Simple Geometric Calculator in C++

In this article a simple geometric calculator written in C++. The code shows you how to create a menu-driven program and the use of conditional statements in C++.

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Program Listing

#include<iostream>

using namespace std;

int main(){

    int choice;

    cout<<"-- Simple Geometric Calculator --"<<endl;

    cout<<"- 1. Perimeter of Square       --"<<endl;

    cout<<"- 2. Perimeter of Rectangle    --"<<endl;

    cout<<"- 3. Area of Square            --"<<endl;

    cout<<"- 4. Area of Rectangle         --"<<endl;

    cout<<"---------------------------------"<<endl;

    cout<<"What is my choice :>";cin>>choice;

    if (choice==1)

    {

        double s,ps;

        cout<<"You have chosen Perimeter of Square"<<endl;

        cout<<"Enter side of Square :"; cin>>s;

        ps = 4*s;

        cout<<"Perimeter of Square is :"<<ps<<endl;

    }

    else if (choice==2)

    {

        double pl,ph,pr;

        cout<<"You have chosen Perimeter of Rectangle"<<endl;

        cout<<"Enter length of Rectangle :"; cin>>pl;

        cout<<"Enter height of Rectangle :"; cin>>ph;

        double setr = pl+ph;

        pr = setr*2;

        cout<<"Perimeter of Rectangle is :"<<pr;

    }

    else if (choice==3)

    {

        double ss,as;

        cout<<"You have chosen Area of Square"<<endl;

        cout<<"Enter side of Square :"; cin>>ss;

        as = ss * ss;

        cout<<"Area of Square is :"<<as;

    }

    else if (choice==4)

    {

        double al,ah,ar;

        cout<<"You have chosen Area of Rectangle"<<endl;

        cout<<"Enter length of Rectangle :"; cin>>al;

        cout<<"Enter height of Rectangle :"; cin>>ah;

        ar = al*ah;

        cout<<"Area of Rectangle is :"<<ar;

    }

return 0;

}