HDU2003 求绝对值
#include <iostream>
#include <cstdio>
#include <cmath>
using namespace std;
int main()
{
double r;
while(cin >> r)
{
printf("%.2f\n", abs(r));
}
return 0;
}
#include <iostream>
#include <cstdio>
#include <cmath>
using namespace std;
int main()
{
double r;
while(cin >> r)
{
printf("%.2f\n", abs(r));
}
return 0;
}