#include <iostream>

using namespace std;

//equation to be done in the main
void AdditionEq(){
    int a, b, sum;
    cout<< "Please enter the 1st integer: ";
    cin>> a;
    cout<< "Please enter the 2nd integer: ";
    cin>> b;
    sum=a+b;
    cout<< "The result is: " <<sum<<endl;
}

void SubtractionEq(){
    int a, b, diff;
    cout<< "Please enter the 1st integer: ";
    cin>> a;
    cout<< "Please enter the 1st integer: ";
    cin>> b;
    diff=a-b;
    cout<< "The result is: " <<diff<<endl;
}

void DivisionEq(){
    int a, b, quad;
    cout<< "Please enter the 1st integer: ";
    cin>> a;
    cout<< "Please enter the 2nd integer: ";
    cin>> b;
    quad=a/b;
    cout<< "The result is: " <<quad<<endl;
}

void MultiplicationEq(){
    int a, b, pro;
    cout<< "Please enter the 1st integer: ";
    cin>> a;
    cout<< "Please enter the 1st integer: ";
    cin>> b;
    pro=a*b;
    cout<< "The result is: " <<pro<<endl;
}

int main()
{
   //Options for user
   char opt;

   cout<< "Please enter 'a' for ADDITION, 's' for SUBTRACTION, 'd' for DIVISION and 'm' for MULTIPLICATION: ";
   cin>> opt;

   if(opt=='a' || 'A'){
        AdditionEq();
   }else if (opt=='s' || opt=='S'){
        SubtractionEq();
    }else if (opt=='d' || opt=='D'){
        DivisionEq();
    }else if (opt=='m' || opt=='M'){
        MultiplicationEq();
   }
}