C++ iomanip Alignment

Question

I'm trying to align my output but for some reason I can't get it to how I want it, and it's really frustrating. The title won't align right. I don't know if I'm using setw() properly.

#include <iostream>
using std::cout;
using std::endl;
#include <string>
using std::string;
#include <assert.h>
#include <iomanip>
using std::setw;
using std::right;
using std::left;

//Movie Struct to hold movie data
struct MOVIES
{
    string Title; //Name of movie
    int CriticRating; //Critic rating 1-100
    int AudRating; //Audiences' rating 1-100
};
MOVIES Movies[10] = { { "The Wizard of Oz", 99 , 70 },
                      { "The Third Man"   , 78, 45 },
                      { "Citizen Kane"    , 86, 85 },
                      { "Charlie Chaplin in Modern Times", 56, 95 },
                      { "All About Eve"   , 78, 94 },
                      { "The Cabinet of Dr. Caligari"    , 76, 90 },
                      { "The God Father"  , 99 , 98 },
                      { "E.T. The Extra-Terrestrial"     , 98 , 71 },
                      { "The Beatles: A Hard Day's Night", 87 , 90 },
                      { "Monty Python and the Holy Grail", 100, 100 }
                    };


void PrintMovies(MOVIES* movies, int numMovies)
{
    cout << "Movies" << endl
         << "Critic" << setw(10)
         << "Audience" << setw(10)
         << "Title" << endl;

    for (int i = 0; i < numMovies; i++)
    {
        cout << setw(6);
        cout << movies[i].CriticRating << right;
        cout << setw(6);
        cout << movies[i].AudRating << right;
        cout << setw(6);
        cout << movies[i].Title << left;
        cout << endl;
    };
}

int main()
{
    PrintMovies(Movies, 10);

    return 0;
}

//Sample Output of what I need

However this is what I'm getting instead

Solution 1

If this is what you want

#include <iomanip>
using std::setw;
using std::right;
using std::left;

//Movie Struct to hold movie data
struct MOVIES
{
    string Title; //Name of movie
    int CriticRating; //Critic rating 1-100
    int AudRating; //Audiences' rating 1-100
};
MOVIES Movies[10] = { { "The Wizard of Oz", 99, 70 },
{ "The Third Man", 78, 45 },
{ "Citizen Kane", 86, 85 },
{ "Charlie Chaplin in Modern Times", 56, 95 },
{ "All About Eve", 78, 94 },
{ "The Cabinet of Dr. Caligari", 76, 90 },
{ "The God Father", 99, 98 },
{ "E.T. The Extra-Terrestrial", 98, 71 },
{ "The Beatles: A Hard Day's Night", 87, 90 },
{ "Monty Python and the Holy Grail", 100, 100 }
};


void PrintMovies(MOVIES* movies, int numMovies)
{
    cout << " Critic " << setw(6) << " Audience " << setw(0) << " Title " << endl;

    for (int i = 0; i < numMovies; i++)
    {
        cout << setw(7) << right << movies[i].CriticRating << setw(10) << right << movies[i].AudRating <<"  "<< setw(30) << left << movies[i].Title << endl;
    }
}

int main()
{
    PrintMovies(Movies, 10);

    return 0;
}

Solution 2

As said in the comments if you want to use std::setw() to set the width, you will have to use it before entering your "value".

For example,

std::cout << "no setw: " << 42 << std::endl;
std::cout << "setw(10): " << std::setw(10) << 42 << std::endl;

Also you will have to set the width between each operator<<.

If you do:

std::cout << std::setw(10) << 42 << "bar" << std::endl;
std:: cout << std::setw(10) << 42 << std::setw(10) << "bar" << std::endl;

you will respectively get the outputs :

________42bar
________42_______bar

Comments

[paddy]

You must set the alignment manipulator before the thing you want aligned. Same with setw. You will need to add some space before the title so it doesn't get jammed against the right-aligned numbers.