如何将用户输入的格式设置为整齐的表格，以便在C ++中输出

Question

I am having problems with getting this table to line up correctly, this is a cout statement from my table. My problem is how can I format different things in one line without it messing up the next entry in the line. For example, when I use setprecision(2) for my goldweight, the goldvalue gets messed up and gives me a weird number like 5656e+02

 cout << "                   Value Analysis" <<endl;
cout << "Gold: " << setw(6) <<  "" <<goldweight<< "  Oz @ "<<costgold<<"
("<<setw(1)<<    ""<<carats<<"         Carats) $"<<goldvalue<<endl;

Answer 1

您需要将其重置为下一个输入，例如，如果您已经设置了精度，则将其重新设置（未设置）

    std::cout.unsetf ( std::ios::floatfield );

Answer 2

Yes, setw() , setprecision() , etc will mess up stuff. What you can do is to use temporary std::ostringstream .

#include <sstream>
...
std::ostringstream oss_goldweight ;
std::ostringstream oss_goldvalue ;
std::ostringstream oss_goldcarats ;

oss_goldweight << setw(6) << goldweight ;
oss_goldvalue << setprecision(2) << goldvalue ;
oss_goldcarats << setw(1) << carats ;

and then use oss_goldxyz variables instead of raw values.