C/C++ :: How To Input A Recursion Method

Feb 7, 2015

I am trying to input a recursion method. The code compiles, however, it is only giving me a value of 1. I am wanting the value of 5 when it is compiled. Why is this?

#include <iostream>
using namespace std;
int number(int x) {
if (x == 1)

[Code] ....

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C++ :: Undefined Reference To (method Name) When Accessing Method In Static Library

Jan 17, 2013

I've been trying for more than one month to access a method found in a library called libcocosnas_static.a. I'm using Cocos2d-X version 2.0.4. The library has been used many times by my company to make games using cocos2d-1.0.1-x-0.12.0 without any problem.

This is what I've done:
1- I added the include paths of the library to both eclipse and Android.mk
2- Included the .h file using #include "NASPlatformUtil.h"
3- Added the libcocosnas_static.a file to the proj.androidobjlocalarmeabi folder
4- Added "LOCAL_WHOLE_STATIC_LIBRARIES += cocosnas_static" to the Android.mk file
5- Called the function using: NASPlatformUtil:: openUrl("http://xxx.xxx.com/");

I can right click on the function, click Open Declaration and get it without any problem, but the compiler keeps on giving me that dreaded error...

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C++ :: Pass Method Of Derived Class As Parameter To Another Method In Base Class?

Feb 2, 2015

I have a question similar to the one here: [URL] .....

The main difference is I would like to pass a method of derived class as a parameter to some other method in its template base class.

template <typename BaseType>
class Base {
public:
typedef void (Base::*Callback)(int A);

[Code] .....

The above is an example which does not compile. My compiler complains that the two BaseMethod() calls in DerivedMethod() are invalid uses of non-static member function.

Is this not possible to do, or is my syntax simply wrong? All I want is to be able to pass as an an argument to a method in the base class from the derived class some callback as a variable for the base class to invoke later.

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C# :: Algorithm With Recursion Use

May 12, 2014

To construct and write down algorithm of determination of the sum of squares of consecutive integers with recursion use. I tried to do something:

public static int RecSumSquare(int x, int n)
{
if (n < 0) throw new ArgumentException("n should be greater than zero");
if (n == 0) return 0;
else return x*x+RecSumSquare(x, n - 1);
}

But I don't know as the beginning and the end of this algorithm will look.

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C/C++ :: How To Decipher Recursion

May 4, 2014

Suppose I'm given the following code:

int mystery(int n){

int something;
if(n > 0)

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C++ :: Return A Node Using Recursion

Mar 27, 2013

So the task is to find the node with minimum value of a binary tree (not binary search tree). the input is the pointer to the root of the tree. and i cannot make recursion work when i do if conditions. here is what i have Code: ​/*function 3-takses as input the pointer to the root of the tree and returns a pointer to the node with the minimum value*/

CPPtr minimumvalue(CPPtr SP){
CPPtr min = NULL; //node of minimum value
if(SP== NULL){ // if there is a node, begin comparing
return NULL;
}
else{
if(SP->data<SP->left->data){ //if the node has smaller value than its left child
min = SP; //update node of minimum value

[code].....

no matter where i call my function i get errors like unhandled exception at some memory. how to use recursion in this?

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C :: Use Recursion To Permutate Scores

Feb 8, 2013

I have this problem set that has to use recursion to permutate scores. I have read in all the numbers and have tested that it works . l have also attached what I have so far. Here is what I think I need to do:I have to pass the structs into this permutation algorithm that is here:

Code:
#include <stdio.h>
void ListPermutations(char str[]);
void RecursivePermute(char str[], int k);
void ExchangeCharacters(char str[], int i, int j);

[Code]....

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C++ :: File Recursion Limitation?

Apr 28, 2013

It seems that boost's file recursion requires that the file using the recursion must be in the include path. This makes using file recursion in a library header a problem as libraries may be located in a subdirectory of an include path (which is minor since the programmer can state the subdirectory in the recursive file call as long as it is not relative to the calling file). I also found it a problem when the main compile directory isn't in the compile path.

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C++ :: Want To Return A Node Using Recursion

Mar 28, 2013

So the task is to find the node with minimum value of a binary tree (not binary search tree). the input is the pointer to the root of the tree. and i cannot make recursion work when i do if conditions. here is what i have

CPPtr minimumvalue(CPPtr SP){
CPPtr min = NULL;//node of minimum value

if(SP== NULL){// if there is a node, begin comparing
return NULL;

[Code] ....

No matter where i call my function i get errors like unhandled exception at some memory. How to use recursion in this?

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C++ :: Recursion To Loop Using Stack

Oct 15, 2014

I want to convert the following program into a non-recursive code using a stack and a loop:

void write(int n) {
if (n>0) {
write(n-1);
cout << n << " ";
write(n-1);
}
}

And here is the code I am using but that currently does not work, and I do not know why:

stack<int> S;
S.push(n);
while (not S.empty()) {
int k = S.top();

[Code] .....

How to simulate that recursion. I thought it was enough to push into the stack the equivalent recursive call.

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C++ :: Reverser Function Using Recursion?

May 8, 2014

So i have a program it works which takes in a word reverses it prints it out. BUT! the problem is that the program is without recursion. convert the function into recursion.

#include <iostream>
#include <iomanip>
#include <fstream>
#include <string>

[Code].....

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C/C++ :: Recursion With Printing Strings?

Oct 20, 2014

I am trying to print an outline. My code works up to a depth of 3. (The depth is the number of subsections - so 3 would be section 1, section 1.A, and section 1.A.1). It also works for a width (number of sections and each type of subsection) of 26, where it is capped. However, to get a larger depth, it would involve many more loops. Not only is that terrible code, it also freezes up the terminal I'm working on. I believe recursion would make it much nicer, but I'm struggling to grasp the idea when using a string (I understand when it is a number).

