Beginners - C++ Forum

Big O of a function with a function that has not been implemented

Hi, I have a function that I need to find the Big O of, and have already written my notes down, but am not sure whether or not my answer is correct. So what ...

[4 replies] Last: The formal answer is either O(N log(N)) or O(N log(N) + N) Since... (by mbozzi)

by Faggio

cast template

Is it possible to cast a string to a template? x= (T) y; where T is my template type, y is a string and x is of type T.

[3 replies] Last: stringstream? Or have I (as is quite likely) got completely the wrong ... (by lastchance)

by zspar

Chained hash table Insert function

Hello, I was assigned to create a chained hash table using a vector of vectors. It is designed to hold objects of type Entry. I have written all of the function...

[6 replies] Last: Line 101: you leave num_entries uninitialized Line 110: you set num_e... (by dhayden)

by Claudius7

How to make and copy a project in CodeBlocks?

I have two related questions. I normally use Code Blocks for C++ programming. Now, I have a collection of files C++ that I downloaded from a book. I want to...

[5 replies] Last: Thanks jlb, but I'm afraid I didn't understand much of your explanatio... (by Claudius7)

by Najam489

Error

Why Its Not Compiling #include <iostream> #include <string> #include <cstdlib> using namespace std; void square(double); int main() { double num;...

[2 replies] Last: Got It Thanks (by Najam489)

by chun2088

How to print inputted char array seperately

Hello fellow C++ learners! I'm very new to this Array concept and I'm having trouble with doing a certain task I made up for myself. The QUESTION IS: INPU...

[6 replies] Last: if you are learning, get away from character array strings as fast as ... (by jonnin)

by RezaAb

splitting a CSV file to different columns

Hey guys, I have a CSV file including double values in two columns, and I want to split the file and copy each column into a vector. For example: A.csv :...

[2 replies] Last: Yes, you are right. I solved it, thanks! :) (by RezaAb)

by joemf88

How do I list the ABC's vertically using counter control loop?

#include <iostream> using namespace std; int main() { char letter; for(letter = 'A'; letter <= 'Z'; letter++) cout << letter; return...

[7 replies] Last: an alternative version using the OP for loop: # include <iostream> ... (by gunnerfunner)

by JDRhoads10

Starting Attempt at Menu with Win / Loss Results

Hello, So essentially I am taking the knowledge I have acquired so far to put together a small game for a homework assignment. My goal is to give the player ...

[2 replies] Last: for a homework assignment. Does it means you do not want the soluti... (by Enoizat)

by mmgh

gprof on Mac

hello everyone! I have a problem in profiling my code on Mac as it does not support gprof. My code is part of a big package which prints out gmon.out and...

[no replies]

by fivestar

Websites

Can you make websites with C++? If so, how do i get started?

[2 replies] Last: Take a look here: https://www.webtoolkit.eu/wt (by coder777)

by kielbasa

c++ help with implementing binary search tree functions

I have been given binary search tree code by my professor and I need to implement "int smallest_key()" and "int largest_key()" functions. I am not allowed to "b...

[2 replies] Last: thanks TheIdeasMan, slogging away at it, it's getting there (by kielbasa)

by MoreUmph

cin with multiple words

First off sorry im sure thas has been asked lots. I cannot for the life of me get cin to recognize my words, ive been at this for hours Im really stumped. The p...

[2 replies] Last: Thank you my man! (by MoreUmph)

by Grobeg

How to sort books?

Can anyone write a code in C++ for sorting books? There need to be textual file next to the program, with for example...: Author1 1990 Bookname1 15 Autho...

[1 reply] : This is not a homework site. We won't do your homework for you. Howeve... (by chicofeo)

by lubzy95

this code is running but not giving me the correct value of standard deviation and mode where might i have gone wrong?

#pragma once #include "stdafx.h" #include <iostream> #include <iomanip> #include <cmath> #include <fstream> using namespace std; int main() { //declare an ar...

[10 replies] Last: now it is running but once i enter the values in the console for outpu... (by lubzy95)

by Albin1997536

General directions

Hi. Im new to C++ and id like some directions to what id need to learn to write a program that can take several audio files and an image and converter the audio...

[3 replies] Last: Yes. The manual is here: https://ffmpeg.org/documentation.html (by mbozzi)

by EERD

random number

Im planing to make a simple game without classes (backgammon) i need some functions that give me opportunity to get 2 random numbers for Dice here we need for l...

[2 replies] Last: thank u (by EERD)

by Faggio

how to save a whole sentence

I have this kind of file: 1 hello 2 hello world 3 hello my world I read this file with getline(file, line) to save, with the use of stringstream, nu...

[4 replies] Last: If the leading spaces are a problem, you can also add something like t... (by Enoizat)

by JarrodBaniqued

Interest Rate Calculator

I have a defective compound interest rate calculator: it gives out incorrect results. Now, I need to maintain the existing function types without adding anythin...

[no replies]

by Hamidur

Reading a file and splitting lines into commas then push back into vector.

// I want to read from a file and split each line by comma // after splitting push those words into a vector and then display vector. // I tried this code below...

[6 replies] Last: I finally figure it out. Thanks everyone for your time. #include <i... (by Hamidur)

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Beginners - May 2017