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    #include <iostream>

using namespace std;



int main(){

double a,b;

cout<< "enter a number man\n";

cin>>a;

cout<< "enter another number man\n";

cin>>b;



double multiplication=a*b;

double division=a/b;

double sum=a+b;

double subtraction=a-b;



cout<< "the multiplication of your numbers is "<<multiplication<<endl;

cout<< "the division your numbers is "<<division<<endl;

cout<< "the sum of your numbers is "<<sum<<endl;

cout<< "the subtraction of your numbers is "<<subtraction<<endl;



return 0;

}

What if the user inputs characters instead of numbers?
Learn to sanitize your inputs

Other than that, good for a start. Keep going.