C++

Forum

Beginners - August 2018 (Page 9)

how can i access each permutation of an array individually found by heap algo? i.e.,permutations of heap algo for {1,2,3} generate 1 2 3 2 1 3 3 1 2 1 3 2...

[2 replies] Last: I'm not sure that's what was asked. A "heap" is just an array that is... (by Duthomhas)

by okfree

Constructing an array

If I have an existing array a, and an integer k, how do I create an array such that the i-k to i+k th positions must have exactly a elements smaller than a ...

[5 replies] Last: I'm a little confused by what your asking... If by i you mean the inde... (by Karakuik)

by darkob93

Modulo recursive problem for exponents with decimals

EDIT: cleaned out some of the stuff from int main() to make it more readable. Hi, I have an exercise problem where I'm supposed to calculate N!modM where N! is...

[6 replies] Last: Yes, you are right I was overcomplicating, should have thought up of t... (by darkob93)

by closed account 1vf9z8AR

.exe has stopped working

This is my code but when i compile it on codeblocks it says .exe has stopped working after taking input. #include<iostream> using namespace std; int d...

[3 replies] Last: These ones: while(i<t) { length=digits(n,i); in... (by Repeater)

by Ch1156

Ternary operator help

I'm looking at the ternary operator and I never used it before but would liek to know how it works, I've been looking at documentation for it but it doesnt say ...

[8 replies] Last: Great! thank you for all your help! (by Ch1156)

by ChrisL

Some basic reasons to start

Write your question here. I have started on a question that allowed me to compile but when I went to run it using cygwin or netbeans the program ran and ran wi...

[4 replies] Last: You could get 99 (or any number) if you forgot to initialize count to ... (by tpb)

by r6racer

Spell checker (Programming 3)

"Write a spell checker class that stores a set of words, W, in a hash table and implements a function, spellCheck(s), which performs a Spell Check on the string...

[3 replies] Last: std::unordered_map is a hash table. http://www.cplusplus.com/reference... (by tpb)

by newbie4long

Program hangs

I'm having a hard time figuring out why my program just hangs after I enter my skeleton and human. #include "stdafx.h" #include <iostream> #include <random>...

[4 replies] Last: That one feels backwards to pretty much everyone at first. But when yo... (by tpb)

by passiontrip

Adding values in a list with an iterator

I'm looking to take the list and instead of going from 0-90 by 10 I would like it to go from 0-90 counting by 5's. However I messed up in my fives_list fun...

[2 replies] Last: Oh wow that was an easy fix thank you very much! (by passiontrip)

by closed account E0p9LyTq

coordinate compression

Can anyone give me some hint as how to solve this problem: Write some code, post it here. This is not a homework site, nor one to cheat at codechef challenge...

[7 replies] Last: can someone just explain me the test cases.. I am sort of getting the... (by darkX)

by kreezy

My First Project

Hello everyone :D I recently made my first C++ project (console app), and I want any feedback you guys want to give me when it comes to the code I produced :...

[6 replies] Last: Thanks a lot from everyone who responded. This project was made withou... (by kreezy)

by hacker9876

GCD (1,2)

How can we calculate gcd of a^n+b^n and a-b when a,b,n<=10^9 My logic is that gcd(a^n+b^n,a-b)=gcd(a+b,a-b) for every test case this is working...because form...

[22 replies] Last: Just an observation, but... If (a-b) = 0 then GCD = 2a^n. If (a-b)... (by Manga)

by alcatraz98

GCD

Write your question here. Whats problem in my code #include<iostream> #include<vector> #include<math.h> #include<algorithm> using namespace std; ...

[5 replies] Last: @Manga, In gcc <iostream> indirectly includes <string>: <iostream> ... (by tpb)

by clonxy

How do you delete 2d vectors?

I tried deleting a 2d vector by using .clear(), but when I tried reloading the Game object, it prints out really weirdly. Game::Game(const std::string &filena...

[1 reply] : If map2d is a vector of vectors, then map2d.clear(); map2d.res... (by Repeater)

by mycuser

std::bad_array_new_length

Write your question here. what() is wrong whith this code ? from a famous book I'm reading Put the code you need help with here. class vect { in...

[4 replies] Last: [Hello all, I have reworked Andy's line # 12 from : for (int i = 0;... (by mycuser)

by asdru

->size() returns the wrong result

I'm using the ->size() operator to compute the number of elements in an array of strings, but the result is clearly wrong (returns 1 for a 2-element array). Ho...

[4 replies] Last: All of these syntaxes call the size() member function of first std:... (by keskiverto)

by soujanyanaganuri

Decryption of openssl packets with static certificates

I am working on an ethical hacking https://goo.gl/mFYtki project to monitor all the encrypted packets through OpenSSL. I do have both the public and private key...

[no replies]

by Seyter

HOW TO MAKE A PROGRAM THAT ACCEPTS POSITIVE NUMBER INPUT BUT NOT NEGATIVE NUMBERS OR ALPHABETS?

HOW TO MAKE A PROGRAM THAT ACCEPTS POSITIVE NUMBER INPUT BUT NOT NEGATIVE NUMBERS OR ALPHABET AND INCLUDES LOOP UNTIL WRONG INPUT IS TRUE?

[8 replies] Last: Also, the usual idea is to write pseudo code first, then turn that int... (by TheIdeasMan)

by CGunn86

Default Constructor question.

Let's say I have a parametized constructor, and it's the ONLY constructor that should be used, should I =delete the default constuctor or still use =default? ...

[4 replies] Last: Nope not misleading. I appreciate you clarifying for me. I sort of fig... (by CGunn86)

by Kai456

Exception thrown when trying to print only first n elements of vector

I can't seem to figure this out. I basically want to first prompt the user how many elements they want, then allow them to input numbers like so: 5 1 2 3 4 5 ...

[6 replies] Last: Wow Ganado thank you for the great reply! Makes a lot more sense now t... (by Kai456)

August 2018 Pages: 1... 7 8910 11... 15

Archived months: [jul2018] [sep2018]

This is an archived page. To post a new message, go to the current page.