Aligning a cin to the right

[kiri]

How to properly use setw with cout and cin
How to align the output of cin to the left by 30

 
cout<<" Example for Cplusplus Forums  ";
cin>> output;


<<setw(33) no idea where to put or how to put the setw properly

[JLBorges]

#include <iostream>
#include <iomanip>

int main()
{
    double d = 123.45678 ;

    std::cout << '|' << std::fixed << std::setprecision(3) << d << "|\n" ; // |123.457|

    std::cout << '|' << std::left << std::setw(15) << d << "|\n" ; // |+123.457       |

    std::cout << std::showpos << std::setfill('0')  ;

    std::cout << '|' << std::left << std::setw(15) << d << "|\n" ; // |+123.4570000000|

    std::cout << '|' << std::right << std::setw(15) << d << "|\n" ; // |0000000+123.457|

    std::cout << '|' << std::internal << std::setw(15) << d << "|\n" ; // |+0000000123.457|
}

http://coliru.stacked-crooked.com/a/b2d1dab33f219291

[kiri]

No I got it for cout, but I am trying to figure out how to align the cin's for example.

cout blah blah

cin                                                23
cin                                                457
cin                                               cplusplus.com

I know this isnt code, I did it for spacing reasons.

I don't know how to do the setw for the cin

[JLBorges]

Formatted input skips leading white space characters.

#include <iostream>
#include <iomanip>
#include <string>

int main()
{
    std::string str ;

    std::cin >> str ; // enter 123456789
    std::cout << str << '\n' ; // 123456789

    std::cin >> std::setw(3) >> str ; // enter 123456789
    // reads "123", "456789\n" remains in the input buffer
    std::cout << str << '\n' ; // 123

    char cstr[32] ;
    std::cin >> std::setw(3) >> cstr ; // we don't need to enter anything; "456789\n" is in the input buffer
    // reads "45" from the input buffer, and appends a null character as the third character
    // "6789\n" remains in the input buffer
    std::cout << cstr << '\n' ; // 45

    std::cin >> std::setw(8) >> str ; // we don't need to enter anything; "6789\n" is in the input buffer
    // reads four characters "6789", formatted input stops when a white space is encountered
    // a new line character remains in the input buffer
    std::cout << str << '\n' ; // 6789

    int n ;
    std::cin >> std::setw(4) >> n ; // enter 123456789
    // setw (width) is ignored for numeric input, reads "123456789" into n
    std::cout << n << '\n' ; // 123456789
}

http://coliru.stacked-crooked.com/a/c47cffda43d83eb9

[kiri]

I am not sure I read any of that correctly. It may still be early for me :-/

I am looking for print fields. ie.

int exp;
cout<<"example here"<<setw(7)<<exp;

example here _ _ _ _ _ exp

or is that all wrong?
But aligning the Cin so its to the right

[kiri]

Anyone have an Idea on how to approach this?

[JLBorges]

What do you want to print? And what should the output look like?
You need to give an example with actual data to be printed and the desired output format.