I'm printing random numbers enclosed in ascii boxes in a 6x6 grid. Having issues with printing out the grid.
Instead of having 6 columns, all my boxes and numbers are being printed out in 1 column. Been troubleshooting but cant seem to find the issue. Below is the code. Appreciate your assistance.
int main(void)
{
cout << "Magic Grid\n" << endl;
int arrayxy [6][6];
srand((unsigned)time(0));
int lowest=1111, highest=9999;
int range=(highest-lowest)+1;
// Fill array with random values
for (int i = 0; i < 6; ++i)
{
for(int j = 0; j < 6; ++j)
{
arrayxy[i][j] = lowest+int(range*rand()/(RAND_MAX + 1.0));
}
}
// Print array as grid
for (int i = 0; i < 6; ++i)
{
for(int j = 0; j < 6; ++j)
{
cout << char(218);
for (int y=0; y< 4; y++)
{
cout << char(196);
}
cout << char(191) <<endl;
cout << char(179) << arrayxy[i][j] << char(179) << endl;
cout << char(192);
for (int z=0; z< 4; z++)
{
cout << char(196);
}
cout << char(217) <<endl;
}
cout << endl;
}
cout << endl;
}
You should endl after all the columns get printed out, NOT before.
This is how I fixed your code that gives, hopefully, what you wanted to have.
For the record, I specifically changed those ASCII to * and & to make the console result more readable. You can change them back to what you want those characters to be again.
void WriteFrontLine(std::size_t count)
{
for (int i = 0; i < count; i++)
{
cout << '*';
cout << '&' << '&' << '&' << '&';
cout << '*';
}
cout << endl;
}
void WriteEndLine(std::size_t count)
{
for (int i = 0; i < count; i++)
{
cout << '*';
cout << '&' << '&' << '&' << '&';
cout << '*';
}
cout << endl;
}
int main(void)
{
cout << "Magic Grid\n" << endl;
int arrayxy[6][6];
srand((unsigned)time(0));
int lowest = 1111, highest = 9999;
int range = (highest - lowest) + 1;
// Fill array with random values
for (int i = 0; i < 6; ++i)
{
for (int j = 0; j < 6; ++j)
{
arrayxy[i][j] = lowest + int(range*rand() / (RAND_MAX + 1.0));
}
}
// Print array as grid
for (int i = 0; i < 6; ++i)
{
WriteFrontLine(6);
for (int j = 0; j < 6; ++j)
{
cout << '*' << arrayxy[i][j] << '*';
}
cout << endl;
WriteEndLine(6);
cout << endl;
}
cout << endl;
}
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I have written next code but 3 functions must be replaced by 1 and I don't know how to.
The program creates 3 arrays but only 1 function must calculate negative numbers of each column and find the max element in each column. Here's the code:
#include <iostream>
#include <ctime>
#include <iomanip>
using namespace std;
int n = 0;
const int m = 3, k = 3, b = 4, u = 5;
int i, j;
void calc(float** array, int i, int j );
void calc1(float** array, int i, int j);
void calc2(float** array, int i, int j);
int main()
{
float** array = new float* [m];
for (int l = 0; l < m; l++) {
array[l] = new float[k];
}
// заполнение массива
srand(time(0));
for (int i = 0; i < m; i++) {
for (int j = 0; j < k; j++) {
array[i][j] = rand() % 21 - 10;
}
}
cout << "The initial array is: " << endl << endl;
for (int i = 0; i < m; i++)
{
for (int j = 0; j < k; j++) {
cout << setprecision(2) << setw(4) << array[i][j] << " ";
}
cout << endl;
}
cout << endl << "The amount of negative elements in each column: ";
calc(array, i, j); // FUNCTION !!!
float** arr = new float* [b];
for (int l = 0; l < b; l++) {
arr[l] = new float[b];
}
// заполнение массива
srand(time(0));
for (int i = 0; i < b; i++) {
for (int j = 0; j < b; j++) {
arr[i][j] = rand() % 21 - 10;
}
}
cout << "The initial array is: " << endl << endl;
for (int i = 0; i < b; i++)
{
for (int j = 0; j < b; j++) {
cout << setprecision(2) << setw(4) << arr[i][j] << " ";
}
cout << endl;
}
cout << endl << "The amount of negative elements in each column: ";
calc(arr, i, j); // FUNCTION !!!
