Question

Q-1) Write a program that mimics a calculator. The program should take as input two integers and the operation to be performed. It should then output the numbers, the operator, and the result. For division, if the denominator is zero, output an appropriate message.

Some sample outputs follow:

3 + 4 = 7

13 * 5 = 65

Answer 1

#include <iostream>
//Preprocessing required libraries which are pre-defined
using namespace std;

//Exicution starts with main function which is mandatory

int main()
{
   //Declaring variables
    int number1, number2;
    char operation;
    //Printing
    cout << "Enter 1st Number: ";
    //Taking input from the user
    cin >> number1;
   cout << "Enter 2nd Number: ";
   cin >> number2;
   cout << "Enter Operator: ";
   cin>> operation ;
    //Navigating based on operation provided by the user using switch
    switch (operation) {
      
      
        case '+':
            cout << number1 <<operation <<number2 <<" = " << number1 + number2 <<endl;
            //Breaking the switch
            break;
        case '-':
            cout << number1 <<operation <<number2 <<" = " << number1 - number2 << endl;
            break;
        case '*':
            cout << number1 <<operation <<number2 <<" = " << number1 * number2 << endl;
            break;
        case '/':
           if(number2==0){
               cout << "Cannot divide by zero" << endl;
               break;  
           }
           else{
           cout << number1 <<operation <<number2 <<" = " << number1 / number2 << endl;
            break;
           }
       //Printing default message
        default:
            cout << "Error! Please enter correct input values" << endl;
            return 1;
            break;
    }
    return 0;
}

Output Screenshot: