General C++ Programming - C++ Forum

Problem with writing into file (fstream)

Hi! I have a FOR LOOP for writing an index file. My index file depend the word that i receive in parameters and I make calculations to place my word in the i...

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by waqarmalek

helpp ASAP function and array

i need to write a function that uses a file to fill up an 2 arrays string and double that is in main. im lost help please thanks

[2 replies] Last: i do kinda know how to use arrays, im looking at tutorial right now. ... (by waqarmalek)

by worker23

Error allocating memory

Hey, first of all, i am writing my Code in C not, C++. I hope you could help me though. As the title says i've got an Problem after allocating memory for an ar...

[3 replies] Last: Do you call it before trying to access pressureentries? (by Peter87)

by ComputerJJ

Please Help!! Arrays

Can anyone explain how to write this program? A group of 50 people have gone apple picking at Shayde Brook Farms in Pennsylvania. Each person has collect...

[1 reply] : help with what ? (by SamuelAdams)

by ddz

Problem with "if" in the code

Hello Guys, I am new to programming so I don't know what is wrong in if / else if statements. No matter what it displays else statement. Help will be app...

[3 replies] Last: Thanks @Chervil. I am new so I didn't knew about that. Now I figured I... (by ddz)

by Jonjonscove

My code for line[34] how to make it grab the data

I'm grabbing data from an html file and I need only the 34th character or above to 4 spaces only on certain lines that have the html that have *racelinesb" but ...

[1 reply] : How to use code tags http://www.cplusplus.com/articles/jEywvCM9/ (by SamuelAdams)

by drporto

Friend and const doubts

#include <iostream> using namespace std; class Comp{ private: float r, i; public: Comp(): r(0),i(0){} Comp(float tempReal, float tempImg): r(tem...

[3 replies] Last: Thank you both, gunnerfunner und cire. I manage to make it the way i w... (by drporto)

by domcho

Problem with istream_iterator

I am trying to read an object from a file. It's a student who has a name, number of grades and grades. The problem is when I use istream_iterator method my func...

[2 replies] Last: Works perfectly! Thank you very much! (by domcho)

by lFoxiel

Standard input/output help C language

Assume that word is an array of chars containing a string . Write a statement to display the message "Today's Word-Of-The-Day is: " followed by the value ...

[1 reply] : Try this: printf("Today's Word-Of-The-Day is: %s" , word); ... (by Thomas1965)

by jessicamaria

my poor lottery checker program

#include<iostream> #include<string> #include<cstdlib> #include<time.h> using namespace std; //function prototypes void genwinNumbers(int ); void displayNumbe...

[1 reply] : This is only a warning and isn't a problem. You have a problem with ... (by coder777)

by closed account iyv9E3v7

My menu isn't very intuitive.

My menu isnt very intuitive. How can I make it a case-switch menu instead? Also, I would like for the program to eventually display results when the user choose...

[1 reply] : Please, use code tags for readability. [ . code . ] Code here... [ ... (by boost lexical cast)

by Jonjonscove

Solved it, got the data i needed for line[34].simple code

using namespace std; int main () { ifstream infile; infile.open("page.out"); string line; string sub; string sub2; string number; int cou...

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by ryaaren

Help trying to get Player to interact with Monster

Hey everyone, I've been trying to create my roguelike type of game for C++ using the ncurses library. After following many different tutorials, I have ended mys...

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by Jonjonscove

Why wont a substring method work in a while loop

I was using getline(infile,line) for an out file that I had, and I tried to use line.substr(5,5); all of this was in a while loop. And the substring method thro...

[2 replies] Last: Good ideal, maybe some of the lines only had a few characters but some... (by Jonjonscove)

by Jonjonscove

Why does the get line method take more than one line sometimes

I'm using the get line method for an infile file. Getmethod(infile,line). When I print the results of the line in a while loop. Some lines only have a couple o...

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by Kevin10official

input Max and Min in array

I can't seem to figure out a way to implement a max and minimum to an array. where it will only output numbers between the max and min. any help will be highly ...

[7 replies] Last: // Project8.cpp : Defines the entry point for the console application.... (by Kevin10official)

by J4999

Counting occurences of value in an array, and duplicates

Hello. I have to find the occurences of every element in an array, but I don't know how to get rid of duplicates. Example: #include "stdafx.h" #includ...

[2 replies] Last: a dynamic two-column table ...better known as "map"? std::map<int, ... (by Cubbi)

by NotJoHam

Reading in a binary relation

I'm trying to read in a binary relation from a user that comes in the format of {(1,2),(1,4),(2,3),(2,5)} I can't figure out how to only grab the integer value...

[no replies]

by andyramone

Passing function as argument to an other function

What is the right and most up-to-date way of passing a class member function to an other function as an argument? Suppose, I have a function with this signature...

[3 replies] Last: Sure... bind() itself provides partial application. Without gettin... (by mbozzi)

by samdenial

Card game

Hello, I need some assistance with my program. I have not started it. I am a little confuse Input: there will be 5 lines of input. Each line will contain the...

[1 reply] : Hello, I'm sorry if I'm wrong of your intentions, but may I remind you... (by pigeonfizz)

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General C++ Programming - November 2016