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General C++ Programming - August 2015 (Page 16)

Link error(PPP using C++, Chapter 12)

Hi, I'm reading Bjarne Stroustrup's "Programming Principles and Practice Using C++" and I got a problem in Chapter 12. I keep getting "unresolved external symbo...

[4 replies] Last: JLBorges, thanks for your wibsite. Now I have at least one program tha... (by LawrenceCao)

by leonid1990

tellg() vs. tellp()

Hey there, please somebody explain why the output is 7 and not 8: #include <iostream> #include <fstream> using namespace std; int main() { ofstream outF...

[2 replies] Last: Thank you, Peter! (by leonid1990)

by DLCom

Math Parser failing - can't get the error

#include <iostream> #include <vector> #include <conio.h> #include <string> #include <sstream> enum tokentype {TT_NUMBER, TT_PLUS, TT_MINUS, TT_MUL, TT_DI...

[no replies]

by mohdadnan111

how to tranfer data from .csv to a double dimensional array in c++

#include <iostream> #include <string> #include <fstream> using namespace std; int main () { ifstream inFile; inFile.open("C:/Users/Saad/Desktop/book2.c...

[1 reply] : Please, edit your post to enclose the code in code tags and be systema... (by keskiverto)

by geeloso

Using STL's qsort function for a vector object

Before I offer any elaboration on the specifics of my problem, I would like to know the answer to the following question: Is it at all possible to use the S...

[5 replies] Last: vec which is the name of the vector object could be viewed as a poi... (by MikeyBoy)

by mohdadnan111

Error while Compiling : Expected ; before int

#include <iostream> #include <string> #include <fstream> using namespace std; int main (){ ifstream inFile; inFile.open(":C:/Users/Saad/Documents/number...

[5 replies] Last: IF you can use the code tags, we can see the line numbers and see prop... (by TheIdeasMan)

by Shashank Setty

Need help with a basic c++ code

#include<iostream> #include<conio.h> #include<string> using namespace std; class Contact { private: char Name ,Num ; //operator overloading friend ...

[3 replies] Last: This one might be easier to understand http://en.cppreference.com/w/c... (by SamuelAdams)

by Shashank Setty

Need help with a basic c++ code

Hello everyone, Can someone create a program for the following question let the program be as simple as possible without any UI? question: "Create a base c...

[2 replies] Last: I can do it, $200, oh wait, this isnt the job board, go post there... (by SamuelAdams)

by ZaitoN

C++ program that types when X happens.

Alright so basically I am working on this program that will unscramble a certain word. How I want it to work is this: a) I hit a button to let it know that it m...

[1 reply] : These might help, or they might just confuse you... I don't really und... (by SamuelAdams)

by RealGiganitris

Looking for a function.

So, here's the problem. I've got a happy long double named Fred. He looks like 9.56756785685685682595. I need a function so I can round him down that takes TWO ...

[3 replies] Last: Thanks guys. (by closed account G1vDizwU)

by yj1214

Why put 'f' when using float?

float x = 5.0f; I heard that without putting the 'f', compiler thinks that x is double. But I declared what type of variable i'm going to use by puttin...

[2 replies] Last: > float x = 5.0f; > I heard that without putting the 'f', compiler t... (by JLBorges)

by saadusmani

How to run loop in background?

I am making the program in which i require to run two function at a time. One is time function which runs in background and others functions which will work in ...

[2 replies] Last: I'm not sure OP has convinced me that multithreading is the answer he ... (by Duthomhas)

by BarelyOtaku

Error with I/O function (1,2)

Hey guys I'm getting an error of "Terminate called after throwing an instance of 'std::logic_error' what(): basic_string::_S_construct null not valid All I di...

[29 replies] Last: #include <iostream> #include <string> #include <vector> #include <std... (by JLBorges)

by stridder

Linker error: undefined reference to methods of template class

Hello, I just introduced templates into my classes and getting the following linker error (on linux): Linking CXX executable main CMakeFiles/main.dir/main....

[7 replies] Last: instantiating the template class will generate the code for all non-te... (by ne555)

by ChajusSaib

Problem with equal_range

So I've got a problem and a question, so firstly I'll ask the question, how come I cannot define files(line 91) as std::vector<std::vector<Sales_data>> files =...

[4 replies] Last: use braces (by ne555)

by ninjaS

read text file in an Array

I am trying to read a text file "b.txt" in an Array The file is sinply,it looks like: b.txt 15 2 43 5 22 3 55 3 5 7 8 5 21 43 54 6 all lines have the same am...

[1 reply] : ok, I'll change the solution, it makes 2 scans to the file instead of ... (by ninjaS)

by ElTucan

Grading program using structs; ordering by rank and by name

This is an assignment I wasn't able to fully implement. I'm reading in students' scores and have to rank them according to their score and name. Originally we w...

[5 replies] Last: Thnx for the input TheIdeasMan ;) I didn't know that I couldn't use a... (by ElTucan)

by Duthomhas

overload scoped enum assignment operator

Yeah, I don't suppose there is a way? (It's totally legitimate! Honest!) [But it's probably a design flaw.] I'm playing with some colors. There are f...

[2 replies] Last: Thank you, that answers my question. I'll continue to use the explicit... (by Duthomhas)

by redstone266

Please help,,basic c++ question

Write a C++ program that asks users for two numbers and a choice of the following operations: addition, subtraction, multiplication, division or exit the progra...

[4 replies] Last: @TheRabbitologist Didn't really notice the reference passing. @redst... (by whitenite1)

by s2y

pointer to a function

given: the function name as a string need to get a pointer to a function Please help in the implementation, if it is possible to do

[4 replies] Last: Thanks to all that helped! (by s2y)

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