General C++ Programming - C++ Forum

output stream creates the txt file but won't open

#include <iostream> #include <fstream> #include <cstdlib> #include <iomanip> #include <ctype.h> #include <cstdio> using namespace std; void name_organi...

[1 reply] : Could it help to actually write something to the stream? (by keskiverto)

by muthavhatsindi

creating a triangular matrix

i am struggling with producing the right output through this code which should take any normal matrix and convert it into an upper triangular matrix. here is m...

[9 replies] Last: oh i found my problem. the loop was taking the reference number from m... (by muthavhatsindi)

by saj1994

Undefined symbols for architecture x86_64: (1,2)

Im trying to build a Library Management System and I am getting this error: Undefined symbols for architecture x86_64:. Im not quite sure why I am getting this...

[20 replies] Last: I have something like this in the Book.cpp: while(file.read((char*)&b... (by saj1994)

by jae0014

Urgent Help

So if i don't have character and aphabet it suppose to add two number and send it to reason function but for some reason if i type 123 it won't print less char...

[1 reply] : kthxbye. Help with what?......................... Ask a specific ques... (by TarikNeaj)

by Lozy

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[1 reply] : You're passing the variable 'var' to the function "search_by_name_or_s... (by Computergeek01)

by saisr8

destructors

please explain the concept of destructors in c++ i particularly don't understand the word that it de-initializes memory

[2 replies] Last: A destructor only ever does exactly what you tell it to at the end of ... (by Computergeek01)

by csstudent123

get a token from a cstring

Hi. how can I use strtok to get a part of a string token get string of type string convert to cstring convert to tokens using strtok then how to get a to...

[3 replies] Last: yep. Click on the links you see and read, see if that helps. Also try ... (by TarikNeaj)

by zoran404

RAR archive. Password cracking.

I want to make a bruteforce rar password cracker, just for practice. I know that it's easy to google for programs that already do this, but I want to make one m...

[4 replies] Last: You'll have to find some documentation on rar archives and their compr... (by Disch)

by sofea

list

input : 3 4 5 5 0 output : 4: 3 4 5 5 #include<iostream> #include<list> #include<string> using namespace std; int main() { list<int> intList; l...

[1 reply] : This is your 5th post in the past hour. Stop Fucking spamming. If you ... (by TarikNeaj)

by jae0014

Need quick help on my reverse function

so out += s[I-1] is the problem but how can I make it reverse? #include <iostream> #include <string> using namespace std; void reverse(string s, int i); in...

[no replies]

by sofea

Stack (display integer that push onto stack with its size)

input : 2 //(number of case) 4 5 6 0 output : 3: 6 5 4 0 input : 1 2 3 0 output : 3: 3 2 1 0 #include <iostream> #include <stack> ...

[1 reply] : Please edit your post and use code tags - http://www.cplusplus.com/art... (by TarikNeaj)

by SiameseDots

Removing multiple spaces

Hello! I'm new to C++ and I am having some trouble programming a function that reads a sentence from a file such as: "Hello World! Today is Awesome!" (note ...

[1 reply] : see http://www.cplusplus.com/reference/sstream/istringstream/ (by sujitnag)

by sofea

Stack (postfix evaluator)

#include <iostream> #include <stack> #include <string.h> #include <stdlib.h> using namespace std; bool isOperator(char *); int evaluate(int, int, char...

[no replies]

by jackf

Need to Convert the files from .xls to .xlsx using c++ programming

Hi, Please help in code to convert .xls to .xlsx using c or c++ programming.

[1 reply] : See if you find anything useful here - http://www.cplusplus.com/forum/... (by TarikNeaj)

by cppnerd

user'll only be able to enter predetermined vals

<code> #include <iostream> using namespace std; int main { char A ="47000000000"; char B ="47000000000"; char C ="47000000000"; cout << "Enter 3 numbers to mu...

[12 replies] Last: thanxx @TheIdeasMan... (by shadder)

by Lauke

Polymorfism and Abstract class

Hi guys, i have a situation like this class Base {...}; //this is an abstract class with one pure virtual method class Derivate1 : public Base {...}; cl...

[15 replies] Last: @ JLBorges Thanks, I see now. Regards (by TheIdeasMan)

by jae0014

Need help on my coding...

Write a program to validate a password using the following rules: • The password must be at least six characters in length • It must contain at least one up...

[2 replies] Last: I get error num2 is used without being initialized and if you guys co... (by Gamer2015)

by programmercarlito

Circular Linked List (1,2)

Would anybody know why this isnt working? Only error I keep getting is LNK2019 void print(circularLinkedList &head){ if(head = NULL){ return; }; ...

[21 replies] Last: you could also make a do-while loop. also: please try to avoid that s... (by Gamer2015)

by awkedd

I don't know where to start

Hi, I im a 9th grade student and haven't been learning c++ for long . I have to make this program below, but i don't know how to write that condition ... Can ...

[5 replies] Last: I feel like calling this an algorithm is a bit too much :p Why dont yo... (by TarikNeaj)

by awkedd

Need faster algorithm

I need to create a program which verifies if n is a perfect number or not. I made this program, but for some reason when i submit it, i only get 90p / 100, say...

[6 replies] Last: Thank you , i figured it out with your help ! (by awkedd)

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General C++ Programming - April 2015 (Page 23)