Beginners - C++ Forum - May 2016 (Page 11)

Why doesn't updating pointer variable change the variable that it points to?

I've got a class called state class State{ double x,y,z; std::vector<double *> state = {&x,&y,&z}; void set(int id, double val){*state = val;} }; Most of ...

[2 replies] Last: Yeah, super! Actually I've had a lot of problems pop up in the rest of... (by ptitz)

by lynlyn9

dsda (1,2)

sdasdsada

[30 replies] Last: @JLBorges: I understand sir. Thank you for all your help. (by lynlyn9)

by wavy19

regarding headers(unknown type name!,nested too deep;y)

hello there hope you doing well. so i have this problem when i am trying to make a declaration for a child class in a parent class it gives me this error: unkn...

[2 replies] Last: Are you sure this relationship makes sense. What is an "events" and is... (by Peter87)

by chusaijames

Help with my program homework

I have no idea how write this code. anyone can help me? Write a program that uses stacks to evaluate an arithmetic expression. The program takes as inpu...

[1 reply] : can you post some code, things you have attempted? You can get lots of... (by Bdanielz)

by closed account 3voN6Up4

Find Lowest and Highest of Array

Hey guys, I am having trouble with finding the lowest and the highest of an array. Basically, there's a string array shown below and an int array. I want to fin...

[10 replies] Last: const int size = 5; int a ={2,5,3,87,9}; int min,max; min = max = a ... (by Ericool)

by Arslan7041

Char array questions

Questions from a noob here about char arrays. So I understand that operator<< is overloaded for char* to print all characters until the null terminator, so u...

[7 replies] Last: > So in c++11, char* is different from char ? In every version of C++... (by JLBorges)

by MultiMedia

How can I achieve this?

I want to be able to ask the user for a number, and then I want to delete the sentence and replace it with another sentence without the program moving onto a ne...

[4 replies] Last: Hi, Check out the ncurses library Good Luck !! (by TheIdeasMan)

by zee2200

Draw a circle in opengl but a line is going from the circle to the origin point

Hey guys, so I'm working on a game engine type thing right now and i have a sprite class that will be handling initializing and drawing shapes to the screen but...

[2 replies] Last: oh whoops sorry, i should have specified i tried taking the sine and c... (by zee2200)

by Antereson991

loop coding problem

/* Question : * Modify the program to find the sum of the * square of the numbers from 1 to an upperbound * ie, 1*1 ,2*2...

[14 replies] Last: Thanks ^ dhayden I understand it . (by Antereson991)

by jaykeblakk

Using 3 classes in C++

Hi there. I'm having trouble with my classes. I'm creating a program that gives you all the information that you need when you place an order, and I've complete...

[2 replies] Last: Ah. I see now what the problem was. I need to use a public method inst... (by jaykeblakk)

by closed account oEwqX9L8

Classes and pointers to a vector

I have an assignment to use a previously created class and vector to take names as input, create and assign them to a new pointer, and then store them in the ve...

[3 replies] Last: You can print std::strings using std::cout << , but note that your ve... (by helios)

by abdullah ibrar

how to use random() function in dev c++?

ow to use random(25) function in dev c++? which header file will use here?

[3 replies] Last: The solution is stated in the error message: use the -std=c++11 comp... (by Peter87)

by abdullah ibrar

How randomize() function works on dev c++?

How randomize() function works on dev c++? which header file is used for this function?

[no replies]

by abdullah ibrar

how to use delay function on dev c++

this program dont work on dev c++ , how can i use delay() function on dev ? #include<stdio.h> #include<stdlib.h> #include<iostream> using namespace std; ...

[2 replies] Last: thanks chervil (by abdullah ibrar)

by closed account 3voN6Up4

Looping Confusion

"The program should have a loop that allows the user to continue entering numbers until an end sentinel of 0 is entered." (From the comment block) I attempte...

[2 replies] Last: Thanks so much, I also have learned a new thing today. The "!". (by closed account 3voN6Up4)

by coll97

Searching words in a text

Well I have this funcion: vector<string> SequenceOFwords(); //The number of strings is undefined. void the_right_text(Text& t, SequenceOFwords&){ } --------...

[no replies]

by evy

stdafx.h problem

i did small project ..when i try to run it the compiler says did you forget to add stdafx.h to your cource files and when i do it to all my cpp files its say...

[1 reply] : When you create a project turn off the precompiled header file option. (by Yanson)

by Leo Mingo

How to make a bi-variable equation solver?

Like y = 51x - 51; y = 31x + 22; How to make a program to get the results of x&y? thx :)

[no replies]

by badboy1245

Reading from URL

How can I read wordox lettters. I want to write a program that will read the wordox letters and display them on the console. how can do that? wordox is a game ...

[no replies]

by Cheche01

File stream condition. To Read if file has content else write info

What condition shoul i use? if notepad/file has contents it will display the contents. but if the notepad/file has no contents, it will automatically let th...

[2 replies] Last: Edited my code. I'm sorry but how do you do it? (by Cheche01)

C++

Forum

Beginners - May 2016 (Page 11)