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General C++ Programming - July 2014 (Page 23)

question-->http://www.spoj.com/problems/COINS/ My program is working for value of n upto 10^7.Earlier i used an array instead of vector and it was working for n...

[8 replies] Last: @ Disch thanks,map helped me getting the right solution.Vector was tak... (by ankur12106037)

by ashwinmo

pls help

hi I need help. ''C++ basic Program" i want to write a program to read and display the user's name.? the user can type a maximum of 30 characters including ...

[5 replies] Last: Even though you have been given limited functionality due to spamming,... (by BHX)

by m33tz

Static and Namespace

When I try to compile program, in which I have additional classes and one header file for globals, I always get an error LNK2005 which says that I have already ...

[2 replies] Last: Thank You!! (by m33tz)

by Tyler151

varibles with switch.

I am trying to create a basic switch statement that you enter a number ant it tells you the number. but if you enter something other than a integer to does a lo...

[16 replies] Last: nice! that works!! thank you for all the help (by Tyler151)

by danielmccarthy

Sqlite conversion problem

When I use the sqlite3_column_blob function it converts my date which is in a LONG format into a string format. It basically converts my time in the database to...

[6 replies] Last: I am just asking if anyone knows how to get it. I could call other fun... (by danielmccarthy)

by ankur12106037

The last digit problem

Question->http://www.spoj.com/problems/LASTDIG/ My solution is not accepted on Spoj because my solution is taking more than 700 bytes. But i m not getting ho...

[3 replies] Last: You need to apply modulo 10 to the power (a^b) mod 10 = ( a^(b/2) * a... (by ne555)

by BasV

const context iterator

Hi everyone, I have a data class that I use in 2 ways: To save data, in which case other classes have access and can modify content, and to read data, in whi...

[2 replies] Last: I'll try this, thanks! (by BasV)

by ShehabKKhan

Need HELP!! PLZ

Hi all, i am creating a program for simple calculation (+,-,*,/) and i need the user to give the 1st number, operator, 2nd number. This is what i did, is this...

[2 replies] Last: In your case statements, you are using double-quotes. These are strin... (by MikeyBoy)

by EnoughAsh2

Comparing multiple const char's at once

I have an array of const char's that are randomly selected in a loop from a list and id like to compare every newly selected choice to be tested against all the...

[1 reply] : You can do this: -Make a selection -Iterate over the already chosen... (by Mats)

by antirsi96

A little help with insertion sort

Hello! Could someone please point out the mistake in my code? This is insertion sort and even though i checked the code thoroughly, it does not sort appropriate...

[2 replies] Last: Thank you! I need to pay more attention next time! (by antirsi96)

by ShehabKKhan

C++ problem....Please help?!

Hi all! I am writing a program. This program is a very small program which finds out the grade someone got. if someone got 0 - 50, they fail. if someone ...

[1 reply] : Hi ShehabKKhan, either add: using namespace std; or use std::cin in... (by InternetSmurf)

by xuinkrbin

Recommendations for iterating over either row or column?

Suppose I want to represent an apartment building in terms of floors and rooms with a single data object. Each floor has the same number of rooms at any given t...

[7 replies] Last: > Is there a way, however, to say, "Give Me an iteratable collection ... (by JLBorges)

by mundoboy

Help C++ if problem

Im doing an IT course and this my first programming scenario (UK) - Every Mile is 50p - Engine size and rate percentage taken away from total expences // ...

[2 replies] Last: line 29 else (help=="N"||help=="n"); should not end with a semicol... (by Chervil)

by yacob1404

How do start windows programming?

I am rather new to programming (some work in PHP, Jquery, Ruby, HTML, CSS, and now C++). With that said C++ is very different. I have built very basic programs ...

[1 reply] : Look into Qt (http://qt-project.org/). You can Google tutorials for th... (by J4ke)

by thetankfrog568

vector problem

I want to make a hacking simulation. The first "mission" requires you to put 3 words in the right order, but when I do put the words in the right order, the gam...

[2 replies] Last: line 43 does not do what you want... it only checks guess3. If you wa... (by Disch)

by csstudent123

Complex recursion tracing

Hello. Anyone pls explain why I am getting 45 for this when func(12) is called int func(int x){ if(x<5) return 3*x; else return (2*func(x-5)+7); ...

[5 replies] Last: thanks all..I was not getting the return part..I was thinking it like ... (by csstudent123)

by abrawner

Rate of Rise Threshold

hi All I'm working on a project that includes a arduino, potentiometer, and a buzzer i need help figuring out how to build the code so when the pot is turned...

[7 replies] Last: You have quite a few misspellings in that code, and it wouldn't run an... (by Yay295)

by amitk3553

instance of class A vs class B derived from class A

There are two ways to access the members of class A inside class B: 1) Making an instance of class A in class B 2) Deriving class B from class A So what ...

[1 reply] : Public inheritance implies an "is a" relationship. Composition (puttin... (by Disch)

by vincegata

How can I set up two objects to communicate with each other asynchronously?

Hello, Here is what I've got so far: // build: // clang++ -g -std=c++11 -Wall main.cpp -o main // main.cpp #include <iostream> #include <thread> #include ...

[4 replies] Last: Thanks a lot! I sure need the reading to understand the code and adapt... (by vincegata)

by Idontownaplanet

How to make this function faster?

inline long long cryption(long long msg, long long n, int DorE) //Encryption with two keys { long long msgcl = 1; for(int i = 0; i < DorE; ++i) ...

[5 replies] Last: Sweet, I found something someone posted. There is an actual algorithm... (by Idontownaplanet)

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