c++ vector first element

C++ Vector First Element

To access the first element of a vector in C++, you can use the following code:

std::vector<int> vec = {8, 4, 0};
int firstElement = vec[0];

1. Create a Vector: First, create a vector with the elements you want to access. In this case, the vector contains the elements 8, 4, and 0.

2. Access the First Element: Use the index operator [] to access the first element of the vector. In C++, vectors are zero-indexed, so the first element is at index 0.

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