vector initialisation

vector_init.cpp

#include <vector>
#include <iostream>

int main(int argc, char * argv[]) {
    //check for the correct args
    if(argc != 3) {
        std::cerr << "error: invalid args" << std::endl;
        return EXIT_FAILURE;
    }
    //extract widht and height from the args
    //std::stoi reads in a integer from a string
    std::size_t width = std::stoi(argv[1]);
    std::size_t height = std::stoi(argv[2]);
    //create the 2d vector
    std::vector <std::vector<std::size_t>> myvec;
    //resize the vector to the right height based on the arg
    myvec.resize(height);
    //initialise the vector
    for(std::size_t count = 0; count < height; ++count){
        //resize each row
        myvec[count].resize(width);
        for(std::size_t inner = 0 ; inner < width; ++inner){
            //initialise the values
            myvec[count][inner] = inner;
        }
    }
    for (std::size_t outer = 0; outer < myvec.size(); ++outer){
        for(std::size_t inner = 0; inner < myvec[outer].size(); ++inner) {
            std::cout << myvec[outer][inner] << ", ";
        }
        std::cout << "\n";
    }
    return EXIT_SUCCESS;

}