#include <stdio.h>
int sec(int width, int snum) {
char section[100];
sprintf(section, "Section ");

[Code].....

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C/C++ :: Factorial Program With Recursion

Nov 9, 2014

I put some checks in factorial program, I am confused how 27, 40 50 is coming in output and ans is 10.

#include<stdio.h>
int fact(int n) {
if(n==1) {
printf("hello1 %d
",n);
return 1;

[code].....

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C++ :: Recursion With Linked List

Aug 28, 2013

I have a linked list I made and am practicing a simple recursion function sum() which returns the sum of all numbers in each node of the list. Here is my sum() function:

int sum(ListNode *ptr){
if (ptr->next)
return (ptr->num + sum(ptr->next));
else
return(0);
}

where the initial arg passed through the ListNode * parameter is my head node (with null value). The output is fine until that point, then the program locks up and I get the "...has stopped working" error.

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C/C++ :: Recursion Using Linked List

Apr 28, 2014

I have been asked to write three functions for a Liked List that can add remove and reverse the elements of the Linked List. Now, I have done the add function and It is displaying the elements properly using recursion function. But My removal function is not working and I tried all the possible logic I can think of, I dont know, where did I make mistakes.

This is My class for the Linked List

#ifndef __Linked_Lists_Recursive_function_Implementation___NumberList__
#define __Linked_Lists_Recursive_function_Implementation___NumberList__
#include <iostream>
using namespace std;

[Code]....

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C++ :: Recursion - How To Print To The Screen Value Of N After It Has Been Multiplied

Mar 20, 2013

How to print to the screen the value of n after it has been multiplied.

For example: if I use cout << "n: " << n << " power: " << power << "
"; I

can see the variable "power" decrementing by 1, but I don't see the variable "n" incrementing with its new value after it has been multiplied by n * n.

#include <iostream>
using namespace std;
typedef unsigned short int USHORT;
typedef unsigned long int ULONG;

ULONG Getpower(USHORT n, USHORT power);

[Code] .....

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C++ :: Converting Decimal To Binary Using Recursion

Feb 25, 2013

I'm trying to write a program that converts a decimal number to a binary one. I have most of the program written, but I am having a little bit of trouble. Whenever I enter a decimal number, the program will convert it correctly to binary, however, the last number is not included in the conversion. EX: Converting 37 into binary (0100101) yields 010010 when entered into the program. BTW the program must utilize recursion to achieve this goal.

#include <iostream>
using namespace std;
void decToBinary(int num1);
int main() {
int num1;

[code]....

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C++ :: Sorting Array Of N Given Elements Using Recursion?

Dec 29, 2013

I need to sort an array of n given elements using recursion. What am i doing wrong here?

#include <iostream>
using namespace std;
int i=0, j=1, v[100], n;

[Code].....

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C++ :: How Do Function Count Factorials - Recursion

Apr 3, 2013

How do function count factorials in this program?

#include<iostream>
#include<conio.h>
using namespace std;
void main(){
unsigned int factorial(unsigned int value);

[Code] .....

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C++ :: Drawing A Rectangle And Diamond Using Recursion?

Oct 23, 2013

write a code that draw a block and diamond each in a single run by using '*' in recursion.

Below are one 10X10 rectangle and 6X4 diamond.

**********
**********
**********
**********
**********
**********
**********
**********
**********
**********

**
* *
* *
* *
* *
* *
* *
* *
**

Note: I couldn't write the diamond here appropriately somehow.

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C++ :: Merging 2 Linked Lists Into Third One Via Recursion

Apr 17, 2012

I am having to write a program that takes 2 sorted linked lists (x and y) and merge those to sorted into a third one (z). This has to be done via recursion. I think I am close but there is a logic error.

Code:
void SortedMergeRecur(Node*& xHead,Node*& yHead,Node*& zHead)
{Node* temp = 0;
if(xHead == 0) {
zHead = yHead;
yHead = 0;
}

[Code]...

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C++ :: Function Causing Infinite Recursion Crash

Oct 24, 2014

This function is apparently causing infinite recursion, but I have no clue what's causing it:

Code:
int pow( int base, int exp ) { int somevariable = pow(base,exp-1);
if (exp == 0) {
return 1;
}
else {
return base * pow(base,exp-1);
}
}

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C :: Reversal Of Doubly Linked List Using Recursion

Mar 6, 2015

I am trying to reverse a Linked list using recursion but whenever I try to print it after reversal it prints only the last element of the list.

Code:
void reverseRecursive(Node **root, Node *temp)
{
Node *next = temp->next;
if(temp->next == NULL)
{
*root = temp;

[Code]...

I have just posted the reverse function to enable easy readability rather than post the entire code

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C :: Recursion For Finding Distance Between Root And Leaf?

Jun 19, 2013

I wrote the following recursion for finding the distance between a root and a leaf, but am not quite sure how to make it work.

Code:
int calc_depth(Node* tree, Node* zero) {
if (!tree)
return 0;
if (zero->right || zero->left == tree)
return 1;
return (zero->right ? calc_depth(tree, zero->right) : calc_depth(tree, zero->left));
}

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C :: Print Triangle Pattern Using One Loop And Recursion?

Dec 18, 2013

Q.print triangle pattern using one loop and recursion

eg: 5

Code:

#include <stdio.h>#include <conio.h>
void pattern(int n,int N) {
int i,c=1;

[Code]....

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C :: Program For Counting Vowels In A String Using Recursion

Jul 31, 2014

program for counting vowels in a string using recursion ?

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