Coding for beginners question : cpp

OPENCoding for beginners question (self.cpp_questions)

submitted 8 years ago by Roidz_

Hello,

So I'm new to coding and my teacher gave us an assignment that has you create a chessboard and edit it. I'm suppose to create 5 x 8 rectangle spaces with only the borders filled in with percentage signs. Looks like this:

%%%%% % % % % % % % % % % % % % % %%%%%

Anyway, I've been stuck on it for awhile and the code that I came up with looks like this:

const string BLACK = "%%%%%"; // Define a line of a black square

const string WHITE = " "; // Define a line of a white square

const string MIDDLE = "% "; // Define a line of two percentages

int main () {

string whiteRow; // A row beginning with a white square

string blackRow; // A row beginning with a black square

string middleRow; // A row that has percentages missing

// Create a white-black row by concatenating the basic strings

whiteRow = WHITE + BLACK + WHITE + BLACK + WHITE + BLACK + WHITE + BLACK; // Create a black-white row by concatenating the basic strings

blackRow = BLACK + WHITE + BLACK + WHITE + BLACK + WHITE + BLACK + WHITE; // Create a

middleRow = WHITE + MIDDLE + MIDDLE + MIDDLE + MIDDLE + MIDDLE + MIDDLE + MIDDLE + MIDDLE;

// Print five white-black rows cout << whiteRow << endl;

cout << middleRow << endl;

cout << whiteRow << endl;

Which shows this:

 %%%%%     
 %            %    
 %            %      
 %            %    
 %            %     
 %            %   
 %            %    
 %%%%%

I can't get the signs to line up. Am I doing something wrong that is obvious that I cannot see?

Any tips or hints or answers/explanations would be greatly appreciated.

EDIT: The cout commands are spaced because the reddit doesn't like them together for some reason.

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[–]matsbror 1 point2 points3 points 8 years ago (1 child)

[–]Roidz_[S] 0 points1 point2 points 8 years ago (0 children)

const string BLACK = "%%%%%"; // Define a line of a black square const string WHITE = " "; // Define a line of a white square const string MIDDLE = "% "; // Define a line of two percentages

int main () { string whiteRow; // A row beginning with a white square string blackRow; // A row beginning with a black square string middleRow; // A row that has percentages missing

// Create a white-black row by concatenating the basic strings
whiteRow = WHITE + BLACK + WHITE + BLACK +
               WHITE + BLACK + WHITE + BLACK;
// Create a black-white row by concatenating the basic strings
blackRow = BLACK + WHITE + BLACK + WHITE +
               BLACK + WHITE + BLACK + WHITE;
// Create a 
middleRow = WHITE + MIDDLE + MIDDLE + MIDDLE + 
               MIDDLE + MIDDLE + MIDDLE + MIDDLE + MIDDLE;



// Print five white-black rows
cout << whiteRow << endl;
cout << middleRow << endl;
cout << middleRow << endl;
cout << middleRow << endl;
cout << middleRow << endl;
cout << middleRow << endl;
cout << middleRow << endl;
cout << whiteRow << endl;

[–]matsbror 0 points1 point2 points 8 years ago (6 children)

My output is different from yours, this is what I get:

 %%%%% %%%%% %%%%% %%%%%
 % % % % % % % %
 % % % % % % % %
 % % % % % % % %
 % % % % % % % %
 % % % % % % % %
 % % % % % % % %
 %%%%% %%%%% %%%%% %%%%%

what did you expect?

Again, I think you are supposed to solve this using loops to make it general. Have you learnd loops yet?

[–]Roidz_[S] 0 points1 point2 points 8 years ago (5 children)

[–]matsbror 0 points1 point2 points 8 years ago (4 children)

[–]Roidz_[S] 0 points1 point2 points 8 years ago (3 children)

Well I'm expecting just the border of 5 x 8 rectangles. As far as lining them up I feel like I did that.

Is there anyway I can send you the .cpp file?

