题解 - 苏州市吴江区中学生信息编程竞赛域

8
12104陈皆乐 (12104陈皆乐) LV 10 @ 2021-11-05 20:14:40

#include <iostream>
#include<cmath>
#include<iomanip>
using namespace std;
int main()
{
double m;
cin>>m;
if(m>=0)
cout<<setprecision(2)<<fixed<<m;
else
cout<<setprecision(2)<<fixed<<0-m;
return 0;
}
0
12203沈宇阳 (12203沈宇阳) LV 8 @ 2021-12-27 09:38:13

#include<iostream>
#include<iomanip>
using namespace std;
int main(){
double n;
cin>>n;
if(n>=0)cout<<fixed<<setprecision(2)<<n;
else cout<<fixed<<setprecision(2)<<-n;
}
-1
12209水宇辰 (12209水宇辰) LV 9 @ 2021-11-01 16:18:20

#include<iostream>
#include<cstdio>
#include<cmath>
using namespace std;
int main()
{
float n;
cin>>n;
printf("%0.2f",abs(n));
}
-2
12140周泽骁 (12140周泽骁) LV 6 @ 2021-12-25 11:45:56

#include<iostream>
#include<cmath>
#include<iomanip>
using namespace std;
int main()
{

double x;
cin>>x;
if(x>=0)
cout<<fixed<<setprecision(2)<<x<<endl;
else if(x<0)
cout<<fixed<<setprecision(2)<<x-2*x<<endl;

return 0;
}