Answer to Question #185882 in C++ for VARUN

Question

Initialize the class members using constructors and destroy the objects by using destructor

Define a class Student with the following specification:

PRIVATE DATA MEMBERS:

regno integer sname 20 character s1, s2. s3 float total float

PUBLIC MEMBER FUNCTIONS:

Student() Default constructor to initialize data members, s1 = s2 = s3 = 0

Student(rn, sn, m, p, c) Parameterized constructor accept values for regno, sname, s1, s2 and s3

calculate() Function to calculate the student total marks

putdata() Function to display all the data members of student

~student() Destructor to destroy the data objects

Runtime Input :

12

Ramesh

60

70

65

Output :

12

Ramesh

60

70

65

195

Answer 1

#include <iostream>
using namespace std;
class Student{
    int regno;
    float s1, s2, s3, total;
    char *sname;
    public:
    Student(){}
    Student(int rn, char sn[20], float m, float p, float c){
        sname = sn;
        regno = rn;
        s1 = m;
        s2 = p;
        s3 = c;
    }
    void calculate(){
        total = s1 + s2 + s3;
    }
    void putdata(){
        cout<<"regno: "<<regno<<endl;
        cout<<"name: "<<sname<<endl;
        cout<<"s1: "<<s1<<endl;
        cout<<"s2: "<<s2<<endl;
        cout<<"s3: "<<s3<<endl;
        cout<<"Total: "<<total<<endl;
    }
    ~Student(){
    }
};
int main(){
    int regno;
    float s1, s2, s3;
    string name;
    char sname[20];
    cout<<"Enter runtime input\n";
    cin>>regno;
    cin>>name;
    for(int i = 0; i < name.length(); i++) sname[i] = name[i];
    cin>>s1;
    cin>>s2;
    cin>>s3;
    Student student(regno, sname, s1, s2, s3);
    cout<<"output\n";
    student.calculate();
    student.putdata();
    return 0;
}