General C++ Programming - C++ Forum - September 2016 (Page 14)

by sam1989

Hi, I need to store x & y coordinates of point(of type double) in arraylist, then I have to sort this with respect to values of x. I hope so I am clear. s...

[2 replies] Last: I have one more problem, std::sort(arr.begin(), arr.end()); st... (by sam1989)

by glennford49

number generator questions

#include <iostream> #include <cstdio> #include <cstdlib> #include <ctime> #include <algorithm> using namespace std; void gen(int num ) { for (int x...

[7 replies] Last: void gen(int num ) { for (int x=0; x<10;x=x+1) { num = x+... (by glennford49)

by Willo123

C++ Map Binary Tree

Hello! I have a hard time understanding the question from Alex Allains book "Jumping into C++", 6. Implement a simple map, in the form of a binary tree, that...

[17 replies] Last: @keskiverto Hmm alright, I get the first part, but do you mind showing... (by Willo123)

by Fabioc99

Reading specific lines

Hi. I have a program that I'm trying to read through a file, but the tricky part is that I'm only allowed to read some lines and store those line in c-string. T...

[5 replies] Last: Any help anyone?? (by Fabioc99)

by Salman0391992

Array of structure Print

Guys i am trying to print an array of structure but all in vain. The error i am receiving is that no suitable conversion from student to student*. Can anybody h...

[2 replies] Last: thank you very much #gentleguy and #shadder. it worked. (y) sorry guys... (by Salman0391992)

by AcarX

Parsing logical expressions

Hello. I'm trying to write an experimental database and stuck with parsing logical expressions. For example: col_1 = 10 and (col_2 = 'test' or col_2 = 'test2...

[5 replies] Last: Hi. Just an opinion. Trying to build a parser is not an easy taks. Why... (by ocreus)

by sam1989

Arraylist in c++

hi, I am looking equivalent of below in c++ ArrayList neww = new ArrayList(); neww.Add(2.02); neww.Add(1.02); neww.Ad...

[3 replies] Last: Thanks to Everyone! (by sam1989)

by MultiMedia

How to implement a general tree?

Hey guys, I know how to implement a BST, but I have no idea how to implement a general tree. Could anyone please help me? Thanks.

[1 reply] : What is a "general tree"? We can help you (find resources to) imple... (by mbozzi)

by mary101

CODE GIVES WRONG ANSWER

My solution won't work. Had to use typecasting because x was previously used as int. #include <stdio.h> int main(void) { (int) x; double y; do...

[6 replies] Last: You said, It's a 3 part assignment. So when I do int x it would say r... (by closed account GwU9E3v7)

by jlmccart01

(HW) Using array for a maze to get an object through to winning area

So I am trying to complete an assignment where we must move an object through a maze of 0's and 1's where the 0 is open to movement, 1's are blocked blocks, and...

[2 replies] Last: So I do not know what recursion is, and what would the code actually l... (by jlmccart01)

by closed account N16XjE8b

Help

How do i create a Pig Latin Converter program that will read in a file called "pigLatinFile.in" of English sentences, convert them into Pig Latin, and will outp...

[1 reply] : It appears you posted the same problem here: http://www.cplusplus.com/... (by AbstractionAnon)

by FLASHCODER

How make IAT Hook in a application using a injected dll

Hi, i'm wanting make IAT Hook in a executable application using a injected dll and already read in several websites from Google about this. So, i have a code ...

[1 reply] : Why don't you just use a hooking library? (by helios)

by sam1989

identify intersection & correct

Hi, I have to write a program, which will identify shape(this is combination of rectangle & traingle) intersecting with same shape. If they are intersecting, ...

[3 replies] Last: Do you mean something like: C2.x = C1.x + C1.radius + C2.radius; C3.x... (by keskiverto)

by Wiooooo

Username and password system

I am working on a username/password system, and I don't know how to do file saving. If anyone could help me out on how to modify this code to save the char us...

[1 reply] : Hi, please use code tags http://www.cplusplus.com/articles/jEywvCM9/ ... (by shadder)

by keanedawg

Why is there no Disjoint Set class in the STL

One of the data structures we learned about in my algorithms class is the disjoint set. We also learned about: queues, priority queues, heaps, sets, stacks, ...

[3 replies] Last: No, no. https://en.wikipedia.org/wiki/Disjoint-set_data_structure (by helios)

by cpp1024

Loop through character array until null character

I want this program to go through a character array and display each element until the null character is reached. This is basically the code from my textbook, b...

[1 reply] : Oh I see! Thanks so much! (by cpp1024)

by cpp1024

Difference between atoi and stoi

What is the difference between atoi and stoi?

[2 replies] Last: You can read the description of each: http://www.cplusplus.com/referen... (by keskiverto)

by nikki1337

Understanding why null and zero

This is this program I am reading it goes like if ( char* pointer == null ) something1 else something2 if ( char* pointer == 0 and size of array...

[2 replies] Last: possibly even more Definitely, in conditions the comparison of point... (by keskiverto)

by CopaceticCoffee

Printing Prime Numbers

Hey everyone, Can anyone give me some tips on how to print prime numbers from 2 to 100,000? I know I should be using a for loop but I'm unsure of how to rea...

[8 replies] Last: // Generates a list of all +ve numbers < limit, prime = 0, non-prime... (by closed account 48T7M4Gy)

by bozmin

Calling a function from an outside file

I m trying to call a function from a *.cpp file that exist in an other *.cpp file, an using a *.h file, but it still does not work. this is my useContact.cpp ...

[3 replies] Last: main.cpp should have your main function, not useContact.cpp. Contact.... (by JayhawkZombie)

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General C++ Programming - September 2016 (Page 14)