新手求解··

#include<iostream>
int main()
{
unsigned short quantity;
float price;
float taxRate;
quantity=16;
price=6.04;
taxRate=0.05;
std::cout<<"The cost of purchasing "<<quantity<<" widget(s) at a price of $ "<<price<<",with tax,comes to $";
std::cout<<((quantity*price)+((quantity*price)*taxRate))<<".\n";
return 0;
}
改完了。
std::cout<<((quantity*price)+((quantity*price)*taxRate))<<".\n";
中有个括号错了。注意输入法，