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Beginners - July 2019 (Page 5)

Hi, I'm not understanding why my dynamic array won't compile. int square = 1; int k; for (int i = length; i < length*length; i++){ for...

[4 replies] Last: >> dutch I got it! char** a = new char* ; for(int i = 0; i... (by jjordan33)

by joeboat

Swapping number question help

So my question asks me the following: Declare and define a function that swaps two integer numbers: void swap(int &n1, int &n2) Declare and define an overloa...

[5 replies] Last: No, you can't have several variables with the same name. double n1 wo... (by zapshe)

by CakeByTheOcean

How to have a unique pointer with 32 byte aligned?

I want to change my current version to a new version using make_unique function. Reason: I found make_unique much better than std::unique_ptr's constructor. Al...

[3 replies] Last: We thought make_unique could do the work (?) Can it? Mostly. When I... (by mbozzi)

by SparkXV

Need Approach with better time complexity? (1,2)

Given 2 sorted arrays A and B, if we have to select A and B such that i <= j, find the Kth minimum value of (A + B ). Can anybody tell the approach better t...

[30 replies] Last: my approach in, I think, O(n lg^3 n) (pseudocode) array a, b sorted_s... (by ne555)

by sarah1993

Choosing random numbers

Hi all, I'm new here, also new to C++. I would like to ask. I got a task to choose two random numbers for each row. After done some revision, I had successfully...

[4 replies] Last: I would like to ask.. if i do rand()%4+3, it will select random number... (by jonnin)

by chinashieh

Need help for finding the solution and the code of exercise from the book c++ by dissection

hello,c++ guys, I find a book from my shelf that called c++ by dissection written by Ira Pohl, ISBN:0-201-74396-5, for learning well, I just want to follow the ...

[2 replies] Last: FWIW, the book is available here: https://doc.lagout.org/programmation... (by dhayden)

by kmce

Question from bjarne stroustrup programming principles and practice

Hi, I have been trying to figure out a question from the programming principles book since yesterday and I can not figure out the solution. The question is ...

[4 replies] Last: But I decided to try again, and not have the computer know the number... (by zapshe)

by PhysicsIsFun

Code simply stops randomly?

Hello guys, I am experiencing strange code behavior. So in the institute of my university, we have a "cluster", i.e. thousands of CPU's that we can use to ru...

[17 replies] Last: And keeping a close eye on the weather forecast :P (by MikeyBoy)

by XboxOne2019

Writing 3 types of variables to a 1-D array

Hey guys. We have a homework assignment where we have to create a 1-D array to hold the units of food for 7 monkeys. All the data in the file is in the format o...

[12 replies] Last: I had to initialize my array to 0 to get it to work. Not sure why. ... (by MikeyBoy)

by jjordan33

Filling a new array of ints with part of a different array

Hi, I have an array with x values and 0 values. How can I fill a new array with just the x values? e.g. num[1, 0, 4, 0, 0, 5]; newNums[1, 4, 5]; for (int...

[11 replies] Last: Okay, so it chips away at the string from the beginning by removing le... (by jjordan33)

by Usiminas

Access SQL Server witch c++.net

Hello, I'm new to programming with c ++. Net. I use lots of C #. I started in new job has an application developed in c ++. Net(VS2008) that read some informa...

[3 replies] Last: Hello!! I'm create a program: #include "stdafx.h" #include "SQL_C++... (by Usiminas)

by jsmithplus

Calling srand each time before generating random numbers make it more or less random?

I need to generate random numbers many times (retrieving elements from different arrays) and it seems the following code produce results that follow a pattern: ...

[12 replies] Last: It generates the seed (and initialises the random engine) only once; t... (by JLBorges)

by jjordan33

Possible to dynamically separate input?

Hi, Is there a way to dynamically separate string input into different variables? For instance, if I have //pseudo of course string nums = ""; string letts...

[3 replies] Last: #include <iostream> #include <cctype> #include <string> #include <alg... (by lastchance)

by Gladys994

order of execution in an expression with commas in C++

It is my understanding that the term j = i will be executed before ++i in the statement j = i, ++i; Does the C++ standard guarantee that j = i will be e...

[9 replies] Last: No, the OP just grabbed a random post from S.O. https://stackoverflow.... (by lastchance)

by m2020

Efficient way to covert a file to DAG

Hello everyone I have to read a file which describes a circuit and convert it to Directed Acyclic Graph. The files formats looks like: # of nodes 11 # of e...

[11 replies] Last: Good catch. Sorry about that. (by dhayden)

by afSora

Pointers

Could someone explain how this code works. #include <iostream> using namespace std; int main () { int firstvalue = 5, secondvalue = 15; int * p...

[5 replies] Last: Thanks for explaining it, I understand it now. (by afSora)

by CakeByTheOcean

int compare operator as a function

Hi everyone. I want to get the int compare operator <, =, > as functions. If I can get them as function, I can treat them as other function's parameter for call...

[4 replies] Last: [quote=CakeByTheOcean]I want to get the int compare operator <, =, > a... (by lastchance)

by CollinsLainzo

isODDHigh Function

Write your question here. Please I need urgent clue on this: Write a method named, isOddHigh, that takes as input, any array of integers and it returns tr...

[2 replies] Last: #include <climits> // return the largest even number in the array //... (by JLBorges)

by D40603874

Creating and ATM simulation

I keep getting this code between line 55 and 60 Unhandled exception thrown: read access violation. **ptrBalance** was nullptr. //bring in our libara...

[7 replies] Last: double* ptrBalance; *ptrBalance += deposit; And what do you thin... (by MikeyBoy)

by Bobbysokhi

Functions & Selections

I am trying to create a game where: 1.The first player’s turn starts by rolling five six-sided dice. 2.If the average of the dice is less than or equal ...

[1 reply] : Use a " do{....} while(score<50); " loop. (by Zaap)

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