Menu
I know in C++11 they added the feature to initialize a variable to zero as such
double number = {}; // number = 0
int data{}; // data = 0
Is there a similar way to initialize a std::vector of a fixed length to all zero's?
864
A vector can be initialized with all zeros in three principal ways: A) use the initializer_list, B) use the assign() vector member function to an empty vector (or push_back()), or C) use int or float as the template parameter specialization for a vector of initially only default values.
You can use: std::vector<int> v(100); // 100 is the number of elements. // The elements are initialized with zero values.
1) std::vector is a sequence container that encapsulates dynamic size arrays. 2) std::pmr::vector is an alias template that uses a polymorphic allocator. The elements are stored contiguously, which means that elements can be accessed not only through iterators, but also using offsets to regular pointers to elements.
Begin Declare v of vector type. Call push_back() function to insert values into vector v.
You don't need initialization lists for that:
std::vector<int> vector1(length, 0);
std::vector<double> vector2(length, 0.0);
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With
