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General C++ Programming - March 2019 (Page 9)

random number grid using matrix and for loop

Hello I am currently barely starting out with c++ and am stuck on the second part of an assignment that requires me to create a grid of randomly generated numbe...

[no replies]

by sev908

Char Array Augmented Grammar For LR0 Parser Question

Greetings, I am creating a program that will find the canonical LR0 sets for a given grammar. To start I have 2 char arrays, production, and production2. pro...

[6 replies] Last: Thenk you for pointing out the production 2 error. After talking to s... (by sev908)

by Mungo1981

Silly Problem with Pointer call by reference

Love Community, I have a Problem with Pointer transfere betwen Classes / Objects. I have a Class-A, this has as a public member a Pointer on a std:vector<Clas...

[1 reply] : Hate Dude, To fix your Problem with Pointer transfere simply use the x... (by dutch)

by wowisay

generating basic sequence number

i want to generate a number with n digits and all digits being same eg the number can be 22 88888 44444 3333 but this block of code #include <iostream> ...

[5 replies] Last: thankyou everyone , that was a compiler issue (by wowisay)

by GhooSe

crypto cod

Write a procedure that allows the user to input one positive integer and then outputs the difference of the closest higher and lower primes to itself, that is,...

[9 replies] Last: woww thank you bro (by GhooSe)

by darkknight914

Undefined Reference in Polymorphism

I keep getting and undefined reference error when I implement my prototypes. I have the following classes Shape, Box, and Van as follows: class Shape { publi...

[1 reply] : ¿undefined reference to what? http://www.cplusplus.com/forum/general/... (by ne555)

by wandou99

NEED HELP!!! cstring

Can anyone help me to write a simple sample code about to read the file line by line and store it into cstring? The file contains few rows of sentences.THANK YO...

[4 replies] Last: This is clearly a homework assignment, and OP is asking us to do it fo... (by Duthomhas)

by CollinsLainzo

Why is isHodder() not working. What am I Missing?

I have this problem, A hodder number is one that is prime and is equal to 2j-1 for some j. For example, 31 is a hodder number because 31 is prime and is equal...

[12 replies] Last: I'm not sure if you have a question here. So, I'll just comment on th... (by doug4)

by dbarclay100

Nested for loop

Im trying to write a nested for loop that gets the data from an input file. The for loop will check the student and the 3 courses they are taking the 5 test fro...

[1 reply] : Double post: http://www.cplusplus.com/forum/beginner/250520/ (by Enoizat)

by bekolirst

Stopping file input when a certain word is encountered

I'm working on a c++ program that is supposed to eventually be like history in google , i mad my self some fake address and a now i need to take certain word fr...

[1 reply] : just stop the loop. presumably you are reading in a loop, with a getl... (by jonnin)

by Hex213

function in parameter with return

Good afternoon, I need help with returning value from function. How can I save the return value to local variable ? I have problem with access to return value. ...

[8 replies] Last: thank you very much, I found two mistakes and I corrected them thanks ... (by Hex213)

by jacapiwsko

Cannot insert variable into struct.

In header file I have struct like this: typedef struct module { struct module *module; struct mod *mod; DWORD Base, Size; ...

[7 replies] Last: Do you know what strcmp does? http://www.cplusplus.com/reference/cstr... (by doug4)

by elsa

Sorted List deleteItem & insertItem not working

Hello. My deleteItem and insertItem functions are not working: when you try to delete an item from the array it says "the item is not in the list"...and when yo...

[4 replies] Last: int SortedList::linearSearch(int item) { int location = 0; while ((... (by ne555)

by phoko

need insight

I have come across: "std::cout: or "std::cin" and others. Why not the simple: "cout" or "cin"? what special function does the prefix "std" perform? ...

[7 replies] Last: Thank you everyone, all was helpful. (by phoko)

by LucasArroyo

simple merge

Write a function that merges two vectors, alternating elements from both vectors. If one vector is shorter than the other, then alternate as long as you can and...

[4 replies] Last: Thank you very much @Ganado big help, and I learned a lot, and sorry i... (by LucasArroyo)

by AlreadyTaken

VSFTPD not working with URLDownloadToFile

Hi, I'm using URLDownloadToFile function to download a file from FTP server: ftp://username:userpass@domain.com/test.file It works well with FileZilla ...

[1 reply] : nevermind with this piece of shit, i used proftpd and it works fine. (by AlreadyTaken)

by Tikermothyn

Using variable as name for a variable in a class.

I looked into some other topics on here about using a variable as a variable name by doing for(int i=0;i<numP;i++){ // numP being the number of people ...

[10 replies] Last: Propos to you, Tikermothyn , for both having a brain and being polite... (by Duthomhas)

by CollinsLainzo

Need explanation to the function isVesuvian()

Hello guys, I have this question: A number n is vesuvian if it is the sum of two different pairs of squares. For example, 50 is vesuvian because 50 == 25 + 25 ...

[1 reply] : Why do you think the function works? Run it with a main that passes it... (by dutch)

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