#include "llvm/ADT/SmallVector.h" int main() { // Create a new SmallVector and add some elements llvm::SmallVectorIn this example, we create a SmallVector of integers with a maximum size of 3, and add some elements to it. We then use the "begin" method to get an iterator to the first element of the array, and print out its value. We also modify the first element and print out the new value. The package library for SmallVector is LLVM, which is a collection of modular and reusable compiler and toolchain technologies.vec = {1, 2, 3}; // Use begin() to get an iterator to the first element auto first = vec.begin(); // Print out the value of the first element std::cout << "The first element is: " << *first << std::endl; // Modify the first element *first = 4; // Print out the value of the first element after modification std::cout << "After modification, the first element is: " << *first << std::endl; }