fill vector with zeros c++

To fill a vector with zeros in C++, you can follow these steps:

  1. Declare a vector variable of the desired data type. For example, if you want to create a vector of integers, you can declare it as follows: cpp std::vector<int> myVector;

  2. Determine the size of the vector. You can either specify the size during declaration or resize the vector later. If you want to specify the size during declaration, you can do it like this: cpp std::vector<int> myVector(size);

  3. Use the std::fill function from the <algorithm> library to fill the vector with zeros. This function takes two iterators as arguments to specify the range of elements to be filled. In this case, you can pass the begin() and end() iterators of the vector to fill the entire vector. The syntax would be: cpp std::fill(myVector.begin(), myVector.end(), 0);

  4. After executing the above line of code, the vector will be filled with zeros.

Here's a complete example of filling a vector with zeros in C++:

#include <iostream>
#include <vector>
#include <algorithm>

int main() {
    std::vector<int> myVector(5); // Declare a vector of size 5

    std::fill(myVector.begin(), myVector.end(), 0); // Fill the vector with zeros

    // Print the vector elements
    for (const int& element : myVector) {
        std::cout << element << " ";
    }
    std::cout << std::endl;

    return 0;
}

When you run this code, it will output:

0 0 0 0 0

This indicates that the vector has been successfully filled with zeros.