C++ Program to Store Information of 5 Students in a Structure


January 21, 2023, Learn eTutorial
3396

In this C++ program, we have to store the information of 5 students (Name, Rollno, and Marks entered by the user ) in a structure and display it. 

What is a structure in C++?

The structure is a user-defined data structure that helps to store the data of different data types using a single name. For example, suppose we need to store a student's data like Name, number, marks, etc, we can use a structure. The keyword struct is used to create a structure. the syntax for that is

struct structure_name

{

   // data members

}

Note: for accessing a member and its data we have to use the dot '.' operator with the structure instance.

How to store student info in C++?

For storing the student data in C++, we have to declare a structure called student, with its data members as Name, Rollno, and Marks.

struct student
{
    char name[50];
    int roll;
    float marks;
};

Then create a structure array of size 5. Ask the user to enter the details of 5 students' data like Name, Rollno, and Marks. Use a for loop to add the information of 5 students we have created from the user screen. Finally, display the data entered by the user on the screen.

Algorithm

Step 1:  Call the header file iostream.

Step 2: Use the namespace std.

Step 3:  Create struct student

Step 4: Create structure members' name, roll, and marks.

Step 5: create a structure array of size 5. s[5]

Step 6: Open the integer type main function; int main().

Step 7: Ask the user to enter the details of the student.

Step 8: Store the entered details in the array by using a for loop

Step 9: Display the details on the screen

Step 10: Exit
 

C++ Source Code

                                          #include <iostream>
using namespace std;

struct student
{
    char name[50];
    int roll;
    float marks;
} s[5];

int main()
{
    cout << "Enter information of students: " << endl;

    // storing information
    for(int i = 0; i < 5; ++i)
    {
        s[i].roll = i+1;
        cout << "For roll number" << s[i].roll << "," << endl;

        cout << "Enter name: ";
        cin >> s[i].name;

        cout << "Enter marks: ";
        cin >> s[i].marks;

        cout << endl;
    }

    cout << "Displaying Information: " << endl;

    // Displaying information
    for(int i = 0; i < 5; ++i)
    {
        cout << "\nRoll number: " << i+1 << endl;
        cout << "Name: " << s[i].name << endl;
        cout << "Marks: " << s[i].marks << endl;
    }

    return 0;
}
                                      

OUTPUT

Enter information of students: 
For roll number1,
Enter name: a1
Enter marks: 55
For roll number2,
Enter name: a2
Enter marks: 65
For roll number3,
Enter name: a3
Enter marks: 95
For roll number4,
Enter name: a4
Enter marks: 85
For roll number5,
Enter name: a5
Enter marks: 25
Displaying Information: 

Roll number: 1
Name: a1
Marks: 55

Roll number: 2
Name: a2
Marks: 65

Roll number: 3
Name: a3
Marks: 95

Roll number: 4
Name: a4
Marks: 85

Roll number: 5
Name: a5
Marks: 25