C/C++ :: How To Reverse Diagonals In 2D Array

Jan 9, 2013

I have been trying this for so long. I need to make a separate function named reverseDiagonal where I have to reverse the diagonals in a 2D array.. I have tried swapping it but i don't know where to place the "cout" and print the diagonal.

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C :: Finding Diagonals Of Array?

Apr 11, 2014

Most of this program is working correctly, however when I get to the part on lines 70 to 78 to try and use the function on lines 103 to 113 to find out each diagonals value and then print each one back. But when this runs it only returns the value for [0][0] for each run through the loop and I'm not really sure why. I know its probably something simple but I'm just missing it,

Code:
1 #include<stdio.h>
2 #include<stdlib.h>
3 #include<time.h>
4 #define MAX 100
5
6 void display_menu();
7 int check_option(int);

[Code]...

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C++ :: Sum Of Diagonals Of Matrix - Program Giving Segmentation Error?

Jan 7, 2015

After entering the values of the matrix, it is giving me segmentation error. also "if possible", correct it

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

[Code]......

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C :: Store Character Array In Reverse Order Then Display Reversed Array

Jun 14, 2013

The program should store a character array in reverse order then display the reversed array. I have also included in the code that will display the actual characters into the array as it loops through. So I know the characters are being stored, but why doesn't it display the entire string when I call it?

Code:
#include<stdio.h>
int main(){
char str[50];
char rev[50];
printf("Enter Desired Text: ");
scanf ("%[^

[Code] ....

Is it just my compiler?

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C++ :: Reverse Elements Of Array

Apr 11, 2014

I am trying to write a program that reverses the elements of an array by using an function 'myreverse'. The function should reverse original array and return nothing.

In my program, the function 'myreverse' is not getting invoked and the original array is being displayed as it is.

#include <iostream>
using namespace std;
void myreverse(int arr[],int n) {
int *p=&arr[n-1];
int temp;
for(int i=0;i<n;++i)

[Code] .....

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C :: Unable To Get Reverse Array Of Characters

Mar 4, 2014

Code:

#include <stdio.h>
#include <string.h>
#include <conio.h>
#include <math.h>
void reverseAr(char ar[], int n);
int main() {
int choice;
char *abc= ar[];

[Code]...

My codes keep couldn't get the reverse array of characters.

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C++ :: Reverse Array - Unexpected Result

Jun 20, 2013

i use dev c++...i write this code to reverse an array and save the result in the same one

if n=3 i expect
a[0]=0 a[1]=1 a[2]=2 (before rev is OK but after calling rev)
a[0]=2 a[1]=1 a[2]=0 (expected result )
but i get
n=3

[code].....

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C :: Reverse Array Of Characters Using Recursive Function?

Mar 15, 2014

Eg. User input : abcde
Program Output : edcba

I keep on getting weird ASCI symbol in return, I couldn't achieve what I need, and tried debugging for days,

Code: char ar[20];
int len,n=0;
printf("enter the string to be reversed :
");

[Code].....

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C++ :: String Reverse Function - Array Declaration

Jan 23, 2014

Here's my program: - Program which inputs a string from user, reverses it and displays it.

#include <iostream>
using namespace std;
void string_reverse (char [], const int);
int main() {
const int arraysize = 10;
char string[arraysize];

[Code] ....

In the string_reverse function, I have declared temp character type array but on line 38, the

compiler is throwing 3 errors: -

error C2057: expected constant expression
error C2466: cannot allocate an array of constant size 0
error C2133: 'temp' : unknown size

I have declared a constant integer arraysize in line 35. Now I have no clue why is this happening because I think as I have declared it as a constant integer variable, this should not happen.

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C/C++ :: Array Implementation Of Stack To Reverse Columns In Matrix

Dec 1, 2014

I had the following question in my exam paper and only got 1.5 out of a possible 6 marks. This is the question:

Given the Matrix class:

class Matrix {
public:
Matrix(unsigned r, unsigned c);
Matrix(const Matrix<T>& rhs);
~Matrix();
const Matrix<T>&operator=(const Matrix<T>& rhs);
[Code] ....

Use the linkedStackType class (Array implementation of stack) and write a function reverseCols to reverse the order of columns in the matrix. Note that reverseCols is not a member function of the Matrix class therefore only the public interface of matrix can be used.

//Implementation of Stacks as Array
template<class Type>
class stackType: public stackADT<Type> {
public:
const stackType<Type>& operator=(const stackType<Type>&);

[Code] ....

What is the correct solution must be to reverse the columns of the matrix?

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C/C++ :: Reverse Order Of Bytes Unsigned Char Array?

Dec 1, 2014

I need fastest method to reverse order of bytes in my char array.

For example i have:

unsigned char buf[8];
// consider data stored in buf is 88 77 66 55 44 33 22 11
// how to reverse it to: 11 22 33 44 55 66 77 88
// currently i can do it by equal assignment , i make another buf like:
unsigned char buf_ok[8];

[Code] ....

// This does reverse the bytes as i want but its very slow , i am looking for fast method ..

