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#include <bits/stdc++.h>
using namespace std;
double a,b;
int main()
{
cin>>a>>b;
if (b==0) cout<<"Ko tinh duoc";
else
{
cout<<a+b<<endl;
cout<<a-b<<endl;
cout<<a*b<<endl;
cout<<a/b;
}
return 0;
}
#include <bits/stdc++.h>
using namespace std;
long long a,b;
int main()
{
cin>>a>>b;
cout<<a+b<<endl;
cout<<a-b<<endl;
cout<<a*b<<endl;
cout<<fixed<<setprecision(1)<<(a*1.0)/(b*1.0);
return 0;
}
#include <bits/stdc++.h>
using namespace std;
double a,b,c,p;
int main()
{
cin>>a>>b>>c;
p=a+b+c;
cout<<fixed<<setprecision(2)<<p;
return 0;
}
program sum_of_naturals;
var
i, n, sum: integer;
begin
write('Enter a positive integer: ');
readln(n);
sum := 0;
for i := 1 to n do
begin
sum := sum + i;
end;
writeln('The sum of the first ', n, ' natural numbers is ', sum);
end.
#include <bits/stdc++.h>
using namespace std;
double a,b,c;
int main()
{
cin>>a>>b>>c;
cout<<fixed<<setprecision(2)<<a+b+c;
return 0;
}
#include <iostream>
#include <iomanip>
using namespace std;
int main()
{
float a,b,t,h,s,thuong;
cout<<"Nhap a,b: ";
cin>>a>>b;
t=a+b;
h=a-b;
s=a*b;
thuong=a/b;
cout<<a<<"+"<<b<<"="<<fixed<<setprecision(2)<<t<<endl;
cout<<a<<"-"<<b<<"="<<fixed<<setprecision(2)<<h<<endl;
cout<<a<<"*"<<b<<"="<<fixed<<setprecision(2)<<s<<endl;
cout<<a<<"/"<<b<<"="<<fixed<<setprecision(2)<<thuong<<endl;
return 0;
}