Beginners - C++ Forum - May 2012 (Page 56)

Why do I get the same random number in 5000 calls?

Why do I get the same random number in this code? #include <iostream> #include <array> #include <stdlib.h> #include <time.h> //Probability function should r...

[2 replies] Last: Thanks so much for that well explained answer :-) (by waqqassheikh)

by R N

Help regarding reading a file into array

I need to read data from a file, write it to an array, and draw conclusions on that data. Here is what I have to do. =========================================...

[2 replies] Last: Well you could use something like this: ifstream read(name_deposit.t... (by uhraurhua)

by ldima

push_back single element in a vector of struct

Hello,i have a vector of struct, so defined struct Point{ int x,y; Point(int x,int y):x(x),y(y){}; } vector<Point> pts; now i want to insert e...

[9 replies] Last: ok thank you! (by ldima)

by Lookhere

Vectors

HI, I'm working with vectors, but I don't understand it at all its all so confusing, I simply don't know how to use it =[. So what I'm working with is a txt fil...

[4 replies] Last: A header should look like this for example #pragma once #include <ve... (by codekiddy)

by HamSammich

Quiz/Trivia Game Using Classes! Help needed!

Right down to the nitty-grity. I'm enrolled in a C++ course and we have a group project due Wednesday. We've been instructed to create a quiz show game that rea...

[7 replies] Last: ...odd. Some of the line numbers of the errors don't line up with the ... (by Albatross)

by BadProgrammerJoe

Trouble Understanding PARAMETERS of Void Functions

Please tell me what my n00b mistake is. :) I need to be able to use Void Functions to call upon this coding, for the int main()... But, I do not know what P...

[8 replies] Last: Bump BUmp BUMp BUMP (by BadProgrammerJoe)

by JOZZIE52

pointers

Hi ive got a program with 2 Classes, Ship and Cell, both of which are in the namespace Battleships Ship has 3 members, name, length and hits. Cell has 2 mem...

[no replies]

by Antonio97

What is the proper way to involve trig functions?

Hello, I am writing a code that will estimate an objects distance when launched from a canon at a set speed, with variable angle of canon and the what distanced...

[2 replies] Last: Wow, it's a shame how little things like that can cause a big issue. (by Antonio97)

by ResidentBiscuit

Efficient algorithm for finding large prime factors

Ok so I kind of went all brute force with this problem, and it takes forever to find a result. I was wondering what all good algorithms and/or tricks there are ...

[5 replies] Last: That should be trivial. (It can be held in a std::uint_fast64_t). In ... (by JLBorges)

by Whiplash17

C++ Inline Assembly G++

I am working on a school project. I was given the code int MemCmp( char* mem1, char* mem2, int size ) 67 { 68 int result = -1; 69 70 // BEGIN inl...

[no replies]

by lcmosley

Pointer problem

I am writing a program that has read into a file of list of presidents, lists and sorts them alphabetically, and has their corresponding chronological number. A...

[no replies]

by hexduhax

question about pointer sintaxis

hello its my first post , i have some experience programming in java an c# but i need to learn c++ because im interested on dsp development and as far as i kno...

[3 replies] Last: i found the explanation in : http://www.eskimo.com/~scs/cclass/int/s... (by hexduhax)

by strupan

Error, variable not being used?

This is for my assignment for a course, and I was wondering what is wrong with my variable total? Whenever I enter a order number, it saids total is being used ...

[7 replies] Last: NVM! I got it! Thanks so much for the recommendation on switches (by strupan)

by badkaykay

Display array data like a table?

I need to display my data in a table type form. As it stands now, it lists the data but it isn't straight. Output as it stands now: STUDENT ID---NUMERIC GRA...

[5 replies] Last: You're welcome. I'm having trouble trying to get a card game working. ... (by mikebell)

by Kazekan

Looking for feedback

Hello all, We just started learning about classes in class (no pun intended), and while I have a fairly good grasp of how to do everything, I'm positive ther...

[3 replies] Last: void coins::dispenseChange(coins buffer, coins& cash, coins returned,... (by Kazekan)

by h4344

Something Like Bukkit developing for C++?

Are there any communities that do things like Bukkit does for Minecraft with Java but with C++ (they make plugins for their server software)? I liked making plu...

[no replies]

by Rhys64

Troubleshooting

Hey i have been working on a program and i could use a little help with it. The program is rather simple it takes 10 points of user input places it in an array...

[1 reply] : #include <stdio.h> #include <iostream> //declare formal arguements h... (by ui uiho)

by kob4joy

matrix of 2 * 2

//Matrix 2*2 #include <iostream.h> int main() { int i; int mat ; int matr ; for(i=0; i<2; i++) cout<<mat<<endl; cout<<matr<<endl; system("pause"); return 0; }...

[2 replies] Last: map <int,int> matrix; another way of doing things. also <iostream... (by ui uiho)

by dbk27

Multiple Functions in a program

#include <cstdlib> #include <iostream> using namespace std; struct daytemp { string name; double temp; }; double avgwval2(da...

[1 reply] : #include <cstdlib> #include <iostream> #include <string> //you should... (by ui uiho)

by incremental

Trying to make LinkedList "copy-safe"

I'm trying to make a linked list I have created copy safe. This means that I'm trying to get a working copy constructor and assignment operator. I keep trying t...

[9 replies] Last: 1_ You are missing the point. You need to copy all the list, you know ... (by ne555)

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Beginners - May 2012 (Page 56)