General C++ Programming - C++ Forum

I generate a data set and saved in txt file. I am wondering how to read those data in c++? They are time series data and high frequency. i.e., large dataset. I...

[1 reply] : http://www.cplusplus.com/doc/tutorial/files/ (by MiiNiPaa)

by highronn

How to know if std::cin is blocking a thread?

Hello, I want to synchronize 2 differents processes by using cin has a synchroniser. one proccess is a consumer the other one is a producer. But I want to pro...

[1 reply] : there should be a way which should involve multi-threading. Aceix. (by Aceix)

by vanillarainbow

Comparing a string in input to a dictionary file

Hi all guys! I will explain better myself. What I would like to do is: - input a string (char as I will ONLY type words) - automatically scramble the letter...

[2 replies] Last: This is for my knowledge, I already know a bit of c++ but not at this ... (by vanillarainbow)

by nukermachin

Hi Im not sure how to do this, may someone explain me how?

The value of sin(x) can be approximated by using the formula: sin(x) = x −x3/3!+x5/5!−x7/7!+x9/9!· · · Using this formula, determine how many ter...

[3 replies] Last: The hint pretty much just tells you how to solve the problem. First, c... (by ModShop)

by NevilEyes

code for inserting element from end in a linked list ( not working!!)

This is the code The program executes but as soon as i enter the first element it doesnt respond!! #include <iostream> using namespace std; ...

[1 reply] : if(last=NULL) // == not = (by TarikNeaj)

by johanflamand

What's the best library for handling MySQL databases?

Hi, I'm looking for the best C++ library to insert,update and delete entries in a MySQL database. I've found a lot of libraries online but I'd like to use the ...

[no replies]

by isaacthebro

functions for linklist dont work

this are two functions that are for adding and removing and item on links list that im using in a nother program im just not shure how to fix the erors mainly ...

[4 replies] Last: ok I got it thanks so much (: (by isaacthebro)

by nanaluPH

Need fixing and refining

Create a program that lets the user enroll a college student. Discounts are given for the in percentage. The user will have unpaid balance if he/she chooses to ...

[3 replies] Last: Why does it need fixing? Does it not work? Do you get Errors? If so, ... (by TarikNeaj)

by csstudent123

pointer memory allocation

Hey guys. I am back. My semi starts soon. I wanted to know one essential thing. How is memory allocated in a pointer? Let me answer this and correct me if I am ...

[14 replies] Last: thanks..a relief (by csstudent123)

by Rodr1697

Nim 2 player?

This is the code that I have created for the game Nim. So far my code works perfectly fine (or at least exactly the way I want it to). Currently, the user can o...

[3 replies] Last: Still: change "Player 1" -> "Player " << current_player To detect... (by coder777)

by cmajor28

Int24

I'm doing some dsp stuff and I have this __int24 struct. However, I'm getting this error cannot convert from const int24_t to int32_t. How can I fix this? ...

[1 reply] : cannot convert from const int24_t to int32_t. You cannot apply non... (by MiiNiPaa)

by eldiener

Macro replacement interpretation

Section 16.3 paragraph 4 of the C++11 standard reads: "If the identifier-list in the macro definition does not end with an ellipsis, the number of arguments ...

[1 reply] : > Does this mean that invoking a macro with more arguments than there ... (by JLBorges)

by signogru

Help! error LNK2019 and fatal error LNK1120

I keep getting error LNK2019 and fatal error LNK1120 for my program. Any idea what might be wrong? Thanks #include <iostream> #include <string> using namespac...

[4 replies] Last: Oh wow I can't believe I made such a stupid mistake! Ok I got it worki... (by signogru)

by Gyiove

communicating with other program ( creating debug program )

Hello everyone! I was thinking about creating a simple debug program. Here's how it should work: If my real program have been compiled in my own debug mo...

[1 reply] : Look at ptrace. It lets you look at system calls from other programs, ... (by fabtasticwill)

by thevirus

Loops Help Needed how to divide this code?

#include <iostream> #include <string> #include <cmath> #include <iomanip> using namespace std; int main() { int x, y, tempL, tempR, middle; cout << "P...

[no replies]

by cmajor28

Assign char*[] to void**

So I'm using an old API and it has a problem I don't know how to solve. It's something like this. int function(int selector, void **value) { c...

[6 replies] Last: This actually works. Everything is returned correctly. And that void**... (by cmajor28)

by nileshjdarji

Explain

Can someone explain me the following statement in detail: NSDate *now = [NSDate date]; Thanks in advance.

[4 replies] Last: Got it now. Thanks a lot for explaining in detail. (by nileshjdarji)

by Gbanawoman

Guessing Game

Hi guys! I wrote a Guessing Game program for a class project and what I intend to do is as follows: This Program is a Guessing Game! There is a number that you...

[3 replies] Last: Your guessing game is far from being correct. There are a bunch of c... (by TarikNeaj)

by closed account iy5G1hU5

Substitution Cipher, Strings and Functions

A

[13 replies] Last: What you have done is extremely rude and selfish. By blanking your pos... (by LB)

by isaacthebro

class function for removing and adding linklist dose not work

int deleteNode(struct node *h, string name){ struct node *p, *q; p=h->next; q=h; while(p!=NULL){ if(strcmp(p->name, name.c_str())==0){ q->n...

[1 reply] : Continued in http://www.cplusplus.com/forum/general/160253/ Please do... (by LB)

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General C++ Programming - March 2015 (Page 8)