Simple Calculator In C++ Language

// Author : Niraj Rajendra Bhagvat

// Date : 08/08/2022 

#include<iostream>

using namespace std;

int main()
{
    float n1=0,n2=0,res=0;
    /*Declaration of two numbers for
     taking input */
    char op='\0';
    /*Declaration of character
     as a operator*/
   
    cout << "Enter first number ";
    cin >> n1 ;
   
    cout << "\nEnter the operation ";
    cin >> op ;
   
    cout << "\nEnter second number ";
    cin >> n2 ;
/* Taking inputs of the first
& second number with the operator
to pass it in switch statement*/

    switch(op)
    {
        case '+': // For adding two numbers
        res = n1+n2;
        cout << "\nAddition = "<<res;
        break;
       
        case '-': // For substracting two numbers
        res = n1-n2;
        cout << "\nSubstraction = "<<res;
        break;
       
        case '*': // For multiplication
        case 'x': // If someone enters 'x' or 'X' for 
        case 'X': // multiplication it is also accepted
        res = n1*n2;
        cout << "\nMultiplication = "<<res;
        break;
       
        case '/': // For divide first number by second
        res = n1/n2;
        cout << "\nDivision = "<<res;
        break;
       
        default : /* If someone enters wrong operator
                  then this will be printed */
        cout << "\nEnter valid operator";
    }
   
    return 0;
}

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