Write a C++ program that allows a user the option of using two mini programs. Th

Question

Write a C++ program that allows a user the option of using two mini programs. The two mini programs should be as follows: 1. Write a program to simulate a simple calculator. It should accept two numbers from the user as well as the required operation to be performed. The basic operations that should be implemented are: addition, subtraction, division and multiplication. 2. Write a program that allows the user to input the radius, diameter, or area of a circle. The program should then calculate the other two based on the input.

Explanation / Answer

Arthimetic Operations

#include<iostream.h>
#include<conio.h>
#include<math.h>
void main()
{
   int number1,number2;
   char ch;
   clrscr();
   cout<<"Enter two integer values ";
   cin>>number1>>number2;
   cout<<"+) Addition -)Subtraction *)Mulitiplication /)Division %)Module ";
   cin>>ch;
   switch(ch)
   {
       case '+' :    cout<<"Addition :"<<number1+number2;
               break;
       case '-' :   cout<<"Subtraction : "<<(number1-number2);
               break;
       case '*' :   cout<<"Multiplication : "<<(number1*number2);
               break;
       case '/' :   cout<<"Division : "<<(number1/number2);
               break;
       case '%' :   cout<<"Module : "<<(number1%number2);
               break;
       default   :   cout<<"wrong choice";
   }
   getch();
}

Area of Circle:

#include<iostream.h>
#include<conio.h>
void main()
{
   float radius;
   clrscr();
   cout<<"Enter radius ";
   cin>>radius;
   cout<<"The Area of Circle : "<<(3.14*radius*radius)<<endl;
   cout<<"The Diameter of Circle : "<<(2*radius);
   getch();
}

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