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Beginners - February 2016 (Page 41)

putting stuff in map in global scope

Hi, I cant really understand what this error message means when I'm doing this : #include <map> #include <string> std::map<std::string, int> mp; mp["tr...

[2 replies] Last: Thank you very much man! (by etrusks)

by cbar

type casting/type conversion not working

Hey guys, have to write a beginner's program( I realize there are more efficient ways to perform some things, but have to keep it simple for this assignment). ...

[1 reply] : By default it only shows decimals if it affects the value. If all deci... (by Peter87)

by Ansev

vector <bitset <6> > to stringstream

G'day I'm trying to write an AIS decoder (NMEA 0183) as a project while i learn C++ and have become stuck trying to get a vector containing binary to a strings...

[4 replies] Last: Took me a few minutes to realise that the error getting thrown was bec... (by Ansev)

by XaVier35

Help Needed!: Classes/Methods

Hey guys. So I am currently learning C++ from a book called "SAMS Teach Yourself C++ in 24 Hours!" and I was following some instructions on classes and methods....

[2 replies] Last: "SAMS Teach Yourself C++ in 24 Hours!" I havent heard of this book, ... (by TarikNeaj)

by arunrd2015

how we can find the output on copy

i want to find the output of this code on copy but while i am doing i am unable to find and also i am using watch function but for this code that is also not wo...

[5 replies] Last: Thanks (by arunrd2015)

by kidd2100

Help to my first program

Forgive me as I am currently in the process of learning programming. This is my 3rd day studying and I designed a simple program. It prompts a individual to gro...

[10 replies] Last: I was worried on using double variables due to working with money. ... (by TheIdeasMan)

by Maxi Samson

How to input a file when I do not know the name

I know how to read in text files when I know the name ("input.txt", etc.) and in the past when I did not know the name I would prompt the user to input it. But ...

[4 replies] Last: TarikNeaj + 1 Ask your teacher for clarification. A good way to put ... (by Duthomhas)

by skhjr

text alignment

can someone tell me how i can fix my text alignment for test scores and grade? i want them in a column, but they are all out of line. This is how my output te...

[3 replies] Last: Everything you print must have a specified width. You are not printing... (by Duthomhas)

by ieesab

use of while loop

i am very beginner in c++ and trying to do exercises, here i used while loop, my code is working but i want to know can it be written in a better way. ...

[4 replies] Last: Thanks for your precious suggestions and valuable help. (by ieesab)

by Volvoid

const char

I'm trying to make a whitelist sort of thing, just a very simple one with cin and stuff. However, to check if the people are on the whitelist I do this: ...

[4 replies] Last: ^ /s/vector<const char*>/vector<string>/ (by Duthomhas)

by moonman239

How do I detect the reason for an stream fail state?

I'm taking Intro to Programming. Today we learned about using fstream to read/write to the filesystem. The teacher mentioned "fail states", saying they can happ...

[2 replies] Last: Stream failure can happen for a lot of reasons, but C++ isn't interest... (by Duthomhas)

by animus

C++ Function call isn't recognized? (Array to Stack implementation)

Hey, so I seem to need a lot of help when it comes to C++. The purpose of this homework is to create a 1-dimensional array implementation for a Stack. First it ...

[18 replies] Last: ¿why do you have so much whitespace? int *array; //these should c... (by ne555)

by jibicax

Erasing a string array

I'm reversing C-string inputs, which I got working fine. My problem is when I try to apply the code to a while loop to enter new inputs. The new inputs keep add...

[5 replies] Last: Thanks!! (by jibicax)

by JoshuaStudent

I need a while loop that calculates the min, max and average of n numbers.

Write your question here. Basically the user is told "Enter N" Then my program will allow the user to enter the following N integers, one at a time. After the ...

[2 replies] Last: Here is your while loop and a little more: #include <iostream> #incl... (by Thomas1965)

by jamesfarrow

Vector/Array question

Hi! I have a question about vectors. I am lead to believe that vectors can be resized/added to etc 'on the fly' What I mean is when you use an array you have t...

[7 replies] Last: Although the std::array<> doesn't have a fill constructor you can stil... (by jlb)

by kmce

Learning headers and .cpp

This question might be slightly difficult to explain but i will try my best. I am learning to place different parts of code into header files and .cpp files. I ...

[11 replies] Last: Look at it from the compilers point of view: When you call the attack(... (by edge6768)

by Jensdvvgsr

how to access var of another .cpp file

I want to create a few big arrays filled with variables, to make sure, that my main.cpp file is easy to overview I want to create/define/declare these variables...

[5 replies] Last: Is it also possible to initial a 2 dimensional vector Yes. and acc... (by jlb)

by mcanepa6787

First project

Hello, I am currently working on my first project which has us code a formula to predict the amount of money a person will save by investing in a retirement acc...

[3 replies] Last: Heres the code. Most of the values I rely on the user input but the te... (by mcanepa6787)

by skhjr

How to make an output file / text alignment

Can someone tell me how to output data to a output text file? I know I am missing the outfile << whatever << statement but I cannot figure out how to get outfil...

[3 replies] Last: but my professor wanted us to make the file variables global. That... (by Thomas1965)

by wilk3sy

structure help

Hello all Could anyone tell me what the ": 1" is doing in this instance? I haven't managed to find it anywhere on here so far. Thanks struct st...

[1 reply] : ignore this. I have found something. my understanding if I have mu... (by wilk3sy)

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