C/C++ :: How To Sum Rows In 2D Array

Dec 4, 2014

I have a code that working well and find 2D arrays . I want to sum my rows and create 1D array . but not working .

for ( int i = 0 ; i < cins ; i++ ){
for (int j=1 ; j < saft.size() ; j++) {
if (ustk[i] > saft[j] && saft[j-1] > ustk[i]){ //some calculations working well.
tyy[i][j] = ((ustk[i] - saft[j])*yy[i]);
}else if (saft[j-1] <= ustk[i] && saft [j] >= altk[i]){

[Code]...

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C :: How To Compare 2D Array Rows Separately

Nov 1, 2013

I am trying to write a program that prints a 2d array to the screen and then compares each row and column to see if there is any pairs of letters. basically something that looks like this:

---------------------------
V T A Y U C B
D F W Q Q C R
D A L Y M F G
O A S S D T I

Number of horizontal pairs: 2
Number of vertical pairs: 3
---------------------------

so far this is my code below, but i dont know how to approach the comparisons

Code:

#include<stdio.h>
#include<stdlib.h>
#include<time.h>
int main( void )

[code]....

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C++ :: How To Get Sum Of Rows And Columns In 2 Dimensional Array

Aug 2, 2014

Here's my code for adding the rows and columns. My problem is that my program displays an incorrect output.

main() {
int a[20][20],r,c,y,x,sum=0,rn,cn,cs=0,rs=0;
cout<<"Enter number of columns : ";
cin>>cn;

[Code] .....

This should be the output
Enter number of columns: 4
Enter number of rows: 3
Enter twelve numbers: 9 2 3 4 2 3 1 2 5 6 7 8

The numbers are:
9234
2312
5678
Sum of number 1 column is: 16
Sum of number 2 column is: 11
Sum of number 3 column is: 11
Sum of number 4 column is: 14
Sum of number 1 row is: 18
Sum of number 2 row is: 8
Sum of number 3 row is: 26

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C++ :: Display Rows Up To N Using Print Array Function

May 25, 2013

the value of C(k,n) are known as the binomial coeficient and can be arranged in triangle that was known as pascal triangle.

i was been asked to create a program that can display rows up to n=9 using print array function.

C(k,n) = C(k-1,n-1) + C(k,n-1)

how should i start?

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Visual C++ :: Multidimensional Array Having 3 Rows And 8 Columns - Bubble And Selection Sort

Feb 19, 2014

You will write a program that uses a multidimensional array having 3 rows and 8 columns and sorts each of the rows using both a bubble sort and a selection sort.

You must declare the array inside of main. You will have a for loop containing the calls to bubbleSort and selectionSort. You need to pass into function bubbleSort and selectionSort the following: 1) each column of the multidimensional array, 2) the size of the column, and 3) a particular row number of the multidimensional array to be used for printing out the "pass" shown on the following pages.

I keep getting an error that the identifier for bubbleSort and selectionSort is not found. (Error C3861)

Also, I feel like I'm missing something in int main() to get it to sort properly.

Code:
# include <iostream>
using namespace std;
int main() {
const int SIZE1 = 3;
const int SIZE2 = 8;
int arr [SIZE1][SIZE2] = { { 105, 102, 107, 103, 106, 100, 104, 101 },

[Code] ....

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C :: Array Add Total Rows And Total Columns

Apr 16, 2013

Code: i am trying to display the information in the array as a table and add the total rows and the total colums separately

#include<stdio.h>
int main(void)
{
int row, col;

[Code].....

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C :: Creating Rows And Columns

Mar 6, 2015

how to make the it all work later...but in the mean time how can i get this to display this? Note it has to be made using as a console program. The "Description" and "Cost/ib" collums will be referenced through use of a header file. all else is done by user input and calculations.

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C/C++ :: Columns And Rows For Loops?

Feb 26, 2015

I'm having trouble trying to get my loop program to display multiples of 4 in rows and columns. My objective is to print multiples of 4 that are less than 100 in a 4 by 4 format.

So far when I write the code I get 4 8 12 16 20 .... 96 all on the same line.

This is what I expect the code to look like if done correctly.

4 8 12 16
20 24 28 32
36 40 44 48
52 56 60 64
68 72 76 80
84 88 92 96

This is code that I have so far.

#include <iostream>
using namespace std;
int main(){

[Code]....

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C/C++ :: Swap Value Of Two Rows In A Matrix Among Themselves

Mar 21, 2015

I want to swap the value of two rows in matrix among themselves, the index of rows are user defined.

void swapRows(int matrix[M][N], int m, int n, unsigned short R1, unsigned short R2) {
for (int i=0; i<m; i++) {
for (int j=0; j<n; j++) {
//dunno what to put in here

[Code] .....

