Fill/Initialize vector with Objects in C++

Asked Oct 16 '18 at 19:03

Active Oct 16 '18 at 19:03

Viewed 19 times

so first of all here is my code:

#include "Data.h"
#include "Ant.h"

using namespace std;

#define NUMBERANTS 500

int main() {

init();

vector<Ant> antarmy;
antarmy.reserve(NUMBERANTS);
int currentAntNumber = 1;

fill(antarmy.begin(), antarmy.end(), Ant());

for each (Ant ant in antarmy) {
    ant.setNumber(currentAntNumber);
    currentAntNumber++;
    ant.antRoute(ant);
}


system("pause");
return 0;

}

I have a vector of objects (Ant) and I defined the size of the vector. Now I want to initiliaze it with the number of Objects. But

fill(antarmy.begin(), antarmy.end(), Ant());

doesnt work somehow. So what do I have to change?

Thanks for your help

asked Oct 16 '18 at 19:03

Samy Dressel

You reserved space but you never resized it, its size is still 0. – tkausl Oct 16 '18 at 19:04
1

`vector antarmy( number_of_ants );` – Oct 16 '18 at 19:05
Please learn the difference between [`reserve`](https://en.cppreference.com/w/cpp/container/vector/reserve) and [`resize`](https://en.cppreference.com/w/cpp/container/vector/resize). – Some programmer dude Oct 16 '18 at 19:05
`reserve` != `resize`. – SergeyA Oct 16 '18 at 19:05
Also `for each (Ant ant in antarmy)`? That's not valid C++. – Some programmer dude Oct 16 '18 at 19:06
My Programming Skills are just really bad sorry for that :/ – Samy Dressel Oct 16 '18 at 19:09
Doesn't look like the programming's bad. You just need to brush up on the syntax. – user4581301 Oct 16 '18 at 19:15

Fill/Initialize vector with Objects in C++

0 Answers0