matsu7874 https://blog.hatena.ne.jp/matsu7874/ matsu7874のブログ https://matsu7874.hatenablog.com/ C++ C++11だとstd::vectorの初期化は一行で書ける。 std::vector<int> 変数名(要素数, 何で埋めるのか); #include <iostream> #include <vector> int main(){ int k = 3; int count = 0; std::vector<std::vector<int>> vv(k, std::vector<int>(k, 1)); for(auto v: vv){ for(auto t: v){ count += t; std::cout << count << std::endl; } } return 0; } 1 … 190 <iframe src="https://hatenablog-parts.com/embed?url=https%3A%2F%2Fmatsu7874.hatenablog.com%2Fentry%2F2015%2F06%2F26%2F073646" title="多次元std::vectorの初期化(C++11) - matsu7874のブログ" class="embed-card embed-blogcard" scrolling="no" frameborder="0" style="display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;"></iframe> Hatena Blog https://hatena.blog 2015-06-26 07:36:46 rich https://matsu7874.hatenablog.com/entry/2015/06/26/073646 1.0 100%