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C/C++ :: Unable To Use Priority Queue Sorting In Reverse Order To Take Vector Or 2D Array

Aug 7, 2014

I'm trying to use a priority queue sorting in reverse order to take a vector or 2d array. The problem is that I want to sort by the vector/array cell value but keep the reference to the vector/array index of the value. I don't know quite howto keep them both related so when I pop. I can find the corresponding cell.

priority_queue<int, vector<int>, greater<int> > Open;

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C++ :: Using Array To Accept 10 Test Score - Print Highest / Lowest And In Reverse Order

Jan 28, 2014

Using the array to accept 10 testscore. Calculate and print the highest, lowest, fifth test score entered and all the test score entered in reverse order.

How i would get it to print the highest,and lowest and in reverse order. I'm confused as to what to do...

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C++ :: How To Reverse Bit - 1 To 0 And 0 To 1

Apr 6, 2014

How can I reverse/toggle bit like 1 to 0 and conversely, 0 to 1?

For instance: 01000100 ('D' 68) to 10111011 ('╗' 187).

Is there any way easier and more simple than:

1. Convert char/string to binary.
2. Toggle bits.
3. Convert binary back to char/string.

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C++ :: Reverse Of A String

Dec 22, 2013

If I am executing following code after reversing it is giving "1" but I need "0001".

#include <stdio.h>
int main() {
int n=1000, reverse = 0;
while (n != 0) {
reverse = reverse * 10;

[Code] .....

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C++ :: How To Reverse A List

Apr 10, 2013

I would like to add a new function to my class, "reverse" that would reverse the order of the list. I have added a prototype in the "public:" section of the code (see the comment with PROTOTYPE in it). Your task is to complete the implementation (see the comment with IMPLEMENTATION in it. See the main() function to see how the results should look

#include
#include
using namespace std;
class List {
public:
// Constructs an empty list
List();

[Code]....

I cant seem to get the right function to put into reverse I have tried everything Im not sure where to start!

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C/C++ :: Reverse Of A Number?

Mar 28, 2014

I have written a code to find reverse of a number and print if if the original and reversed numbers are equal or not .the problem is in the if condition where the first printf is not working at all. the code is

#include <stdio.h>
#include <conio.h>
int main (void)
{

[Code]....

as if i enter 121 it still shows the 2nd printf instead of 1st one. sort out the bug;;!

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C++ :: Reverse A String In Place

Jan 12, 2014

I was browsing the web looking for simple yet fun programming challenges and crossed this one. I figured out how to reverse the string in place but I want it to read "blue is house the". I approached it in two ways for the heck of it. My idea was the second one, the first one I googled. I didn't know a simple rbegin() could do that, pretty neat.

I found the question here.[URL] ....

Code:
#include <iostream>
#include <string>
int main(int argc, const char * argv[])
{
std::string phrase = "The house is blue.";

[Code] ......

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C++ :: Why Are Destructors Called In Reverse

May 15, 2013

"Destructors for a derived class object are called in the reverse order of the constructors for the object. This is a general rule that always applies. Constructors are invoked starting with the base class constructor and then the derived class constructor, whereas the destructor for the derived class is called first when an object is destroyed, followed by the base class destructor."

But why, or is it just because, so programmers know which one and modify their destructor accordingly??

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C++ :: Reverse Words In A Sentence

May 21, 2014

I am trying to write a program in which i enter sentences and then gives the reversed output

E.g.: -

INPUT
Enter the number of sentences
3

This is a sentence
Program
You are great

OUTPUT

sentence a is This
Program
great are You

I wrote the following code but its failing when im trying to enter a sentence

#include <iostream>
#include <conio.h>
#include <string>
using namespace std;
void str(char*, int);
void main() {
char *word[25];

[Code] ....

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C++ :: Printing Name In Reverse Using Pointers

Jan 25, 2015

There is alien code.

#include <iostream.h>
#include <conio.h>
#include <math.h>
#include <stdio.h>

using namespace std;
char printReverse(char*);

[Code] ....

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C++ :: How To Reverse Bits For A Number

Sep 3, 2013

I am working on a project where I need to reverse bits for a number.

For example, if I have 110111100000000 I need to reverse it to 0000000001111011.

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C/C++ :: Reverse String Using Stacks?

Oct 29, 2014

As part of my hw assignment i need to reverse a string using stacks. This is my attempt and so far its not working.

// reverse.cpp : Defines the entry point for the console application.
//
#include "stdafx.h"

[Code].....

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C++ :: How To Reverse A Text File

Dec 26, 2013

If we have a text file containing the string: abc, how to reverse it to be cba using file open modes (ios::app, ios::ate, ios::binary, ios::trunc, ios::in and ios::out)?

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C# :: Reverse Chars Of String

Aug 7, 2014

I have a problem with my code. I just have to reverse the chars of a string, but it adds a /n that I can't delete.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace Ch05Ex05._5 {

[Code] ....

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C/C++ :: Program To Reverse Sentence

May 31, 2014

I have to write a program to reverse a sentence like

cat
tac

But my program is case sensitive. Like if i enter sentence it gives me ecntenes(which is wrong). How to make it non case-sensitive using vectors?

// BackWardsSentence.cpp : Defines the entry point for the console application. //

#include "stdafx.h"
#include <iostream>
#include <sstream>
#include <string>
using namespace std;
string BackWords (string sentence);

[Code] ......

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