C++

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Beginners - March 2013 (Page 44)

Error: string subscript out of range. WHAT'S WRONG???

string findwords(string line, unsigned startpos) { while(startpos != line.length()) { while(isspace(line )) { startpos++; } unsigned endpos...

Mar 15, 2013 at 7:28pm

[2 replies] Last: Yeah, I know the error means I'm trying to access a character in a str... (by sn1kwah)

by futurist

Program giving wrong output

So I'm just trying to write a program that calculates the area of a rectangle by unnecessarily using functions. Here's the code: #include <iostream> usi...

Mar 15, 2013 at 7:24pm

[3 replies] Last: The tutorial available on this website http://www.cplusplus.com/doc/tu... (by georgewashere)

by Pebble

Runtime_error

I'm trying to catch division by 0 (zero) using runtime_error. The program functions ok until i enter zero as the second number, Then i get a window pop-up aski...

Mar 15, 2013 at 7:10pm

[6 replies] Last: Thank's Cubbi. (by Pebble)

by EdalatF

Negative digit...

hello everyone i write a program that seperate digits of the logged number but when the number is negative it's not work... old code: int _tmain(int argc, _T...

Mar 15, 2013 at 7:08pm

[4 replies] Last: Wolfram Mathematica thinks it is positive :) As I say there is two sys... (by MiiNiPaa)

by monkeybutt

How to use class in another class?

Hello, So my program is supposed to take two numbers and form an interval(class). Then another file creates an IntervalSet(class, vector of intervals). I can't ...

Mar 15, 2013 at 7:03pm

[4 replies] Last: This may not matter but shouldn't you be using floats as opposed to do... (by lamentofking)

by dutchman

How to set a bit?

Hello, I want to write a function that sets multiple bits. Here is how it should look: The user gives a positive integer, like 5. It then prints out the bi...

Mar 15, 2013 at 6:33pm

[4 replies] Last: Thank you for replying, my program works! thanks (by dutchman)

by ussed

pointer to enum in gcc linux

os archlinux 64bit gcc #include <stdio.h> #include <stdlib.h> #include <string.h> struct vect{ float x,y,z; }; struct tchk{ enum g{i,l,m}; // i l...

Mar 15, 2013 at 5:56pm

[2 replies] Last: Thank you MiiNiPaa (by ussed)

by ihato

How to make a worded operator?

Is there a way to use letters instead of signs for operators? class MyClass { public: int x; MyClass(int a){this->x=x;} int operator + (MyClas...

Mar 15, 2013 at 5:45pm

[4 replies] Last: A comma-delimited worded operator; really a ,add, operator: My brai... (by Disch)

by eddyq

expand workspace view

In Code::Blocks, is there a way to: 1) with one click, expand the workspace view? 2) make the workspace view linear?

Mar 15, 2013 at 5:04pm

[no replies]

by omiexstrike

Fibonacci Small Problem Help

Hey everyone, I was asked to write a code that has the user input a number and then the computer calculates it for the Fibonacci series. The output should b...

Mar 15, 2013 at 4:59pm

[2 replies] Last: For me, Use <space> per number. Then print the period after the proces... (by asdlkjqweo)

by abzksm

help!!

how to output square like this ***** *....* *....* ***** using for loop any idea

Mar 15, 2013 at 4:09pm

[2 replies] Last: #include <iostream> #include <iomanip> int main() { while ( true... (by vlad from moscow)

by Alban Gashi

Help

#include<iostream> using namespace std; int main() { int const n=5; int k=0,i,B ,R ={3,-2,6,1,2}; for(i=0;i<n;i++) { if(R >3) { B =R ; k=k+1; } ...

Mar 15, 2013 at 3:51pm

[4 replies] Last: LOL Matri X it was alright i just thought i have more numbers greater ... (by Alban Gashi)

by spikeash

Exporting data to Notepad

Can you show me a tutorial to export data used on a program of C++ to a Notepad/Excel or explain me what to do :)

Mar 15, 2013 at 3:25pm

[1 reply] : Output the data to a .txt file for notepad. There's nothing special yo... (by Chervil)

by scar95

Why isn't it converging?

Guys I got this code, which uses the jacobi method to find the solution of a system of equations. The problem is, it's not converging, why? #include <iostream...

Mar 15, 2013 at 2:40pm

[8 replies] Last: What he means is this: const int EPSILON = 1e-8; will produce 0 bec... (by OxBADC0DE)

by HeavyRain

error C2143: syntax error

Hi all, I am learning C++ from 0. I have a very simple code: #include <iostream> using std::cout; using std::cin; using std::endl; int main() { int numb1; ...

Mar 15, 2013 at 2:07pm

[2 replies] Last: Thank you Peter87 so much, I had another error also: >= i instead of ... (by HeavyRain)

by tcdnewb

Search for string, print line

Hi guys I'm trying to write a code that searches a file for a string from the command line line-by-line and prints each line with the string. I have this ...

Mar 15, 2013 at 1:34pm

[3 replies] Last: #include <iostream> #include <fstream> #include <string> #include <cs... (by vlad from moscow)

by firebird102085

C++ Struct Part Type Problem

Hello Everyone, Off the bat I want to say that I am just learning programming so if my code is missing basics I apologize. I was hoping that you might be abl...

Mar 15, 2013 at 1:18pm

[2 replies] Last: Any program in C++ shall have function main. Also you incorrectly spec... (by vlad from moscow)

by backslashx00

Is it worth to keep on learning C++?

I have been learning C++ for a while, not to long as in years of experiences. I am comfortable programming in C++, do not get my wrong, I am currently learning ...

Mar 15, 2013 at 1:13pm

[6 replies] Last: In regards to the speed of C++, it translates to assembly and machine ... (by pholotic)

by benbalach

Do I need to study CS fundamentals before going to University?

At the moment I am reading "Programming Principles and Practice Using C++" by Bjarne Stroustrup. I've read half the book. In autumn I am starting university, wh...

Mar 15, 2013 at 12:50pm

[1 reply] : It never hurts to get ahead of the game. Find your passion and pursue ... (by pholotic)

by odranaiibok

How to program in C++ properly (using libraries and stuff and "what's wrong with me!!?"))

Hi i'd like to learn to use C++ for my homework assignments (instead of always using Octave). the problem is i've been unsuccessful at using "libraries" ou...

Mar 15, 2013 at 11:08am

[3 replies] Last: thanks you guys, do you have any IDE's that you recommend? (by odranaiibok)

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