Beginners - C++ Forum - February 2019 (Page 12)

call of overloaded function is ambiguous.

Hi, All I tried to run the following code on my gcc but encountered an error saying. " 38:9: error: call of overloaded ‘swap(int&, int&)’ is ambiguous ...

[2 replies] Last: Thanks Peter87 !! (by subhransu)

by vysero

|= and ? operations

I have a line of code here and I am trying to determine how the variable value is being calculated: value |= gpio_get_value(IOMUX_TO_GPIO(MX51_PIN_EIM_...

[9 replies] Last: The ! will convert 0 to 1 and any non-zero to 0. (by dutch)

by Stewie swag

string::npos

Hi so i have homework and its to clarify what the code means and what it does. if (numerals.find(romersk_nummer, 5) != std::string::npos)

[13 replies] Last: since we drug you down a long and winding road here, Ill just tell you... (by jonnin)

by Angela1998

Virtual Destructors

Hello! I have a question regarding virtual destructors. When we inherit from a base class with a public access specifier, all public and protected fields and me...

[17 replies] Last: Alright, thank you all for the discussion :) (by Angela1998)

by Alb13G

if/else 'Y' response restaraunt program

When I enter a response OTHER than 'y', 'Y' or "yes" it doesn't go to the ELSE statement can anyone see why ? Id appreciate a response Thanks ! //Albert Gr...

[2 replies] Last: That's it ! Thanks so much nicholasjb1996 I just read that in the book... (by Alb13G)

by trjk

nan problem

hello beautiful people first thanks for your time second i know this code is a huge mess but the idea behind it is: the program generate a random x and y loc...

[2 replies] Last: hey salem thank you so much for all the information and am very sorry ... (by trjk)

by closed account 1vf9z8AR

Segemented sieve is useless!!!!

My brute force solution is working faster than the segmented sieve method for finding prime numbers in ranges which can be from 1 to 10^9!!!!. It's not only ...

[5 replies] Last: It depends on what you are trying to do. If you are just trying to fin... (by dutch)

by Chris26

String and Array

Hello guys, i am desperate how to fix this code. For example i have the string option; and then i want to use the string for numbers for an array for e...

[4 replies] Last: you can convert a string to an integer with std::stoi(stringvar) so it... (by jonnin)

by aaronvan

Compile-time error dereferencing Map iterator

This is throwing a compile-time error: 'class string' has no member named 'first' (or 'second') for every instance of dereferencing the iterator. Below is a fra...

[10 replies] Last: Stanford's documentation is terrible; however, looking at the source c... (by aaronvan)

by Caddyshack3000

Passing a "string array" into a function

Hey, im doing a project for class and I have to convert a user entered number into roman numerals. I have 3 criteria to meet 1. read the conversion data from ...

[4 replies] Last: Dude thank you so much! Appreciate the help (by Caddyshack3000)

by cash

passing array of structure through function

I'm supposed to write a function that finds the maximum distance between two points created by an array. I'm confused about how to make a function that can pass...

[3 replies] Last: A minor improvement to Ganado 's excellent suggestion. To avoid check... (by dhayden)

by bbsmiley

Insert an element

Hi all, Here's the functions I have void FixedVector<T>::push_back(const T& value) { insert( size_, value ); // delegate to insert() leveraging er...

[3 replies] Last: Line 2: insert( size_ , value ); Lines 11&12: if (beforeIndex ... (by dhayden)

by imthekingbabyz

c++ checkout

...

[4 replies] Last: Hello imthekingbabyz, You could also do jonnin's suggestion as: if (... (by Handy Andy)

by Alb13G

if/else if

how can I ask the windy question should I change the structure or can I use more expressions in the if statement Can I get some help please the program asks ....

[6 replies] Last: I think Nicholasjb1996 is right: whether it's windy or not actually ... (by dhayden)

by jasper hall

series calculation

Hello. why this code do not work correctly? #include <iostream> using namespace std; int main() { int N=10; int n; float S1; float S...

[6 replies] Last: It's not so much that S1 and S2 are floats ... it's that n is an int. (by lastchance)

by Monzaku

Sorting a vector of nodes based on a struct attribute

OK so I've heard of sorting structs and I've heard of sorting objects based on attributes, but could someone explain how I would sort objects based on a struct ...

[1 reply] : http://www.cplusplus.com/reference/algorithm/sort/ std::sort( nodeve... (by keskiverto)

by ShadDow9

expected initializer before "std"

#include <iostream> int main() { int n,a,b,c,s std::cout<<"n="; std::cin>>n; a=n/100; b=n/10%10; c=n%10; s=a+b+c; std::cout<<"The...

[2 replies] Last: int n,a,b,c,s has no semi-colon. PLEASE learn to use code tags, it ... (by closed account E0p9LyTq)

by veysel

Data Structure

Hello Struct and Union are data structure in C/C++ as i know. Here my quesiton is that Class a data structure in C++ ?

[14 replies] Last: I see, sorry about that. (by jonnin)

by MikelLiew

binary '<<': no operator found

Hi, I am getting this error binary '<<' no operator found which takes a right-hand operand of type 'Point2D' (or there is no acceptable conversion) Having do...

[3 replies] Last: It not wrong to put the definition in the header, but your code will... (by helios)

by odo

this simple code giving error ?

it's giring error, sorry for rules #include<stdio.h> #include<stdlib.h> #include<math.h> int main(){ int a= rand(); int s=1;int i;int r; whi...

[2 replies] Last: thnks, i read every c is c++ so if you can show me c helping forum? i ... (by odo)

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Beginners - February 2019 (Page 12)