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Beginners - July 2018 (Page 3)

reading words from file into string ?!

So I'm trying to read from an input file into a string, where each word is put into a separate element, and each word is seperated by a space, punctuation, or ...

[1 reply] : #include <iostream> #include <string> #include <vector> #include <cc... (by tpb)

by luciusFernatore

an exercise by a begginer (true begginer)

Good evening from colombia to all. I am learning programming in c ++, and doing some exercises. Might you check this one?. Regards and thanks. /*Square of ...

[3 replies] Last: thank you two , the tips i will keep it in mind. Muchas gracias, (by luciusFernatore)

by Willogical

Hello World! And the console stays open. No fuss!

Took "Hello World" and used a simple loop to force the console open. thnx @manga for the advice! #include <iostream> using namespace std; int main() {...

[7 replies] Last: mbozzi: Agreed. Although I will add that TUIs are legit, if properly i... (by helios)

by apm11

My code doesnt work and its going to infinte! I am stuck :(

Why is this code not working and going to infinite? X is read and I must find the X prime number. Example: X=4 --- the fourth prime number is 7 and so on. Thank...

[2 replies] Last: THANK YOUU! You saved meeee! Thanksss again (by apm11)

by closed account 9h5X216C

Hi, I'm just learning c++ and really need your help to program as stated by topic. Basically, I have a text file called 'example.txt', and within this file, th...

[2 replies] Last: Hello justagreenie, Some FYI that might help. In line 5 if you are n... (by Handy Andy)

by yoli1780

deleting variables from structure

Hi everyone, I need some help. I am trying to write a program in c that completely deletes all of the variables of this structure; struct user { char...

[9 replies] Last: Might as well add my two cents, despite the topic being checkmark'd. ... (by Ganado)

by rgilliland

How do I eliminate the need for vectors?

I had some help coming up with this answer to a problem thus far, but it's not quite what I need. How would I rewrite this code without the use of arrays? Any a...

[13 replies] Last: no problem; was fun ;D. Use as much as you want. I should note, for ... (by icy1)

by yoli1780

structures

I have the next code: new_->first = NULL; new_->last = NULL; new_->sum = 0; new_->len = 0; is there a faster way you can change the structure vari...

[2 replies] Last: thank you :) it works now (by yoli1780)

by closed account 9h5X216C

How to Initialize Integers + String Arrays

Hello, I'm new to C++ and need help! I'm currently learning how to do 2D arrays or just 1D arrays. I have a text file with the following contents shown below...

[7 replies] Last: @justagreenie , you still didn't properly explain the file format --> ... (by icy1)

by mycuser

declaring a vector

Write your question here. I'm using code::blocks and i am getting this error : ||=== Build: Debug in newbase (compiler: GNU GCC Compiler) ===| C:\mc\le_c\n...

[4 replies] Last: Thanks for further clarifying, and your patience. I have pretty printe... (by mycuser)

by b3y0nd

Using pointers for user defined array - calling array in function

First go through at using pointers to allow user defined array index. I can create the array - ptr1 and show the contents of the array. I am unable to "b...

[17 replies] Last: I cannot get the displayarray function to run "to run"? You cannot ... (by keskiverto)

by JeffR1992

Accessing values in an unordered_map

I have the following code that checks the value of each key in an unordered_map called char_count , and returns false if we find a value that is not equal to...

[1 reply] : for(auto i:char_count){ if(i.second != 0){ return false; ... (by ne555)

by Unknown1234

Help Begginer problem c++ segmentation "fail"

Hi, I try everything to fix this with pointers and etc... But I dont know if is me that doesn't know used them or not... Whatever, I keep getting this message i...

[3 replies] Last: Also, please don't use l as a variable name. It's too hard to tell the... (by dhayden)

by amiable143

segmentation fault on "End Of Fun" problem on SPOJ

I was solving End Of Fun on SPOJ. Everything is working fine for values of N smaller than 10,but for N > 10 it's giving segmentation fault.I wasted my whole day...

[16 replies] Last: Take #39 and #40 and for n>10 , testcases..it gives segmentation fault... (by amiable143)

by gboro54

JNI Help

So I am trying to wrap Flatbuffers with JNI so I can dynamically return the contents of a buffer as a JSON string using the FBS libs. I have the below code and ...

[8 replies] Last: helios - Thanks for the help. I initialized the pointer and all is wel... (by gboro54)

by Ariansh

Member initialization list

Hi. I understand that when we have constant variables we have to use member initializers to initialize those constant variables. But my question is why should ...

[3 replies] Last: Initializing member variables the old fashioned way works most of the ... (by Manga)

by sinept

win32/c++ modeless dialog hides main window behind other apps on close

I have a modeless dialog (referred to as Toolbar) with a close control and two buttons that each open their own messagebox. If I open the toolbar, press a butto...

[5 replies] Last: @Thomas that's the tutorial I'm learning from (or an excerpt from it).... (by sinept)

by Brittbritt213

assignment help: code gets thrown into infinite loop.

Im creating a dice game with 2 modes (play with 1 or 2 dice) with 2 human players. When i select 1 dice the program runs as it should, but when i select 2 dice ...

[1 reply] : if (roll1 || roll2 == 1) and else if (roll1 && roll2 == 1) are the... (by Too Explosive)

by closed account 4z86RXSz

Partition of n into atmost k distinct partitions modulo m

Given N and K we have to find the number of partitions of N into at most K parts modulo m. I was wondering if there was any formula to calculate this type of qu...

[2 replies] Last: > I want to create a dp table to find the value your recurrence is p{... (by ne555)

by JeffR1992

Initializing a vector of vectors

I came across the following piece of code, and I'm struggling to figure out exactly what's going on: int n = 10; std::vector<std::vector<int> > adjacencyMatr...

[8 replies] Last: The cache for the most part takes advantage of locality of reference, ... (by helios)

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