float** ar = new float* [u];
for (int l = 0; l < u; l++) {
ar[l] = new float[u];
}
// заполнение массива
srand(time(0));
for (int i = 0; i < u; i++) {
for (int j = 0; j < u; j++) {
ar[i][j] = rand() % 21 - 10;
}
}
cout << "The initial array is: " << endl << endl;
for (int i = 0; i < u; i++)
{
for (int j = 0; j < u; j++) {
cout << setprecision(2) << setw(4) << ar[i][j] << " ";
}
cout << endl;
}
cout << endl << "The amount of negative elements in each column: ";
calc2(ar, i, j); // FUNCTION !!!
}
void calc(float** array, int i, int j) {
int max = array[0][0];
for (int j = 0; j < k; j++)
{
max = array[0][0];
for (int i = 0; i < k; i++) {
if (array[i][j] > max)
max = array[i][j];
if (array[i][j] < 0) {
n += 1;
}
}
cout << endl << "IN the [" << j + 1 << "] column is " << n << " negative elements" << endl << endl; n = 0;
cout << "IN the [" << j + 1 << "] column is " << max << " maximal element" << endl;
}
}
void calc1(float** arr, int i, int j) {
int max = arr[0][0];
for (int j = 0; j < b; j++)
{
max = arr[0][0];
for (int i = 0; i < b; i++) {
if (arr[i][j] > max)
max = arr[i][j];
if (arr[i][j] < 0) {
n += 1;
}
}
cout << endl << "IN the [" << j + 1 << "] column is " << n << " negative elements" << endl << endl; n = 0;
cout << "IN the [" << j + 1 << "] column is " << max << " maximal element" << endl;
}
}
void calc2(float** ar, int i, int j) {
int max = ar[0][0];
for (int j = 0; j < u; j++)
{
max = ar[0][0];
for (int i = 0; i < u; i++) {
if (ar[i][j] > max)
max = ar[i][j];
if (ar[i][j] < 0) {
n += 1;
}
}
cout << endl << "IN the [" << j + 1 << "] column is " << n << " negative elements" << endl << endl; n = 0;
cout << "IN the [" << j + 1 << "] column is " << max << " maximal element" << endl;
}
}
The parameters to calc() should be the number of rows and columns in the array. Then it should use these as the limits in the for loops.
Also, since you're calculating total negative and maximum for each column, you must reset these variables each time through the column loop.
#include <iostream>
#include <ctime>
#include <iomanip>
using namespace std;
const int m = 3, k = 3, b = 4, u = 5;
void calc(float** array, int rows, int cols);
int main()
{
float** array = new float* [m];
for (int l = 0; l < m; l++) {
array[l] = new float[k];
}
// заполнение массива
srand(time(0));
for (int i = 0; i < m; i++) {
for (int j = 0; j < k; j++) {
array[i][j] = rand() % 21 - 10;
}
}
cout << "The initial array is: " << endl << endl;
for (int i = 0; i < m; i++)
{
for (int j = 0; j < k; j++) {
cout << setprecision(2) << setw(4) << array[i][j] << " ";
}
cout << endl;
}
cout << endl << "The amount of negative elements in each column: ";
calc(array, m, k); // FUNCTION !!!
float *arr = new float* [b];
for (int l = 0; l < b; l++) {
arr[l] = new float[b];
}
// заполнение массива
srand(time(0));
for (int i = 0; i < b; i++) {
for (int j = 0; j < b; j++) {
arr[i][j] = rand() % 21 - 10;
}
}
cout << "The initial array is: " << endl << endl;
for (int i = 0; i < b; i++)
{
for (int j = 0; j < b; j++) {
cout << setprecision(2) << setw(4) << arr[i][j] << " ";
}
cout << endl;
}
cout << endl << "The amount of negative elements in each column: ";
calc(arr, b, b); // FUNCTION !!!
float** ar = new float* [u];
for (int l = 0; l < u; l++) {
ar[l] = new float[u];
}
// заполнение массива
srand(time(0));
for (int i = 0; i < u; i++) {
for (int j = 0; j < u; j++) {
ar[i][j] = rand() % 21 - 10;
}
}
cout << "The initial array is: " << endl << endl;
for (int i = 0; i < u; i++)
{
for (int j = 0; j < u; j++) {
cout << setprecision(2) << setw(4) << ar[i][j] << " ";
}
cout << endl;
}
cout << endl << "The amount of negative elements in each column: ";
calc(ar, u, u); // FUNCTION !!!