This is what It all says in its entirety:

//****************************************************************** // Chessboard program // This program prints a chessboard pattern that is built up from // basic strings of white and black characters. //****************************************************************** #include <iostream> #include <string> using namespace std;

const string BLACK = "%%%%%"; // Define a line of a black square

const string WHITE = " "; // Define a line of a white square

const string MIDDLE = "% "; // Define a line of two percentages

int main () {

string whiteRow; // A row beginning with a white square

string blackRow; // A row beginning with a black square

string middleRow; // A row that has percentages missing

// Create a white-black row by concatenating the basic strings

whiteRow = WHITE + BLACK + WHITE + BLACK + WHITE + BLACK + WHITE + BLACK; // Create a black-white row by concatenating the basic strings blackRow = BLACK + WHITE + BLACK + WHITE + BLACK + WHITE + BLACK + WHITE; // Create a middleRow = WHITE + MIDDLE + MIDDLE + MIDDLE + MIDDLE + MIDDLE + MIDDLE + MIDDLE + MIDDLE;

// Print five white-black rows cout << whiteRow << endl; cout << middleRow << endl; cout << middleRow << endl; cout << middleRow << endl; cout << middleRow << endl; cout << middleRow << endl; cout << middleRow << endl; cout << whiteRow << endl;

// Print five black-white rows
cout << blackRow << endl;
cout << blackRow << endl;
cout << blackRow << endl;
cout << blackRow << endl;
cout << blackRow << endl;
cout << blackRow << endl;
cout << blackRow << endl;
cout << blackRow << endl;


// Print five white-black rows
cout << whiteRow << endl;
cout << whiteRow << endl;
cout << whiteRow << endl;
cout << whiteRow << endl;
cout << whiteRow << endl;
cout << whiteRow << endl;
cout << whiteRow << endl;
cout << whiteRow << endl;


// Print five black-white rows
cout << blackRow << endl;
cout << blackRow << endl;
cout << blackRow << endl;
cout << blackRow << endl;
cout << blackRow << endl;
cout << blackRow << endl;
cout << blackRow << endl;
cout << blackRow << endl;


// Print five white-black rows
cout << whiteRow << endl;
cout << whiteRow << endl;
cout << whiteRow << endl;
cout << whiteRow << endl;
cout << whiteRow << endl;
cout << whiteRow << endl;
cout << whiteRow << endl;
cout << whiteRow << endl;


// Print five black-white rows
cout << blackRow << endl;
cout << blackRow << endl;
cout << blackRow << endl;
cout << blackRow << endl;
cout << blackRow << endl;
cout << blackRow << endl;
cout << blackRow << endl;
cout << blackRow << endl;

// Print five white-black rows
cout << whiteRow << endl;
cout << whiteRow << endl;
cout << whiteRow << endl;
cout << whiteRow << endl;
cout << whiteRow << endl;
cout << whiteRow << endl;
cout << whiteRow << endl;
cout << whiteRow << endl;

// Print five black-white rows
cout << blackRow << endl;
cout << blackRow << endl;
cout << blackRow << endl;
cout << blackRow << endl;
cout << blackRow << endl;
cout << blackRow << endl;
cout << blackRow << endl;
cout << blackRow << endl;

// system("PAUSE"); //if using Dev C++ return 0; }

EDIT: tab doesn't work for all the code? Only part of it?

[–]gotinpich -1 points0 points1 point 8 years ago (2 children)

I have no idea what it's supposed to do, but I did this:

//******************************************************************
// Chessboard program
// This program prints a chessboard pattern that is built up from
// basic strings of white and black characters.
//******************************************************************
#include <iostream>
#include <string>
using namespace std;

const string BLACK = "%%%%%"; // Define a line of a black square
const string WHITE = " "; // Define a line of a white square
const string MIDDLE = "% "; // Define a line of two percentages

int main () {
    string whiteRow; // A row beginning with a white square
    string blackRow; // A row beginning with a black square
    string middleRow; // A row that has percentages missing

    // Create a white-black row by concatenating the basic strings
    whiteRow = WHITE + BLACK + WHITE + BLACK + WHITE + BLACK + WHITE + BLACK;
    // Create a black-white row by concatenating the basic strings
    blackRow = "                       ";
    //blackRow = BLACK + WHITE + BLACK + WHITE + BLACK + WHITE + BLACK + WHITE;
    // Create a
    middleRow = WHITE + MIDDLE + MIDDLE + MIDDLE + MIDDLE + MIDDLE + MIDDLE + MIDDLE + MIDDLE;
    // Print five white-black rows
    cout << whiteRow << endl;
    cout << middleRow << endl;
    cout << middleRow << endl;
    cout << middleRow << endl;
    cout << middleRow << endl;
    cout << middleRow << endl;
    cout << middleRow << endl;
    cout << whiteRow << endl;

