General C++ Programming - C++ Forum

I have problems , I need to compare two values the value entered first and the second value and make comparisons to sort the values in increasing or...

[1 reply] : instead of Get...() functions left of = use the appropriate Set..... (by coder777)

by xenon7568

[How] Write simple hash function

How to construct a simple hash function ? When the program executes, it will ask for your name. Type your name and it will print out a "hash code" (a number) fr...

[2 replies] Last: #include <iostream> #include <functional> int main() { std::stri... (by JLBorges)

by Cotumb

MMORPG Coding

Is it possible to use C++ to make a MMORPG such as RuneScape, and ROBLOX, with the graphics of COD, Halo, and Battlefield 3?

[1 reply] : No reason why you couldn't. It might not be the best tool to handle e... (by MikeyBoy)

by sxpro

Pointer to class error

Hi, I have an error and it says: expression must be a pointer type to class Here's my node class class node (node.h) { public: node* pNext; citizen* p...

[6 replies] Last: File node.cpp shall include header citizen.h that to know the definiti... (by vlad from moscow)

by nehajain10

URGENT - Controlled Read and Write rates of files

need to create a program for the following problem 1. Program takes messages as input at a rate “X” msg/sec, and outputs those messages at “Y” mgs/se...

[1 reply] : what have you got so far? (by mutexe)

by xenon7568

Pascal's triangle

How can I find this equation ? Derived from where ? x = x * (i -k) / (k +1) #include <iostream> using namespace std; int main() { int n, k, i, x; ...

[1 reply] : this http://en.wikipedia.org/wiki/Binomial_coefficient will help you e... (by Maniax)

by klw

Beginner's question about matrices

I ultimately need to read in a binary file of unsigned ints into a matrix. The goal is to manipulate this matrix and extract a submatrix. (The binary is a 3D im...

[3 replies] Last: v is an int. &v is an int* You need static_cast<char*>(&v ) as... (by kbw)

by bartoli

[C] Trying to solve type conversion warning

I can't seem to correct a warning i get with -Wconversion (gcc) Some minimal code that displays it : unsigned char mask2=0; mask2 = (~mask2); The wa...

[2 replies] Last: That's what i'll do if i have to, but i'd have liked a soluton without... (by bartoli)

by jayw

need help with undefined and must have class struct union errors and imputing switchcase?

here is my code I am getting simple errors like unneeded int cin and cout undefined any help given is apprciated #include <iostream> #include <stack> #incl...

[1 reply] : std::cout << number_c << " converted to hexidecimal is: " << hex << n... (by coder777)

by vlad from moscow

Building a special order of elements for a given sequence (1,2)

Let assume that there is an array of integer numbers in the range from 1 to N that are located in the ascending order. For example #include <iostream> #inc...

[27 replies] Last: Start iterating from the beginning. Copy first element to beginnging... (by abhishekm71)

by kaidto

Question about smart pointers. (scoped_ptr)

Actually I'm studying those smart pointers. But I'm having a question. Having this code, #include "stdafx.h" #include <iostream> #include <boost/sh...

[2 replies] Last: D: Ok!, it was weird, It never happened before to access a method that... (by kaidto)

by xenon7568

Explain random number library

Anyone can explain this ? I just want to study the codes in deep how the integers randomize #include <cstdlib> #include <ctime> #include "random.h" /* This...

[1 reply] : This doesn't generate a random number, it just puts a bound on the ran... (by LB)

by Guilherme Oliveira

Second C++ Game!

Hello! Here's my second c++ game, made with SFML 2.0. It's a simple game where you have to drive a car to the end of a road. It has only 3 levels by now. Ho...

[1 reply] : Why use such a trash file hosting service? I had to make an account ju... (by Branflakes91093)

by Tobestik

Ngram issues.

So I'm having an issue progressing in this program I'm trying to write for class where I have to write the implementation for it. I get what I have to do accord...

[no replies]

by tnjgraham

How to convert int to char

Hey, I am tying to convert an int to a char. Below is an example of the code that I have but I am getting an error('=':left operand must be l-value). I am not ...

[4 replies] Last: itoa is not defined in C++ or many compilers. Using sprintf or using t... (by ostar2)

by zmilam

Trying to figure this out.

I built a program that breaks down breaks and lunches while at work. However I want it to go off of a 12 hour clock. here's what I got so far; #include <cstd...

[no replies]

by Sugartastegood

efficient way to draw tiles

Hi, I'm wondering if there is a better way to draw tiles with a transition from grass to sand. So that the tiles blend in together. My map file that i use lo...

[3 replies] Last: ahhh, your trying to make a background generator. I tried to do that o... (by TinyTeeTree)

by Ghilliedrone

Function not working properly

When i was testing a piece of a larger program, i tested this function and it doesn't work as it should. #include <iostream> #include <string> #include <cma...

[2 replies] Last: Thanks, that fixed it. (by Ghilliedrone)

by Konstantacil

The output is error, please help :((

#include <iostream> #include <cstdio> using namespace std; int main(){ int T, kasus = 0; scanf( "%u", &T ); while ( T-- ){ int n, m, arr , a...

[1 reply] : I think that you don't want to print "&answer" but instead "answer". A... (by ats15)

by xwielder

How to properly free() a _strdup variable

How to properly free() a _strdup variable? Here's what I have: File prof.cpp // Local function void free_proID(struct prof_Name_ID *proID); // L...

[14 replies] Last: True. Thank you. void free_proID(struct prof_Name_ID*&proID) works ... (by xwielder)

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General C++ Programming - June 2013 (Page 26)