C++ :: Two Dimensional Array - Multiply Mxn Matrix Of Integers By Nxr

Jan 8, 2015

Using two-dimensional arrays, write a program which multiplies an mxn matrix of integers by an nxr

matrix of integers.

INPUT FIRST (2x2) MATRIX:

Type in 2 values for row 1 separated by spaces: 3 4

Type in 2 values for row 2 separated by spaces: 5 7

INPUT SECOND (2x2) MATRIX:

Type in 2 values for row 1 separated by spaces: 1 1

Type in 2 values for row 2 separated by spaces: 2 2

3 4

5 7

TIMES

1 1

2 2

EQUALS

11 11

19 19

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C++ :: Display 3rd Element Of Two Dimensional Array Of Integers

Feb 13, 2015

display the 3rd element of a two dimensional array of integers named T of size 2x5?? i don't know how to start because i'm just advance studying with array

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C++ :: Display Maximum Value In Two Dimensional Array Of Integers

Feb 3, 2014

How will you code a program that displays the maximum value in a two dimensional array of integers. the program will ask the user to input the 4x5 array?

i know how to code it. but i dont know what to do to find the maximum value. :( how to find the maximum?

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C++ :: Increasing Integers Automatically Within Two Dimensional Array

Nov 15, 2013

I am new to programming all together but i have been writing a program in c++ and im coming up against an issue with my array.

#include<iostream>
#include<iomanip>
#include<string>
using namespace
int main () {
int a ;
int b ;
char answer ('Y') ;

[Code] ....

I am trying to get the program to increase say year one by 1 when the condition is met i have tried

if ( a >= 70 && a <= 100 && b == 1)
{grade [0][0] = 0 + 1;}

and

for (grade[0][0] = 0 ; a >= 70 && a <= 100 && b == 1 ; grade [0][0]++)
{grade [0][0]= 0 + 1 ;}

Now all that i want is that the array will take the information from int a and int b and then add 1 to the appropriate part of the array . I have tried putting it in deferent places but its not working for ether. the program will run but it will not add to the array.

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C :: Entering Two Positive Integers To Multiply Together - Program Won't Compile

Aug 24, 2013

I'm trying to get my C program to compile but it's not working at all. I've programmed a little in C++ before but I'm not used to C. Here's my program so far:

Code:
int main(void){
// Establishes variables
int num1, num2, product;
float quotient;

[Code] .....

It keeps giving me an error message as follows:

"/usr/bin/ldrelabwk2: file format not recognized; treating as linker script
/usr/bin/ldrelabwk2:1: syntax error
collect2: ld returned 1 exit status"

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C++ :: Program That Add / Subtract / Multiply Or Divide Two Integers - Incorrect Answers

Oct 7, 2012

Create a program that adds, subtracts, multiplies, or divides two integers. The program will need to get a letter (A for addition, S for subtractions, M for multiplication, or D for division) and two integers from the user. If the user enters an invalid letter, the program should display an appropriate error message before the program ends. If the letter is A (or a), the program should calculate and display the sum of both integers. If the letter is S (or s), the program should display the difference between both integers. When calculating the difference, always subtract the smaller number from the larger one. If the letter is M (or m), the program should display the product of both integers. If the letter is D (or d), the program should divide both integers, always dividing the larger number by the smaller one."

And here is the test data. I am posting the results from my desk-check table.

operation first integer second integer answer
A 10 20 30
a 45 15 60
S 65 50 15
s 7 13 6
G -1
M 10 20 200
d 45 15 3
d 50 100 2

Then, I transferred my program into a source file. Here it is:

//Exercise16.cpp - display answer of two integers

#include <iostream>
using namespace std;
int main() {
//declare variables
int firstInteger = 0;

[Code] ....

After putting in the data, everything worked fine, except the last two operations, which are M (multiplication) and D (division). All the answers for the last two operations essentially give me a 0.

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C :: Number Of Utility Functions For Two Dimensional Arrays Of Integers Or Matrices

Nov 7, 2014

I am working on a number of utility functions for two dimensional arrays of integers, or matrices. However I am having a problem with segmentation faults, most likely due to errors in using malloc in functions like copyMatrix.

Code:
matrix_utils.h~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//This function checks if two matrices are equal
int isEqual(int **A, int **B, int n);

//This function returns one row of a matrix
int * getRow(int **A, int i, int n);

//This function returns one column of a matrix
int * getCol(int **A, int j, int n);

[Code] ....