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C++ :: How To Match Two Rows Of Data And Return Only 1 Value

Aug 1, 2013

I've got two columns of data.

Code:
int a[6]={1,3,5,8,10,12};
int b[3]={3,5,9};
int c[6]={0}; if a is equal to ANY of the data in b, then c= a*2
if a isn't equal to any of the data in b, then c=a.

Here is the answer I want

Code:
c[6]={1,6,10,8,10,12}

I tried using two for loop, but it isn't correct.....

Code:
int a[6]={1,3,5,8,10,12};
int b[3]={3,5,9};
int c[6]={0};

for(int i=0;i<6;++i){

[Code] ....

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C :: How To Print Largest Number From 5 Rows

Sep 26, 2013

i want to print Largest number from any 5 rows.Th number printed should be any one of the largest in the five rows of 2d arrays.I have created code for largest number in each row but how to pick and print them randomly?.

Code:

#include<conio.h>
main( )
{
int a,b,c,d,e,x;
int arr[] = {a,b,c,d,e};
int Matrix[5][5] ={ /*Initializing array*/
2,4,3,5,9,
6,8,2,2,10,

[Code]...

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C++ ::  how To Count Rows And Columns From File

Sep 2, 2014

So I made a text file which goes like this

word word word word
word word word word word word word
word word word word word
word word word word

(word is actually word I just didnt type them)

Now i figured out how to get the rows to work

#include <iostream>
#include <fstream>
#include <istream>
#include <stdio.h>
int main()
{
FILE* fp;
int countLines = 1;
int i;

[Code]...

I cant figure out column to work... Is it the same method cause im getting confused a lot!

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C++ ::  Columns And Rows In Text File

Dec 21, 2014

How i draw such a thing in .TXT file using file handling. This output must be in columns and rows and in well arranged form.

No. Name Roll No. Physic Math Compuer Science Islamiyat Pak Studies Average Grade
1 Student Name 12345 50 60 70 76 90 81 A
2 Student Name 12345 55 52 50 80 58 55 C
3 Student Name 12345 85 66 90 88 77 75 B
4 Student Name 12345 40 70 91 45 56 85 A
5 Student Name 12345 30 80 80 55 93 45 D

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C++ :: Summing Numbers In Grid Rows

May 1, 2014

I have to make a grid 40 X 40 with random numbers 0-9. I have already done this and it prints out great. My problem is I need to be able to choose a row number and output the sum of the number in that row. Here is what I have so far.

#include <iostream>
using namespace std;
int main(){
int Values[40][40];
int rows, cols;

[Code] ....

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C# :: How To Retrieve All Rows In Database Using List

Feb 17, 2014

I wanted to retrieve all rows from database and display in listview using list<string>

con.Open();
MySqlCommand view = new MySqlCommand("Select Cust_ID,Fname,Mname from Customer;", con);
MySqlDataReader v1 = view.ExecuteReader();
while (v1.Read()) {
for (int i = 0; i < v1.FieldCount; i++){
result.Add(v1["Cust_ID"].ToString());

[Code] .....

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C# :: Width And Height For Column And Rows

Mar 21, 2014

Basically when I type in different widths and heights for the col and rows, the buttons that make up the width get cut off. Something is messed up but I'm not sure what!

InitializeComponent();
int _col = int.Parse(cols);
int _row = int.Parse(rows);
int width = groupBox1.Width;
int height = groupBox1.Height;
int bW = width / _col;
int bH = height / _row;

[Code] ....

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C/C++ :: Program To Sum Rows And Columns Of A Matrix?

Apr 23, 2014

Im using apmatrix and im inputting values into a 4 by 4 matrix and im getting all these errors that have nothing to do with my cpp file so im guessing its apmatrixies fault. Also I put in the cpp and header file of both apmatrix and apvector into my project folder. Heres my code:

// Libraries
#include "apmatrix.h"
#include <iostream>
//cout, standard output
// <<, stream insertion operator

[code]....

My errors are:

error C1189: #error : The C++ Standard Library forbids macroizing keywords. Enable warning C4005 to find the forbidden macro.c:program filesmicrosoft visual studio 11.0vcincludexkeycheck.h2421TheMatrix

4IntelliSense: identifier "EMIT" is undefinedc:Program FilesMicrosoft Visual Studio 11.0VCincludeyvals.h4911TheMatrix

and a bunch are repeated

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C/C++ :: How To Sort A Table By Rows / Columns

Oct 5, 2014

I am trying to sort a Report Table by which the user can enter any column or row number and output the results. And also sort by names as well. And from my code

#include "stdafx.h"
#include<iostream>
#include <string>
#include<iomanip>
using namespace std;
#include <stdlib.h> /* srand, rand */
#include <time.h> /* time */

[Code] .....