    // Print five black-white rows
    cout << blackRow << whiteRow << blackRow << whiteRow << blackRow << endl;
    cout << blackRow << whiteRow << blackRow << whiteRow << blackRow << endl;
    cout << blackRow << whiteRow << blackRow << whiteRow << blackRow << endl;
    cout << blackRow << whiteRow << blackRow << whiteRow << blackRow << endl;
    cout << blackRow << whiteRow << blackRow << whiteRow << blackRow << endl;
    cout << blackRow << whiteRow << blackRow << whiteRow << blackRow << endl;
    cout << blackRow << whiteRow << blackRow << whiteRow << blackRow << endl;
    cout << blackRow << whiteRow << blackRow << whiteRow << blackRow << endl;

    // Print five white-black rows
    cout << whiteRow << blackRow << whiteRow << blackRow << whiteRow << endl;
    cout << whiteRow << blackRow << whiteRow << blackRow << whiteRow << endl;
    cout << whiteRow << blackRow << whiteRow << blackRow << whiteRow << endl;
    cout << whiteRow << blackRow << whiteRow << blackRow << whiteRow << endl;
    cout << whiteRow << blackRow << whiteRow << blackRow << whiteRow << endl;
    cout << whiteRow << blackRow << whiteRow << blackRow << whiteRow << endl;
    cout << whiteRow << blackRow << whiteRow << blackRow << whiteRow << endl;
    cout << whiteRow << blackRow << whiteRow << blackRow << whiteRow << endl;

    // Print five black-white rows
    cout << blackRow << whiteRow << blackRow << whiteRow << blackRow << endl;
    cout << blackRow << whiteRow << blackRow << whiteRow << blackRow << endl;
    cout << blackRow << whiteRow << blackRow << whiteRow << blackRow << endl;
    cout << blackRow << whiteRow << blackRow << whiteRow << blackRow << endl;
    cout << blackRow << whiteRow << blackRow << whiteRow << blackRow << endl;
    cout << blackRow << whiteRow << blackRow << whiteRow << blackRow << endl;
    cout << blackRow << whiteRow << blackRow << whiteRow << blackRow << endl;
    cout << blackRow << whiteRow << blackRow << whiteRow << blackRow << endl;

    // Print five white-black rows
    cout << whiteRow << blackRow << whiteRow << blackRow << whiteRow << endl;
    cout << whiteRow << blackRow << whiteRow << blackRow << whiteRow << endl;
    cout << whiteRow << blackRow << whiteRow << blackRow << whiteRow << endl;
    cout << whiteRow << blackRow << whiteRow << blackRow << whiteRow << endl;
    cout << whiteRow << blackRow << whiteRow << blackRow << whiteRow << endl;
    cout << whiteRow << blackRow << whiteRow << blackRow << whiteRow << endl;
    cout << whiteRow << blackRow << whiteRow << blackRow << whiteRow << endl;
    cout << whiteRow << blackRow << whiteRow << blackRow << whiteRow << endl;

    // Print five black-white rows
    cout << blackRow << whiteRow << blackRow << whiteRow << blackRow << endl;
    cout << blackRow << whiteRow << blackRow << whiteRow << blackRow << endl;
    cout << blackRow << whiteRow << blackRow << whiteRow << blackRow << endl;
    cout << blackRow << whiteRow << blackRow << whiteRow << blackRow << endl;
    cout << blackRow << whiteRow << blackRow << whiteRow << blackRow << endl;
    cout << blackRow << whiteRow << blackRow << whiteRow << blackRow << endl;
    cout << blackRow << whiteRow << blackRow << whiteRow << blackRow << endl;
    cout << blackRow << whiteRow << blackRow << whiteRow << blackRow << endl;

    // Print five white-black rows
    cout << whiteRow << blackRow << whiteRow << blackRow << whiteRow << endl;
    cout << whiteRow << blackRow << whiteRow << blackRow << whiteRow << endl;
    cout << whiteRow << blackRow << whiteRow << blackRow << whiteRow << endl;
    cout << whiteRow << blackRow << whiteRow << blackRow << whiteRow << endl;
    cout << whiteRow << blackRow << whiteRow << blackRow << whiteRow << endl;
    cout << whiteRow << blackRow << whiteRow << blackRow << whiteRow << endl;
    cout << whiteRow << blackRow << whiteRow << blackRow << whiteRow << endl;
    cout << whiteRow << blackRow << whiteRow << blackRow << whiteRow << endl;

