Can I initialize an STL vector with 10 of the same integer in an initializer list? My attempts so far have failed me.
You can do that with std::vector
constructor:
vector(size_type count,
const T& value,
const Allocator& alloc = Allocator());
Which takes count
and value
to be repeated.
If you want to use initializer lists you can write:
const int x = 5;
std::vector<int> vec {x, x, x, x, x, x, x, x, x, x};
The initialization list for vector is supported from C++0x. If you compiled with C++98
int number_of_elements = 10;
int default_value = 1;
std::vector<int> vec(number_of_elements, default_value);
Use the appropriate constructor, which takes a size and a default value.
int number_of_elements = 10;
int default_value = 1;
std::vector<int> vec(number_of_elements, default_value);
I think you mean this:
struct test {
std::vector<int> v;
test(int value) : v( 100, value ) {}
};
If you're using C++11 and on GCC, you could do this:
vector<int> myVec () {[0 ... 99] = 1};
It's called ranged initialization and is a GCC-only extension.
can you post what you are doing
int i = 100;
vector<int> vInts2 (10, i);
vector<int>::iterator iter;
for(iter = vInts2.begin(); iter != vInts2.end(); ++iter)
{
cout << " i " << (*iter) << endl;
}