Using an iterator to print out every member of a set

Question

I'm trying to use an iterator to print out every member of a set. As far as I can tell from other stackoverflow answers, I have the correct formatting. When I run this code, it correctly outputs that the size of myset is 3, but it only outputs ii once. If I uncomment the line with *iter, Visual Studio throws a runtime exception saying that that "map/set iterator is not dereferencable. Any idea why? ``` int main() { set myset; myset.insert(5); myset.insert(6); myset.insert(7); set::iterator iter; cout<

Accepted Answer

You have an extra `;` in this line:

```
for(iter=myset.begin(); iter!=myset.end();++iter);{
```

This means that the loop's body is actually empty, and the following lines are executed once only.

So change that line to this:

```
for(iter=myset.begin(); iter!=myset.end();++iter) {
```

Using an iterator to print out every member of a set

Solution

Problem