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General C++ Programming - April 2018 (Page 11)

Given N and an NxN matrix , find the shortest path from (1, 1) to (n, n) example : Input : 3 1 2 5 1 3 1 0 8 1 Output : 7 explanation : 1 (1,1) + 1 ...

[2 replies] Last: thanks (by MattC98)

by ir8o8

Palindromes

Hey all, I am doing a Palindrome code and I need some help on my function called int palindrome_fix_location(string) part. A file, called data, contai...

[1 reply] : Hi ir8o8, I'm amazed how useless are those exercices ^_^~ I suppose yo... (by punksheep)

by Spirrwell

Non-Standard Type Sizes - Networking

Hello there! So to clarify the title, it's not guaranteed that an "int" for example will be the same size from compiler to compiler. Of course there are standa...

[1 reply] : Use plain text. When you feel the urge to design a complex binary fi... (by JLBorges)

by johnlai

Leibniz's series pi/4 = 1 - 1/3 + 1/5 - 1/7 + ....

Write a program Q3.cpp to compute π by using the following formula. pi/4 = 1 − 1/3 +1/5 − 1/7 +1/9 + ⋯ + (−1)^n/2n + 1 Q3.cpp should meet the following...

[no replies]

by technologist

include versus library files as cause of error?

Compiling I get the following output: x64_MT9V034_vid\Debug/../src/main.cpp:142: undefined reference to `ArduCam_writeSensorReg' \x64_MT9V034_vid\Debug/../...

[7 replies] Last: Right place right time. I'll make understanding this article a mission... (by technologist)

by Pumps

Reading text file into linked list

Write your question here. I am working on a program that requires me to read a text file and insert the data into a linked list. I am having difficulty reading...

[1 reply] : Hi Pumps, You were very close ^_^ You just inverted the two vari... (by punksheep)

by johnlai

I got some problem and need some help to finish the homework

Write a program Q2.cpp that meets the following requirements. a. Write a function inc()that will increase the value of variable by a specified number. Calling...

[2 replies] Last: Hi johnlai, Your teacher is very strange :P... this exercice teac... (by punksheep)

by javyesco

ANYONE KNOWS THE PROBLEM?

Anyone knows how to solve the problem I'm having #include<iostream> #include<cmath> using namespace std; #define PI 3.1415 float menus(); float optio...

[1 reply] : HI Javyesco... Your "option choice" is read into the meN variabl... (by punksheep)

by Anahuac18

Vending Machine Money Validation

Hello, I am working on a vending Machine simulator. I am missing the payment part. What I need is (using bool) a function that will ensure the user can en...

[3 replies] Last: thank you so much for your input. I will continue making those correct... (by Anahuac18)

by portpabs

Exception Handling (Exception keeps printing, ignoring other functions)

The primary issue is my exception within my test function continuously prints the exception, but ignores the rest of the functions within the try {}block and pr...

[3 replies] Last: What is the value of size when you call add ? What is the value of ... (by JLBorges)

by tina e

3D Array with multiple values in each cell- please help

How can I use objects to create an an array with the dimensions 100x100x100 where each cell contains 35 different values?

[3 replies] Last: You can not define the allocate number 100 multiple 3 times in given p... (by shivkumar12)

by G0rdano

Makefile problems with object files

I am trying to write a Makefile that will compile an example project. As long as I don't define object files it works, but when I do, compilation stops with a ...

[2 replies] Last: @doug4 Yes, that was the problem, and additionally the different sour... (by G0rdano)

by MattC98

unoriented graph

Mark invented facebook, meanwhile some people created friendships, he doesnt want to waste time so he creates a machine which sends a message to people and the ...

[no replies]

by MattC98

quest/wrong

i have this quest : https://csacademy.com/contest/round-76/task/candy-boxes/ why is this code wrong? #include <iostream> using namespace std; const int MAXN ...

[10 replies] Last: tl;dr: Your algorithm is faulty. Matt, I don't want you to have a bad... (by dhayden)

by Shishykish

Why am I getting garbage values? - Using arrays to calc polynomial roots

Hello, I am writing a program that will take coefficients of a polynomial, store them in an array and then using functions calculate the differntial of that p...

[2 replies] Last: Finished it ! Thanks for your help! #include <iostream> #include <... (by Shishykish)

by tina e

Finding the Mean of 4D image using CImg Library

Hi! I have an image im(100,100,100,35). This means that it is 100x100x100 in dimensions and each voxel contains 35 values. I would like to find the mean of t...

[no replies]

by Ralumbi

Weird error when compiling my client

Hello everyone, I am new to C++ and learning more about it, grabbed a client for a game from the internet and started to learn stuff. Now I am running in to...

[6 replies] Last: Hey guys ! Both of you thanks for responding and trying to help me sol... (by Ralumbi)

by elohssa

std::future slow

Code and tests are here: https://wandbox.org/permlink/WRrexu49nQ5vnGyb Is there a reason for this? I'd expect it to have the same performance as the 2nd test ...

[1 reply] : clang gave me there the less outrageous 34049 17024 37675 19496 https:... (by Cubbi)

by d1g1talarts

Sorting a Map

I am attempting to sort a map<string,int> varName i tried using the std sort with the built in iterators std::sort(words.begin(), words.end()); but it...

[2 replies] Last: A std::map is always sorted by its keys, by definition. (by mbozzi)

by d1g1talarts

Tally via Map/ I/O issues

I am having trouble getting my head around what exactly i am supposed to do. I am trying to create an input on output method for reading in and writing into fi...

[5 replies] Last: I am ignoring the remove non-alpha right now because the input exampl... (by dhayden)

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