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C++ :: Concatenate Two 2-dimensional Int Arrays Into One Larger 3-dimensional Array

Jul 31, 2013

How can I concatenate two 2-dimensional int arrays into one larger 3-dimensional array. This question is also valid for the 3-dimensional vectors. I know the command for the one dimensional vector as:

std::vector<int> results;
results.reserve(arr1.size() + arr2.size());
results.insert(results.end(), arr1.begin(), arr1.end());
results.insert(results.end(), arr2.begin(), arr2.end());

and for the one dimensional array as:

int * result = new int[size1 + size2];
copy(arr1, arr1 + size1, result);
copy(arr2, arr2 + size2, result + size1);

But I do not know how to make a 3-dimensional array or vector.

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C :: Declare Two 1-dimensional Parallel Arrays Of Integers That Will Hold The Information Of Up To 10 People

Jul 30, 2014

In pseudocode and in C code, declare two 1-dimensional parallel arrays of Integers to store the age and weight of a group of people that will hold the information of up to 10 people. Use a For loop to iterate through the array and input the values. This is the code i have, but my array is showing up as 11 and not 10?

Code:
#include <stdio.h>
int main() {
//Define Variables
float Age_Data[10],Weight_Data[10];
float Age_Input,Weight_Input;

[Code] .....

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C :: Function Capable To Invert Matrix Of Integers

Jun 4, 2014

I am looking for function capable of converting square matrix of integers.Where to find such function? I know the algorythm but have no time to implemnt it.

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C :: Multiply One Array By Another

Dec 1, 2014

I am trying to multiply one array by another, for example:

enter 5 letters
enter 5 numbers,2 3 4 2
output= qq, www, tttt, ee

but im stuck with the last calculation.

Code:

#include <stdio.h>
#include <stdlib.h>
int main() {
char array1 [5];
int i, j;
int array2[5];

[code]....

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C++ :: Multiply Values In Array

Jan 27, 2015

If we have array like

int numbers [] = {3,4,8,9,6,3,2,58,6,3,2,5};

how can we fast do smth like 3*4*8*9*6*3*2*58*6*3*2*5

also numbers[0]*numbers[1]*numbers[2] etc

all must be in one loop....

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C++ :: Converting One-dimensional To Two-dimensional Array

Jan 17, 2014

I had a hard question in my C++ final exam and I'm trying to solve it for the last 3 days. I haven't succeded yet! Here is the question: You have a one-dimensional array A[20]={1,2,3,4,...,20} and B[5][4] you have to assign the A array's elements to the B array but there is an order which is: B[5][4] = { { 12, 9, 11, 10 }, { 14, 7, 13, 8 }, { 16, 5, 15, 6 }, { 18, 3, 17, 4 }, { 20, 1, 19, 2 } } and there is a restriction: you can only use ONE for statement, nothing else!

#include <iostream>
#include <iomanip>
using namespace std;
int main(){
int A[20] = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
16, 17, 18, 19, 20 }; // define A array's elements.
int B[5][4] = { 0 }, k = 1; // define B array and k counter.

[code]....

I can't narrow the statements to one,This program works perfectly but it shouldn't be that long, we need ONLY ONE FOR statement, not two!

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C :: Assigning One Dimensional Array To Two Dimensional Array

Mar 19, 2014

is it allowed to to like this:

char a[10] = "Lizard";
char b[2][5];
b[0][0] = a[0];
b[0][1] = a[1]; etc?

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C :: How To Copy 3 Dimensional Array Into 2 Dimensional Array

Sep 2, 2013

I have a 3D array that contains 200 strings. I'm trying to copy all these strings into a 2D array. How can this be done? This is what I have so far but it isn't working correctly.

Code:
for(int i = 0; i < row; i++) {
for (int j = 0; j < col; j++)
{
dest[i][j] = source[0][i][j];
} }

The finished product would be with 100 rows, 2 columns.

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C :: Converting One Dimensional Array To Two Dimensional Array

Aug 30, 2013

convert an one dimensional array into a two dimensional array and print like a matrix.

input: 34 50 2 4 90 33 7 80 9
output: A is a 3x3 matrix
34 50 2
4 90 33
7 80 9

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C++ :: Accept Integer Array And Its Size As Arguments And Assign Elements Into 2 Dimensional Array

Jan 10, 2015

Write a program using user-defined function which accepts an integer array and its size as arguments and assign the elements into a two dimensional array of integers in the following format: If the array is 1,2,3,4,5,6, the resultant 2D array is

1 2 3 4 5 6
1 2 3 4 5 0
1 2 3 4 0 0
1 2 3 0 0 0
1 2 0 0 0 0
1 0 0 0 0 0

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C :: 2 Dimensional Array Max And Min

Apr 20, 2013

I was able to get the max to work but I cant get the min. it returnning something like -125863456.

Code:
int maxx(int a[][10]);
int minn(int a[][10]);
int main(void){
int array[][10] = { { 2, 7, 6, 8, 4}, {3, 9, 1, 5, 6} };
int max1, min1;

[Code] .....

