OOPS PRACTICE TEST 1

PROGRAM:

#include<iostream>

#include<iomanip>

using namespace std;

class Shape {

protected:

double area;

public:

void computeArea() {

area =0 ;

}

public:

double getArea() {

return area;

}

public:

void setArea(double area) {

area = area;

}

};

class Circle : public Shape {

private:

double radius;

public:

double getRadius() {

return radius;

}

public:

void setRadius(double r) {

radius = r;

}

public:

void computeArea() {

area = 3.14*(radius*radius);

cout<<fixed<<setprecision(2)<<area;

}

};

class Rectangle:public Shape {

private:

double length;

private:

double breadth;

public:

double getLength() {

return length;

}

public:

void setLength(double l) {

length = l;

}

public:

double getBreadth() {

return breadth;

}

public:

void setBreadth(double b) {

breadth = b;

}

public:

void computeArea() {

area = length*breadth;

cout<<fixed<<setprecision(2)<<area;

}

};

class Triangle : public Shape {

private:

double base;

private:

double height;

public:

double getBase() {

return base;

}

public:

void setBase(double ba) {

base = ba;

}

public:

double getHeight() {

return height;

}

public:

void setHeight(double he) {

height = he;

}

public:

void computeArea() {

area = 0.5*base*height;

cout<<fixed<<setprecision(2)<<area;

}

};

int main() {

int n;

    double radius,length,breadth,base,height;

cin>>n;

Circle c ;

Rectangle r;

Triangle t;

if(n == 1) {

cin>>radius;

c.setRadius(radius);

//cout<< c.getRadius();

c.computeArea();

}

if(n == 2) {

cin>>length;

cin>>breadth;

r.setLength(length);

r.setBreadth(breadth);

r.computeArea();

}

if(n == 3) {

cin>>base;

cin>>height;

t.setBase(base);

t.setHeight(height);

t.computeArea();

}

if(n>3) {

cout<<"Invalid Input";

}

}

PROGRAM:

#include <iostream>  

using namespace std;  

class Employee {  

   public:  

       int id;      

       string name; 

       float salary;  

       public:

   void set_id(int digit) { id = digit; }

   int get_id() const { return id; }

   public:

   void set_salary(int sal) { salary = sal; }

   int get_salary() const { return salary; }

   public:

   void set_name(string n) { name = n; }

   string get_name() const { return name; }

       

       void display()    

        {    

            cout<<id<<"  "<<name<<"  "<<salary<<endl;    

        }    

};  

int main() {  

     

    int n,i;

    cin>>n;

    Employee e1[n];

    for(i=0;i<n;i++){

    cin>>e1[i].id>>e1[i].name>>e1[i].salary;

    e1[i].display();   

    }

      

    return 0;  

}