return userChoice;
  78. }
  79. string get_Name()
  80. {
  81.     std::string student_name;
  82.  
  83.     cout << "Please enter the student's name: ";
  84.     cin >> student_name;
  85.  
  86.     return student_name;
  87. }
  88. float get_GPA()
  89. {
  90.     float student_GPA;
  91.  
  92.     cout << "Please enter the GPA: ";
  93.     cin >> student_GPA;
  94.  
  95.     return student_GPA;
  96. }
  97. int get_Year()
  98. {
  99.     int student_year;
  100.  
  101.     cout << "Please enter the start Year: ";
  102.     cin >> student_year;
  103.  
  104.     return student_year;
  105. }
  106. void input_new_student(std::string student_names[], float student_GPA[], int student_start_year[], int index, int ramapo_id[])
  107. {
  108.     //information generation
  109.     srand((unsigned)time(0));
  110.     int random_integer = rand();
  111.     ramapo_id[index] = random_integer;
  112.  
  113.     //information acquisition
  114.     student_names[index] = get_Name();
  115.     student_GPA[index] = get_GPA();
  116.     student_start_year[index] = get_Year();
  117.  
  118.     cout << "Student added suuccessfully";
  119. }
  120. void print_all(std::string student_names[], float student_GPA[], int student_start_year[], int index, int size, int ramapo_id[])
  121. {
  122.     for (int i = 0; i < size; i++) {
  123.     cout << student_names[i] << " - " << ramapo_id[i] << endl;
  124.     }
  125. }
  126. void print_by_year(std::string student_names[], float student_GPA[], int student_start_year[], int index, int size)
  127. {
  128.     int student_year_identifier;
  129.     cout << "Which year would you like to display?: ";
  130.     cin >> student_year_identifier;
  131.     for (int i = 0; i < size; i++)
  132.     {
  133.         if (student_year_identifier == student_start_year[i])
  134.         {
  135.             cout << "There were " << index << "students in that year" << endl;
  136.         }
  137.         else {
  138.             cout << "There were no students in that year" << endl;
  139.         }
  140.     }
  141. }
  142. void print_statistics(std::string student_names[], float student_GPA[], int student_start_year[], int index, int size, float sum)
  143. {
  144.     cout << "Total: " << index << endl;
  145.  
  146.     float avg = 0.0;
  147.   for (int i = 0; i < size; ++i)
  148.   {
  149.       sum += student_GPA[i];
  150.   }
  151.   avg = ((float)sum)/size;
  152.     cout << "GPA: " << avg << endl;
  153. }
Success #stdin #stdout 0s 16072KB
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stdin
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1
anil
8.0
2010
stdout
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Please pick from the following menu 
1. Add a new student 
2. Print all students 
3. Print students by year 
4. Print student statistics 
5. Quit
Please enter the student's name: Please enter the GPA: Please enter the start Year: Student added suuccessfully
https://ideone.com/D5x8Eh
language:
C++14 (gcc 8.3)
created:
8 years ago
visibility:
public

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