没有发现这个题错在哪里可是执行结果总是出现一个错误，求解错误如下cpp(15) : error C2018: unknown character '0xcb'
#include <iostream>#include <cmath>
#include <iomanip>
using namespace std;
int main( )
{
double a,b,c;
cout<<"please enter a,b,c：";
cin>>a>>b>>c;
if (a+b>c && b+c>a && c+a>b)
{
double s,area;
s=(a+b+c)/2;
area=sqrt(s*(s-a)*(s-b)*(s-c));
cout<<setiosflags(ios∷fixed)<<setprecision(4);
cout<<"area="<<area<<endl;
}
else cout<<"it is not a trilateral!"<<endl;
return 0;
}
