WebNov 11, 2012 · I want to populate some values of the vector, on the basis of a set of indexes in v1 and another vector v2 that actually has the values in sequence. So … WebSep 13, 2010 · create a class declaration with only a constructor, wherein you push_back a value (or multiple values) into the global/static vector. Then create a static instance of that class -> the constructor will get called before main, and the static vector will be populated.

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WebFeb 13, 2024 · If you want to reinitialize the std::vector, these are the following options: use std::fill like this std::fill (v.begin (), v.end (), true); use std::vector::resize like this v.resize (10, true); if the std::vector is already initialized use std::vector::assign like this v.assign (10, true); Share Improve this answer Follow WebFeb 16, 2024 · The following are different ways to create and initialize a vector in C++ STL 1. Initializing by pushing values one by one : CPP #include #include using namespace std; int main () { vector vect; vect.push_back (10); vect.push_back (20); vect.push_back (30); for (int x : vect) cout << x << " "; return 0; } Output 10 20 30 2. ron philo

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WebThe range filled is [first,last), which contains all the elements between first and last, including the element pointed by first but not the element pointed by last. val. Value to … WebMay 21, 2024 · fill () function is a library function of algorithm header, it is used to assign a value to the all elements within a given range of a container, it accepts iterators pointing to the starting and ending position in the container and a value to be assigned to the elements within the given range, and assigns the value. WebParameters. first. Output iterators to the initial position in a sequence of at least n elements that support being assigned a value of type T. n. Number of elements to fill. C++98. … ron pillsbury