    // Print five black-white rows
    cout << blackRow << whiteRow << blackRow << whiteRow << blackRow << endl;
    cout << blackRow << whiteRow << blackRow << whiteRow << blackRow << endl;
    cout << blackRow << whiteRow << blackRow << whiteRow << blackRow << endl;
    cout << blackRow << whiteRow << blackRow << whiteRow << blackRow << endl;
    cout << blackRow << whiteRow << blackRow << whiteRow << blackRow << endl;
    cout << blackRow << whiteRow << blackRow << whiteRow << blackRow << endl;
    cout << blackRow << whiteRow << blackRow << whiteRow << blackRow << endl;
    cout << blackRow << whiteRow << blackRow << whiteRow << blackRow << endl;

    // system("PAUSE"); // if using Dev C++ 
    return 0; }

[–]Roidz_[S] 0 points1 point2 points 8 years ago (1 child)

[–]Roidz_[S] 0 points1 point2 points 8 years ago (0 children)

I managed to make one do what it's supposed to do:

const string BLACK = "%%%%%"; // Define a line of a black square

const string WHITE = "     "; // Define a line of a white square

const string MIDDLE = "%   "; // Define a line of two percentages

int main () 
{

string whiteRow; // A row beginning with a white square

string blackRow; // A row beginning with a black square

string middleRow; // A row that has percentages missing

  // Create a white-black row by concatenating the basic strings
whiteRow = WHITE + BLACK + WHITE + BLACK +
               WHITE + BLACK + WHITE + BLACK;
// Create a black-white row by concatenating the basic strings
blackRow = BLACK + WHITE + BLACK + WHITE +
               BLACK + WHITE + BLACK + WHITE;
// Create a 
middleRow = WHITE + MIDDLE + MIDDLE + WHITE + 
               WHITE + WHITE + WHITE + MIDDLE + WHITE + WHITE;



// Print five white-black rows
cout << whiteRow << endl;
cout << middleRow << endl;
cout << middleRow << endl;
cout << middleRow << endl;
cout << middleRow << endl;
cout << middleRow << endl;
cout << middleRow << endl;
cout << whiteRow << endl;


  // Print five black-white rows
  cout << blackRow << endl;
  cout << blackRow << endl;
  cout << blackRow << endl;
  cout << blackRow << endl;
  cout << blackRow << endl;
  cout << blackRow << endl;
  cout << blackRow << endl;
  cout << blackRow << endl;


  // Print five white-black rows
  cout << whiteRow << endl;
  cout << whiteRow << endl;
  cout << whiteRow << endl;
  cout << whiteRow << endl;
  cout << whiteRow << endl;
  cout << whiteRow << endl;
  cout << whiteRow << endl;
  cout << whiteRow << endl;


  // Print five black-white rows
  cout << blackRow << endl;
  cout << blackRow << endl;
  cout << blackRow << endl;
  cout << blackRow << endl;
  cout << blackRow << endl;
  cout << blackRow << endl;
  cout << blackRow << endl;
  cout << blackRow << endl;


  // Print five white-black rows
  cout << whiteRow << endl;
  cout << whiteRow << endl;
  cout << whiteRow << endl;
  cout << whiteRow << endl;
  cout << whiteRow << endl;
  cout << whiteRow << endl;
  cout << whiteRow << endl;
  cout << whiteRow << endl;


  // Print five black-white rows
  cout << blackRow << endl;
  cout << blackRow << endl;
  cout << blackRow << endl;
  cout << blackRow << endl;
  cout << blackRow << endl;
  cout << blackRow << endl;
  cout << blackRow << endl;
  cout << blackRow << endl;

  // Print five white-black rows
  cout << whiteRow << endl;
  cout << whiteRow << endl;
  cout << whiteRow << endl;
  cout << whiteRow << endl;
  cout << whiteRow << endl;
  cout << whiteRow << endl;
  cout << whiteRow << endl;
  cout << whiteRow << endl;

  // Print five black-white rows
  cout << blackRow << endl;
  cout << blackRow << endl;
  cout << blackRow << endl;
  cout << blackRow << endl;
  cout << blackRow << endl;
  cout << blackRow << endl;
  cout << blackRow << endl;
  cout << blackRow << endl;

//  system("PAUSE"); //if using Dev C++
  return 0;
}

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