How to remove only one element from a vector with duplicates - c++

Question

I am making a D&D game in C++. I roll 6 scores randomly, put them in a vector, display them to the player. Then I go through each ability (str, dex, con, int, wis, and cha), and call a function that asks the player which of the scores they want to use for each ability, and then i remove it from the vector, return the value, and move on to the next ability. It works fine unless there is a duplicate roll, in which case it deletes both of the duplicates. I want it to only remove one at a time regardless of duplicates, and I haven't been able to find anything online to do this. Here is the function call
int Character::initScores(std::vector<int> & v, std::string ability)
{
int c = 0;
bool error = 0;
do {
if (c != 0) {
std::cout << "That isn't one of your scores. Try again. " <<
std::endl;
}
int choice;
std::cout << ability << ": ";
std::cin >> choice;
if (std::find(v.begin(), v.end(), choice) != v.end())
{
v.erase(std::remove(v.begin(), v.end(), choice), v.end());
std::cout << "Your remaining rolls are ";
for (int i = 0; i < v.size(); i++)
std::cout << v[i] << " ";
std::cout << std::endl;
return choice;
}
else
{
c++;
error = 1;
}
} while (error = 1);
}
And the function calls
std::cout << "Enter which score you want for... " << std::endl;
strength = initScores(scores, "Strength");
dexterity = initScores(scores, "Dexterity");
constitution = initScores(scores, "Constitution");
intelligence = initScores(scores, "Intelligence");
wisdom = initScores(scores, "Wisdom");
charisma = initScores(scores, "Charisma");
Also please lmk if there is anything inefficient/bad practice in my code, I have only recently started working on my own coding projects

Answer 1

You are calling std::remove(), which "removes" ALL matching values from the container (really, it just moves them to the end of the container), and then you are calling the 2-parameter overload of the erase() method to physically delete ALL of the "removed" values from the container.
If you just want to remove 1 element, pass the iterator returned by std::find() to the 1-parameter overload of the erase() method:
auto iter = std::find(v.begin(), v.end(), choice);
if (iter != v.end())
{
v.erase(iter);
...
}