}
void calc(float** array, int rows, int cols) {
for (int j = 0; j < cols; j++)
{
int n = 0;
int max = array[0][j];
for (int i = 1; i < rows; i++) {
if (array[i][j] > max)
max = array[i][j];
if (array[i][j] < 0) {
n += 1;
}
}
cout << endl << "IN the [" << j + 1 << "] column is " << n << " negative elements" << endl << endl; n = 0;
cout << "IN the [" << j + 1 << "] column is " << max << " maximal element" << endl;
}
}
When I run the program, I get lines in between the elements of my 2d array.
How do I get rid of them? I meant to have empty values
cout << " ";
for (int i = 0; i < 10; i++)
cout << i << " ";
cout << endl;
for (int i = 0; i < 10; i++)
{
cout << i << " ";
for (int j = 0; j < 10; j++)
{
cout << grid[i][j] << " ";
}
cout << endl;
}
Doing char grid[MAX_ROWS][MAX_COLS]; is not an initialization, it just creates the grid with garbage inside it. If you want to have empty spaces you have to do something like:
for (size_t i = 0; i < MAX_ROWS; i++) {
for(size_t j = 0; j < MAX_COLS; j++) {
grid[i][j] = ' ';
}
}
I want to compare elements for each line of a matrix, from smallest to biggest.
But I don't want to print the sorted array I want to print the original position.
0 11.80 79.34 78.23
11.80 0 65.23 45.19
79.34 65.23 0 90.27
78.23 45.19 90.27 0
In this Matrix for the first line I wanna print 1, 2, 4, 3
My Code so far:
#include <iostream>
#include <fstream>
#include <iomanip>
using namespace std;
int main() {
string dummy;
double myArray[4][4];
int i;
int j;
int y;
ifstream infile("dist.dat");
cout << "Open file " << "dist.dat" <<" for reading." << endl;
for (i = 0; i < 4; i++) {
for (j = 0; j < 4; j++) {
infile >> myArray[i][j];
if (!infile) {
cout << "***There was a problem trying to read element [" << i << "][" << j << "]" << endl;
return 0;
}
}
}
infile.close();
cout << "Here's the array from the file" << endl;
cout << fixed << setprecision(2);
for (i = 0; i < 4; i++) {
for (j = 0; j < 4; j++) {
cout << setw(10) << myArray[i][j];
}
cout << endl;
}
cout << endl;
int x = myArray[i][j];
for (i = 0; i < 4; i++) {
for (j = 0; j < 4; j++) {
if(myArray[i][j] >= x) {
x = j;
}
else {
x = j + 1;
}
}
cout << x << endl;
}
return 0;
}
You need to maintain another matrix which has indices of every line and then apply the same operations on it that you are applying on each line of the original matrix to sort it.
Here is the code:
#include <iostream>
#include <fstream>
#include <iomanip>
using namespace std;
void swap(int &x, int &y)
{
int temp = x;
x = y;
y = temp;
}
void swap(double &x, double &y)
{
double temp = x;
x = y;
y = temp;
}
int main()
{
string dummy;
double myArray[4][4];
int i;
int j;
int y;
int k;
ifstream infile("dist.dat");
cout << "Open file " << "dist.dat" <<" for reading." << endl;
for (i = 0; i < 4; i++)
{
for (j = 0; j < 4; j++)
{
infile >> myArray[i][j];
if (!infile)
{
cout << "***There was a problem trying to read element [" << i << "][" << j << "]" << endl;
return 0;
}
}
}
infile.close();
cout << "Here's the array from the file" << endl;
cout << fixed << setprecision(2);
for (i = 0; i < 4; i++)
{
for (j = 0; j < 4; j++)
{
cout << setw(10) << myArray[i][j];
}
cout << endl;
}
cout << endl;
int sortedIndices[4][4];
for (i = 0; i < 4; i++)
{
for (j = 0; j < 4; j++)
{
sortedIndices[i][j] = j+1;
}
}
int x;
for (i = 0; i < 4; i++)
{
for (j = 0; j < 4; j++)
{
x = j;
for(k = j+1; k < 4; k++)
{
if(myArray[i][k] < myArray[i][x])
{
x = k;
}
}
swap(sortedIndices[i][j], sortedIndices[i][x]);
swap(myArray[i][j], myArray[i][x]);
}
}
for (i = 0; i < 4; i++)
{
for (j = 0; j < 4; j++)
{
cout << setw(10) << sortedIndices[i][j];
}
cout<<endl;
}
return 0;
}
i wanna print a X with * , i have done the left side of the X but i don't know how to print the other side (flip/mirror) .
