giúp em bài này đc kg ạ trang web ilscoder ngôn ngữ c++app codeblocks ạ

/*
khanhtaon (︾▽︾)
*/
#include <bits/stdc++.h>
using namespace std;
double a, b;
char c;
int main()
{

    cin >> a >> b >> c;
    if(c == '+')
        cout << setprecision(1) << fixed << a+b;
    else if(c == '-')
        cout << setprecision(1) << fixed << a-b;
    else if(c == 'x')
        cout << setprecision(1) << fixed << a*b;
    else
        cout << setprecision(1) << fixed << a/b;

}

$#khanhtaon$

#include <bits/stdc++.h>
using namespace std;
signed main() {
	double a,b;
	cin>>a>>b;
	char op;
	cin>>op;
	if(op=='+')cout<<fixed<<setprecision(1)<<double(a+b);
	else if(op=='-')cout<<fixed<<setprecision(1)<<double(a-b);
	else if(op=='x')cout<<fixed<<setprecision(1)<<double(a*b);
	else if(op=='/')cout<<fixed<<setprecision(1)<<double(a/b);
}