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C++ :: 3 Dimensional Array Printing?

Oct 25, 2013

I want to make a program that asks the user for a message and then print out a large graphic of that message. For example, if the user types "he" I want to print out

H..................H EEEEEEEEE
H..................H E
H..................H E
H..................H E
HHHHHHHHHH EEEEEEEEE
H..................H E
H..................H E
H..................H E
H..................H EEEEEEEEE

(treat the periods as spaces. I only put them there because it wouldn't separate the H's correctly.)

I will loop this to continue until the user types quit.

1. How would I set this up to store the user input characters into an array?

2. How would I print out the stored data in the shape of the word?

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C :: How To Create 8 Dimensional Array

Dec 19, 2014

Is it possible to create an 8 dimensional array in C? If no, then what can I do to improvise or let say bypass the limit?

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C++ ::  Deleting Two Dimensional Array

Oct 21, 2014

Consider the following code snippet:

GLfloat box[4][4] = {
{ x2, -y2, 0, 0 },
{ x2 + w, -y2, 1, 0 },
{ x2, -y2 - h, 0, 1 },
{ x2 + w, -y2 - h, 1, 1 },
};

Do I need to call a variant of

delete [] box;

Against this float array?

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C++ :: Two Dimensional Array With Pointer?

Apr 1, 2013

int sum(int (*ar2)[4], int size);

// I dont know what the ar2 is going on

int main(){
int data[3][4] = {{1,2,3,4},{5,6,7,8},{9,10,11,12}};
int total = sum(data, 3)
return 0;
}

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C# :: Sorting 2 Dimensional Array By Value

Jan 9, 2014

Here is what I have, I have a 1D Array being added to a 2D Array and I need to Sort them by value value 3 in the 2D Array, while maintaining a specific amount. Here is what I have so far:

public static void CheckHS(string[] HS) {
try {
GeneralData.HighScores[10, 0] = "11";
GeneralData.HighScores[10, 1] = HS[1];
GeneralData.HighScores[10, 2] = HS[2];
GeneralData.HighScores[10, 3] = HS[3];
//Need Sort Data - Bubble Sort?
}//end Try
catch (Exception ex) { MessageBox.Show(ex.Message); }
}

I am thinking bubble sorting but I remember reading about something faster. Unfortunately I can't find it on the web. The idea is that there will be always 10 Values and 4 Columns on the 2D Array. [The 11th Row being empty at the end of it.

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C/C++ :: How To Create 4 Dimensional Array

Apr 24, 2013

I want to create 4 dimensional array, in that first three dimenstional are fixed size and the final index will be on 0 to N-numbers.

E.g., double array[500][25][10][<NOT FIXED>].. So I cant create statically, because the index size are more. Also I have tried 4 dimenstional vector, but its giving 2 problem.

(i) I am storing 4th dimenstion size is more than vector[0][0][0].max_size()
(ii) Storing and Retrieving its more time in vector

So, any other solution to store large array which is 3 index is FIXED and final one is not FIXED?

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C++ :: Sparse 2 Dimensional Array?

Feb 26, 2012

i created a program which uses Sparse 2 dimensional array, but i am not sure if i did it in the right way .

this is the instruction i have:

Create a constructor and a destructor. The constructor should take as input the size of the array (consider only square NxN arrays, so only one dimension is needed) and the thickness of the ribbon. To make this precise, if supplied with a thickness parameter t, you may assume that the element [0,t] (i.e. the (t+1)-th element of the first row) is where the useless area begins on the right. Similarly, the element [t,0] is where the useless area begins on the left. The border of the useless areas moves diagonally down and to the right, i.e. it consists of [1,t+1],[2,t+2],... and [t+1,1],[t+2,2],... The above example has thickness 3.

The space for the 2-d array should be dynamically allocated and must be large enough to fit the useful data only.Create methods for random read and write access to the array as in the case of 1-d arrays.Overload the [] and << operators, as in the case of 1-d arrays. Think carefully about what the [] operator should return and how it should work. Ideally we would like this to behave in a manner similar to standard 2-d arrays (i.e. accessing elements in the normal way, like x[5][6]).

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C++ :: Assigning Elements Of 1-D Integer Array Into 2-D Array Of Integers

Sep 27, 2013

I am having problem in writing the code for the problem "To assign the elements of 1-D integer array into 2-D array of integers such as if the array is 1,2,3,4,5,6 The resultant 2-D array should be like :

1 0 0 0 0 0
1 2 0 0 0 0
1 2 3 0 0 0
1 2 3 4 0 0
1 2 3 4 5 0
1 2 3 4 5 6
"

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