is the action of adding an element at the end of a container.
push-back is the action of adding an element at the end of a container.
Questions tagged [push-back]
420 questions
-3
votes
2 answers
Vector.push_back Issue
The following question concerns the use of a vector and memcpy. Vector functions being used are, .push_back, .data(), .size().
Information about the msg.
a)
#define BUFFERSIZE 8<<20
char* msg = new char[(BUFFERSIZE / 4)];
Question: Why doesn't code…
Jesper
- 11
- 1
-3
votes
2 answers
C++ Vector elements being replaced by last call to push_back
So I have this code in my main function
if(mesType == 1) {
cin.ignore();
Message mes1;
stack1.push(&mes1);
} else if(mesType == 2) {
cin.ignore();
MorseCodeMessage mes2;
stack1.push(&mes2);
}
and here…
Caleb lee
- 43
- 7
-3
votes
2 answers
how to use push_back in vector of a struct
hey guys i have created a struct node. one of its fields is a vector (path) where i want to store characters.however when i try to push_back a character the compiler says "error: ‘path’ was not declared in this scope"
#include
#include…
Βασιλική Νικολάου
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- 1
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-3
votes
1 answer
How to get push_back to work in C++ program
I'm working on a C++ assignment and having some issues with an error in regards to push_back. The error message reads:
No matching member function for call to 'push_back'.
The error occurs at the line that reads:…
John Smith
- 13
- 1
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-3
votes
1 answer
2d vector says class does not have member named push_back
ManageShips::ManageShips(vector< Spaceship - > itemShip,
vector< Spaceship
> personShip,
vector< Item > itemCargo,
vector< Person > personCargo){
m_itemShips =…
Nabil Hassan
- 43
- 2
- 6
-3
votes
3 answers
what the output is always zero even if i use push_back in stl c++?
push_back doesn't add the value of i to the vector n in the following code:
#include
#define _ ios::sync_with_stdio(0);cin.tie(0);
using namespace std;
/*macros*/
#define fi(i,a,b) for(int i=a;i
mr-woot
- 88
- 1
- 10
-3
votes
1 answer
vector::push_back ( A * ) creating leaks?
I'm trying to create a really simple virtual filesystem (represented as a tree)(for my FTP server) mapped to several places on my real one. Nodes are represented by a Node object which holds pointers to its contents in a vector.
I know that for…
Lea
- 211
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- 14
-3
votes
1 answer
Segmentation fault using Vector C++
I am trying to separate all the values stored in a vector into two different vectors. But when i am printing value of any of the vectors it is throwing seg fault.
Below is the code sample.
std::vector V,Vx,Vy;
for (int i = 0; i < k;…
sandyroddick
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- 4
- 16
-4
votes
3 answers
Why can't I use push_back function?
void Add(vector< vector > &name,
vector< vector > &author,
vector< vector > &pub,
int &total_books)
{
Line();
string book_name,book_author,book_pub;
cout << "Please enter the book name:…
KYUNGWAN RYOO
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-4
votes
1 answer
Vector push_back inserting 0s only
int main()
{
long int n;
long int k;
long int q;
long int o;
long int temp;
cin >> n >> k >> q;
vector a(n);
vector b(n);
for( int a_i = 0;a_i < n;a_i++){
cin >> a[a_i];
}
for(long…
S___V
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- 2
-4
votes
2 answers
How do I parse a line into pieces and ignore parts of it?
I am sorry. I wasn't clair previously. I have a file that include data in the following format
A(3)
B(4),A
C(2),A
E(5),A
G(3),A
J(8),B,H
H(7),C,E,G
I(6),G
F(5),H
...
These data represent a graph.
I will use the critical…
DrD4rk
- 57
- 1
- 11
-4
votes
1 answer
R-value Reference push_back Function
I'm writing a Queue class. I have two versions of push_back for the new C++11 standard. One of these versions uses a rvalue reference as a parameter. My version works, but I think it must be lacking something:
97 template
98 void…
Victor Brunell
- 5,668
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- 46
-4
votes
1 answer
How to use push back method for a C++ vector
int numFiles;
cout << "How many signal files are there?";
cin >> numFiles;
vector signalFiles(numFiles);
vector backgroundFiles(numFiles);
string backgroundFile;
for (int i=0;i
Channing
- 166
- 1
- 9
-5
votes
2 answers
C++ How to represent a string in binary format?
For some reason, I need to frequently generate strings use characters in {'0', '1', '2', '3'}. My current code use push_back() function and looks like:
string test = ""
test.push_back('0')
test.push_back('2')
test.push_back('3') // test would be…
user2566640
- 1
- 1
-9
votes
1 answer
Why can't I directly push_back update value from function in vector?
push_backing to a vector with function updated values doesn't permit why?
std::vector< std::string >goin;
goin.push_back(function(somestringvalue)); // why cant it take update value?
void function(std::string& var)
{
var += "pre";
}
rosti
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