if you run this codes it will print just the left side of (X) and now i wanna print the right side of (X) ? so what should i do to complete the (X) using stars(*)? thank you guys.
i was wondering is it possible to do this?(i'm a newbie to programming)
#include <iostream>
// Expected output pattern:
//
// * *
// * *
// * *
// *
// * *
// * *
// * *
using namespace std;
int main() {
cout << "Printing X with star(*)" << endl;
cout << endl;
int i;
int p;
for (i = 1; i <= 10; i++) {
for (int j = 1; j <= 10; j++) {
if (j > i) break;
cout << " ";
cout << "\t";
}
cout << "\t\t\t\t";
for (p = 1; p <= 10; p++) {
cout << "*";
}
cout << endl;
}
for (i = 10; i >= 1; i--) {
for (int j = 1; j <= 10; j++) {
if (j > i) break;
cout << " ";
cout << "\t";
}
cout << "\t\t\t\t";
for (p = 1; p <= 10; p++) {
cout << "*";
}
cout << endl;
}
return 0;
}
You're on the right track, to do the right hand side you have to print more **** on each line in addition to what you already have done. It might help to think of printing each line of the X as printing some **** then some spaces then more **** and reduce the number of spaces each time you get closer to the cross-over point. Does that make sense? This might help get you further (. = space):
*......*
.*....*
..*..*
...**
and so on
This is one of many ways you could get there:
int main()
{
int size = 8;
int spacesBefore;
int spacesBetween = size;
int numStars = 1;
// Top half:
int i, j;
for ( i = 0; i < size/2; i++ ) {
spacesBetween = size - ( 2 * ( i + 1 ) );
spacesBefore = i;
for ( j = 0; j < spacesBefore; j++ ) // before
cout << " ";
for ( j = 0; j < numStars; j++ ) // * left
cout << "*";
for ( j = 0; j < spacesBetween; j++ ) // between
cout << " ";
for ( j = 0; j < numStars; j++ ) // * right
cout << "*";
cout << endl;
}
// bottom half, do the same kind of thing but changing the spacings
// ...
}
ok thank you every one that helped me , i found the answer i wanted after almost 6 hours and here is the answer:
#include <iostream>
using namespace std;
int main() {
cout << "Printing X with stars" << endl;
cout << endl;
int i;
int p;
int k;
int s;
int count = 72;
for (i = 1; i <= 10; i++) {
for (int j = 1; j <= 10; j++) {
if (j > i) break;
cout << " ";
cout << "\t";
}
cout << "\t\t\t\t";
for (p = 1; p <= 10; p++) {
cout << "* ";
}
for (k=1; k<=count; k++){
cout << " ";
}
count-=8;
for (s=1; s<=10; s++){
cout << "* ";
}
cout << endl;
}
count = 0;
for (i = 10; i >= 1; i--) {
for (int j = 1; j <= 10; j++) {
if (j > i) break;
cout << " ";
cout << "\t";
}
cout << "\t\t\t\t";
for (p = 1; p <= 10; p++) {
cout << "* ";
}
for (k=1; k<=count; k++) {
cout << " ";
}
count +=8;
for (s=1; s<=10; s++){
cout << "* ";
}
cout << endl;
if (count == 80) break;
}
return 0;
}
I'm having trouble generating and inserting numbers inside the Board. Here is what I have so far:
enter code here
#include <iostream>
#include <string>
#include <cstring>
#include <vector>
using namespace std;
bool Valid_Set(int line[])
{
bool found = true;
for (int t = 1; (t <= 9 && found); ++t)
{
found = false;
for (int i = 0; i < 9; ++i)
if (line[i] == t) found = true;
}
return found; // returns true if all value 1-9 are in array.
