mn giúp em với ạ C++ NHÉ

#include <bits/stdc++.h>

using namespace std;

double a,b;

int main()

{

cin>>a>>b;

cout<<fixed<<setprecision(3)<<(a+b)<<endl;

cout<<fixed<<setprecision(3)<<a-b<<endl;

cout<<fixed<<setprecision(3)<<a*b<<endl;

cout<<fixed<<setprecision(3)<<a/b<<endl;

return 0;

}

#Nqaan247

#include <iostream>
#include <iomanip>
using namespace std;
int main() {
    double a,b;
    cin >> a >> b;
    cout << fixed << setprecision(3) << a+b << endl << a-b << endl << a*b << endl << a/b;
}