General C++ Programming - C++ Forum

I have been programming c++ for around half a year. And im trying to write to another file with a bool. I cant figure out how to just output what I have written...

[5 replies] Last: Then use std::ofstream::app in the constructor on line 40. (by coder777)

by jcf5xh

write file into Fat16 file system?

How would you do it? I have a program here that reads a file from the fat16 into the folder the program is in. Is it parallel to this code? More involved? I...

[5 replies] Last: To clarify further, I basically want to implement the reverse of this ... (by jcf5xh)

by Wu zhen hai

operator== ambiguous

#include <utility> typedef std::pair<int, int> pii; bool operator==(const pii&, const pii&) { return true; } int main() { return 0; } // I can...

[2 replies] Last: Many Thanks! I think you are right! (by Wu zhen hai)

by NeoKratox

Which container can hold more information?

Hi, I'm working with subsets of integers and using a structure vector<vector<int>>, but as my number of intergers is 100 and then I have 1.267.650.600.228.230....

[2 replies] Last: Thanks Peter87, sorry for my stupid question, LoL! So, a limitation t... (by NeoKratox)

by Matep

Need help with the program which was on my last programming competition

Hi guys, need help with the idea on how to solve this assigment with an fast enough algorithm. There is a parkinlot with P spaces, parked one next to the oth...

[2 replies] Last: Ty @np555 I think i understand what you're saying, ill try to write it... (by Matep)

by Matep

Struct/Function

Hi guys, need help with a function, it should return a substring and position where '.' should be switched for a '#'. Can i make a struct function and make a s...

[3 replies] Last: Instead of creating your own type, you could use a standard types like... (by Peter87)

by Shreyanstar

Implement memory allocation functions malloc and free

I'm new to C++ and have no history of studying it in school. I'm doing my graduation in CS and have been given a project that titles the same as above. As far a...

[no replies]

by prince987

this is my project and i need to submit it .

my program does not printing the records of the inputs here's the code.hope someone will help #include<stdio.h> #include<string.h> #include<conio.h> #inc...

[1 reply] : You need to initialize int ch; You have some crazy memory things goi... (by ultifinitus)

by sam9293

factorial of 1000

please help me finding the factorial of 1000 using doubly linked list in c++

[9 replies] Last: thanks bro i have completed (by sam9293)

by XscegX

EXTREMELY NEW TO C++, help!

ok so I've got to make a program that converts centimeters to inches and then converts that amount of inches into the respective yards, feet and inches displaye...

[4 replies] Last: Good point, not sure why I went ahead and put the "12" on the end. I ... (by XscegX)

by alex067

Doubly Linked List show item HELP!

So in my program, I have created a grocery list with the main variables being the name of the item and the quantity. I have to create a recursive function th...

[5 replies] Last: Well your printBackward() function doesn't need to return a value sinc... (by dhayden)

by yj1214

A question about g++ -l

g++ -l I heard that this tells compiler the library name. What is it mean by library name? is it the file name? Also, this is not related to g++ but what...

[8 replies] Last: These days, every mainstream C++ compiler supports inter-procedural o... (by dhayden)

by MzDoll

Vectors and Algorithm

Hi guys, I am having problems with vectors. I am suppose to create a vector with 10 objects, which I have done, shuffle the vector and print it. Then I have to ...

[12 replies] Last: https://sourceforge.net/projects/pwwhashmap/files/?source=navbar this... (by pww71)

by katieChang1234

Sorting a vector of Indeces

Lets say I have a huge vector of objects called Log. A log contains a timestamp, a category and message. This vector cannot be changed. Searches are to be p...

[1 reply] : Create a functor that sorts on the proper criteria. For example: s... (by Duthomhas)

by chainey35

error LNK1561: entry point must be defined

error LNK1561: entry point must be defined - I have received this error after build solution on my program that I am trying to complete for my class on converti...

[2 replies] Last: Sorry, not quite understanding the *nix (by chainey35)

by yj1214

! operator

#include <iostream> bool checkSomething(){ return false; } int main(){ if(!checkSomething){ std::cout << "hello" << std::endl; ...

[4 replies] Last: In your original code, if(!checkSomething){ std::cout <<... (by Alrededor)

by TpkEnix

Template struct

completed

[3 replies] Last: So first you have to read in the first line which will determine how m... (by giblit)

by N495t4r

Runtime error in console

for example int num; std::cout<<"Please enter a number: "; std::cin>>num; when this code is compile and run, it asks the user to input a number, if mis...

[2 replies] Last: Yeah, the both worked. Thanks for your help @giblit (by N495t4r)

by TChapman500

Would Like Help Proofreading My Code

I have created a function that deals with an array of pointers and I would like some help proof-reading it. VS seems to accept the code but I want to make sure...

[11 replies] Last: instead of lines 9-14 you may simply do Objects = temp; or use std::... (by ne555)

by N495t4r

Approximation

int x =1.7 + 3; std::cout<<x; //this will print 4.7 as the value of x, how do I make the program print 5 as the approximate value of x?

[2 replies] Last: Oh my bad.. double x =1.7 + 3; std::cout<<x; //this will print 4.7 ... (by N495t4r)

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General C++ Programming - March 2015 (Page 2)