}
bool Valid_Matrix(int sud[9][9])
{
int i, j, check[9];
bool valid = true;
// check each row
for (j = 0; (j < 9) && valid; ++j)
{
for (i = 0; i < 9; ++i)
check[i] = sud[i][j];
valid = Valid_Set(check);
}
// check each column
for (j = 0; (j < 9) && valid; ++j)
{
for (i = 0; i < 9; ++i)
check[i] = sud[j][i];
valid = Valid_Set(check);
}
// check 3x3 area
for (i = 0; (i < 9) && valid; i += 3)
{
for (j = 0; (j < 9) && valid; j += 3)
{
int t = 0;
for (int x = 0; x < 3; ++x)
for (int y = 0; y < 3; ++y)
check[t++] = sud[x + i][y + j];
valid = Valid_Set(check);
}
}
return valid;
}
void numGenerator(int A[]){
for (int i=0; i<9; i++){
A[i]=(1+rand()%9);
}
}
bool check_for_validity(int A[]){
int counter=0;
while (counter!=9){
numGenerator(A);
counter++;
}
for (int i=0; i<9; i++)
for (int j=0; j<9; j++){
if(A[j]==A[i])
numGenerator(A);
}
return true;
}
void main (){
//Descriptions and genral ideas
cout << "WELCOME TO SUDOKU " << endl;
cout << endl;
cout << "RULES: "<< endl;
cout << endl;
cout << "->You'll be given a 9x9 board with some numbers depending on which level of difficulty you choose to play."<< endl;
cout << endl;
cout << "->You have to arrange numbers from 1 to 9 so that a number shows up once in one row, one column and in a 3x3 box." << endl;
cout << endl;
cout << "So, let's get started" << endl;
cout << endl;
cout <<endl;
char dash[9][9];
for (int array=0; array<9; array++) {
for (int array2=0; array2<9; array2++) {
dash[array][array2]='_';
}
}
char row[9];
char column[9];
int num[81];
int num2[9][9];
int length;
length=strlen(row);
//Replaces the _'s in the specified rows/columns and replaces them with the integer the user specified.
for (int i=0; i<length; i++) {
dash[row[i]][column[i]]=num[i]+'0';
}
//Builds the Sudoko board and outputs the full 9x9 array.
cout << " 0 1 2 3 4 5 6 7 8 " << endl;
cout << "-----------------------------------------" << endl;
int i=0;
for (int count=0; count<3; count++) {
for (int count2=0; count2<3; count2++) {
cout << "||_" << dash[count][count2*3] << "_|_" << dash[count][count2*3+1] << "_|_" << dash[count][count2*3+2] << "_";
}
cout << "||" << i << endl;
i++;
}
cout << "-----------------------------------------" << endl;
int j=3;
for (int count=3; count<6; count++) {
for (int count2=0; count2<3; count2++) {
cout << "||_" << dash[count][count2*3] << "_|_" << dash[count][count2*3+1] << "_|_" << dash[count][count2*3+2] << "_";
}
cout << "||" << j << endl;
j++;
}
cout <<"-----------------------------------------" << endl;
int z=6;
for (int count=6; count<9; count++) {
for (int count2=0; count2<3; count2++) {
cout << "||_" << dash[count][count2*3] << "_|_" << dash[count][count2*3+1] << "_|_" << dash[count][count2*3+2] << "_";
}
cout << "||" << z << endl;
z++;
}
cout << "-----------------------------------------" << endl;
for (int row = 0; row < 9; row++) {
cout << "Enter values for row " << row + 1 << " : ";
for (int col = 0; col < 9; col++)
cin >> dash[row][col];
cout << endl << endl;
}
system("pause");
}
This whole section is wrong
char row[9];
char column[9];
int num[81];
int num2[9][9];
int length;
length=strlen(row);
//Replaces the _'s in the specified rows/columns and replaces them with the integer the user specified.
for (int i=0; i<length; i++) {
dash[row[i]][column[i]]=num[i]+'0';
}
You are using row and column even though they haven't got any values. Most likely this will crash your program.
Hard to know what you expected this to do. Perhaps you could explain?
Here's a suggestion for inputing values. Maybe you'll find it useful
// get the user's values
int row, column, value;
cout << "Enter a row number, column number, and value. All numbers should be between 1 and 9\n";
cin >> row >> column >> value;
// put the value in the board, add '0' to convert the integer to a digit
dash[row][column] = value + '0';