vector understanding

[Douglas999]

This is abou vector

#include<vector>

void vect(std::vector<int>b, int i){
    b.remove(i);
}

void main(){
    std::vector<int> h; 
    vect(h,1);

    double x=0, y=0    ;
    h.push_back(x);
    h.push_back(y);
    return 0;
} 

But it gave me a lot of error I don't understand . This is part of a a smell project at school.
If u give more more advice, i promise you i will be back to say more thanks.

Thanks for your inputs, you are helpfull, very full.
Douglas999

[Philip Nicoletti]

1) You need to pass the vector by reference, not by value.

2) I assume you are gtrying to remove the i-th element from the
vector. The member function is called erase(), not remove(). Also
it takes an iterator, not an index.

void vect(std::vector<int> & b, int i){ 
//assumes that there are at least (i+1) elements in the vector
    b.erase(b.begin()+i); 
}

[Code_Nerd]

std::vector<int> h;
    vect(h,1);

    double x=0, y=0    ;
    h.push_back(x);
    h.push_back(y);

You are also trying to push doubles onto a int vector..

[SuperKoko]

void main(){

The correct function prototype is int main.

std::vector<int> h;
vect(h,1);

What is it supposed to do?
Remove the second (vector begin at 0) element of an empty vector.

Perhaps, you should move that operation after the second push_back method call.

#include <vector>

void vect(std::vector<int> b, std::vector<int>::size_type i){ // std::vector<int>::size_type is an unsigned integer whose size is adequate for vector indexing
   b.erase(b.begin()+i);
}

int main(){
    std::vector<int> h;

    int x=0, y=0    ;
    h.push_back(x);
    h.push_back(y);
    vect(h,1); // this operation and the previous mutually anihilate themselves.
    return 0;
}