I know I need to start somewhere with a void function and put in a selection sort.

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C# :: How To Count Number Of Rows Returned By SQL

Jan 29, 2014

I want know if the query returned zero rows or not.

Don't want to use count(*)

sql = "select * from TABLE where employeefirstname = @First order by EmploymentStatusDescription";
using (SqlCommand cmd = new SqlCommand(sql, conn)) {
cmd.Parameters.AddWithValue("@First", First);
reader = cmd.ExecuteReader();
} while (reader.Read())

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C# :: Expand / Collapse Rows In Datagrid?

Oct 8, 2012

how to create e button in Datagrid for each row with the function to Expand/Collapse when it is clicked.

I want to show some data for the row where the button is clicked.

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C# :: How To Get Program To Keep On Adding Rows To Datagrid

Jul 6, 2014

I want to be able to keep on adding a row to my datagrid every time i click a button, the row will hold the text of the text box and the combobox in its individual cells, is there a way to do this without inserting a ridiculous amount of code?

Attached image(s)

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C Sharp :: How To Update All Rows Using Text Box

Sep 12, 2014

I retrieve all the row values from database into text box.But I could not Update it.It shows error message is : The variable name '@value' has already been declared. Variable names must be unique within a query batch or stored procedure. Must declare the scalar variable "@keyValue".

my code is here:

public partial class ECB_ECBConfiguration : System.Web.UI.Page {
    protected void Page_Load(object sender, EventArgs e) {
        DataTable dt = ECBDal.GetECBConfiguration();
       foreach(DataColumn col in dt.Columns) 
  
[Code] ....

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C Sharp :: Delete Rows In Gridview

Jun 3, 2013

I am having a problem with deleting gridview rows. I am populating my gridview by selecting value in a dropdownlist then by clicking the add button, value will be added in my gridview, here is my code:

In my aspx:

<asp:GridView ID="GridView1" runat="server" 
                CssClass="mGrid" EmptyDataText = "There are no records to display">
                <Columns>
                    <asp:TemplateField ItemStyle-Width="10">
            <HeaderTemplate>  
            </HeaderTemplate>
            <ItemTemplate>
                <asp:CheckBox ID="CheckBox1" runat="server"/>
 
[Code] ....

With the btnRemove codes above, If I clicked it, it'll remove all values in my gridview even the unchecked rows, what I want is that just the checked rows not all. And are there any other simple way of removing rows in a gridview than using checkbox? I am using c# with asp.net.

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C Sharp :: Rows Cannot Be Programmatically Added

Feb 15, 2013

I'm getting an error when I want t add a file to my dataGridView that I can't add any data because it is databound. I've been working around this but still gives me the same error. heres the snippet of the code:

       private void btnOpenLog_Click(object sender, EventArgs e)
        {
            OpenFileDialog openFileDialog1 = new OpenFileDialog();
            if (openFileDialog1.ShowDialog() != DialogResult.Cancel)
            {
                String sLine = "";
   
[Code] ....

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C++ :: 2D Arrays Adding Rows And Getting Averages

Apr 22, 2015

How to get my functions to work. I have to use void functions but I'm lost. I have to bring data in. An array of numbers.

8 27 33 14
81 146 305 249
412 71 226 4
144 55 97 493
133 265 788 240
380 117 88 25

The program works great until I add the computeSums or computeAvgs functions.

Code:
#include <iostream>
#include <string>
#include <iomanip>
#include <fstream>
#include <cmath>
using namespace std;
void computeSums(int fishArray[][4], int rowSum[], int colSum[]);

[Code] .....

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C++ :: How To Modify A Program So That It Accepts Columns Instead Of Rows

Feb 4, 2015

I have a N queens (actually 8 queens to be specific) program that accepts the numbers in order by row. I need to get it so it accepts the numbers in order by column. At first glance I thought it was just one space different, but it turned out not to be and how to get the one space difference in there. My current code (which I'm aware isn't doing the column accepting right) is:

Code:

#include <iostream>
using namespace std;
int main() {
int board[8];
cout << "Enter the columns containing queens, in order by column: ";
for(int i = 0; i < 8; ++i) {
cin >> board[i];

[Code]...

What the output should be:

Code:

Enter the rows containing queens, in order by column:

7
6
5
3
4
2
1
0

.......Q
......Q.
.....Q..
...Q....
....Q...
..Q.....
.Q......
Q.......

What it is:

Code:

Enter the columns containing queens, in order by column:

7
6
5
3
4
2
1
0
........Q
.......Q.
......Q..
....Q....
.....Q...
...Q.....
..Q......
.Q.......

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