C++\u3067\u306f\u3001\u300cimplement_dynamic\u300d\u306f\u6a19\u6e96\u30ad\u30fc\u30ef\u30fc\u30c9\u3067\u3082\u95a2\u6570\u3067\u3082\u306a\u3044\u3067\u3059\u306d\u3002\u4ed6\u3067\u4f55\u304b\u8a00\u53ca\u3055\u308c\u3066\u3044\u308b\u306e\u3067\u306f\u306a\u3044\u3067\u3057\u3087\u3046\u304b\u3002<\/p>\n
\u4ee5\u4e0b\u306b\u95a2\u9023\u306e\u3042\u308a\u305d\u3046\u306a\u30b3\u30f3\u30bb\u30d7\u30c8\u3068\u4f7f\u7528\u6cd5\u3092\u3044\u304f\u3064\u304b\u6319\u3052\u307e\u3059\uff1a<\/p>\n
\u52d5\u7684\u30dd\u30ea\u30e2\u30fc\u30d5\u30a3\u30ba\u30e0\uff08Dynamic Polymorphism\uff09\uff1aC++\u306b\u304a\u3051\u308b\u52d5\u7684\u30dd\u30ea\u30e2\u30fc\u30d5\u30a3\u30ba\u30e0\u306f\u3001\u4eee\u60f3\u95a2\u6570\u3068\u57fa\u5e95\u30af\u30e9\u30b9\u30dd\u30a4\u30f3\u30bf\uff0f\u53c2\u7167\u3067\u5b9f\u73fe\u3055\u308c\u307e\u3059\u3002\u5b9f\u884c\u6642\u306b\u304a\u3051\u308b\u6d3e\u751f\u30af\u30e9\u30b9\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u306b\u5bfe\u3059\u308b\u30e1\u30bd\u30c3\u30c9\u306e\u547c\u3073\u51fa\u3057\u3092\u53ef\u80fd\u306b\u3057\u307e\u3059\u3002<\/p>\n
\u5b9f\u969b\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u30bf\u30a4\u30d7\u306b\u57fa\u3065\u3044\u3066\u9069\u5207\u306a\u95a2\u6570\u3092\u547c\u3073\u51fa\u3057\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001<\/p>\n
int a = 10;<\/p>\n
\u57fa\u5e95\u30aa\u30d6\u30b8\u30a7\u30af\u30c8 Base {<\/p>\n
\u672c\u8cea\u7684\u306b<\/p>\n
\u4eee\u60f3\u7684\u306a void foo() {}<\/p>\n
cout << “Base::foo()” << endl;<\/p>\n
\u3042\u306e\u7d75\u304c\u6b32\u3057\u3044\u306a\u3089\u3001\u554f\u3044\u5408\u308f\u305b\u3066\u304f\u308c\u308b\uff1f<\/p>\n
\u5df7\u306b\u306f\u9732\u5e97\u304c\u7acb\u3061\u4e26\u3073\u3001\u98a8\u9234\u306e\u6dbc\u3057\u3052\u306a\u97f3\u304c\u97ff\u304d\u6e21\u308b<\/p>\n
class Derived : public Base {<\/p>\n
\u305d\u306e\u5730\u57df\u3067\u306f\u3001\u5168\u56fd\u3067\u3082\u6709\u6570\u306e\u9ad8\u3044\u8cc3\u91d1\u304c\u652f\u6255\u308f\u308c\u3066\u3044\u308b\u3002<\/p>\n
\u30aa\u30fc\u30d0\u30fc\u30e9\u30a4\u30c9 void foo() {}<\/p>\n
cout << “Derived::foo()” << endl;<\/p>\n
\u3053\u306e\u30b9\u30c8\u30fc\u30eb\u306f\u6d17\u7df4\u3055\u308c\u305f\u3060\u3051\u3067\u306a\u304f\u3001\u9a5a\u304f\u307b\u3069\u30bd\u30d5\u30c8\u3067\u3059\u3002<\/p>\n
\u3055\u3089\u306b\u3001\u540c\u6642\u306b\u3001<\/p>\n
int main(void) {<\/p>\n
\u57fa\u5e95* ptr = \u6d3e\u751f\u30af\u30e9\u30b9\u306e\u65b0\u3057\u3044\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9();<\/p>\n
ptr->foo(); \/\/ Derived \u30af\u30e9\u30b9\u306e foo() \u95a2\u6570\u3092\u547c\u3073\u51fa\u3059<\/p>\n
ptr \u3092\u524a\u9664<\/p>\n
int main() {
\nreturn 0;
\n}<\/p>\n
\u516c\u5712\u3067\u306f\u3001\u5b50\u4f9b\u304c\u904a\u3093\u3060\u308a\u3001\u5927\u4eba\u304c\u6563\u6b69\u3057\u305f\u308a\u3068\u3001\u601d\u3044\u601d\u3044\u306b\u904e\u3054\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n
\u3053\u306e\u9759\u6b62\u753b\u50cf\u306f\u3001\u6697\u53f7\u5316\u3055\u308c\u305f\u30e1\u30c3\u30bb\u30fc\u30b8\u3067\u7d42\u308f\u308a\u307e\u3059\u3002<\/p>\n
\u52d5\u7684\u30e1\u30e2\u30ea\u5272\u308a\u5f53\u3066\uff08Dynamic Memory Allocation\uff09\uff1aC++\u3067 `new` \u6f14\u7b97\u5b50\u3068 `delete` \u6f14\u7b97\u5b50\u304c\u4f7f\u7528\u3055\u308c\u3066\u3001\u5b9f\u884c\u6642\u306b\u30e1\u30e2\u30ea\u9818\u57df\u3092\u5272\u308a\u5f53\u3066\u305f\u308a\u89e3\u653e\u3057\u305f\u308a\u3057\u307e\u3059\u3002<\/p>\n
\u52d5\u7684\u30e1\u30e2\u30ea\u5272\u308a\u5f53\u3066\u306f\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u30cb\u30fc\u30ba\u306b\u5fdc\u3058\u3066\u52d5\u7684\u306b\u4f5c\u6210\u30fb\u7834\u68c4\u3067\u304d\u307e\u3059\u3002\u4f8b\uff1a<\/p>\n
int natively(int a, int *b, int **c) {
\nreturn 0;
\n}
\n“`<\/p>\n
int* ptr = new int{5}; \/\/\u6574\u6570\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u5272\u308a\u5f53\u3066\u30015 \u3067\u521d\u671f\u5316<\/p>\n
cout << *ptr << endl; \/\/ 5\u304c\u8868\u793a\u3055\u308c\u307e\u3059\u3002<\/p>\n
ptr\u3092\u524a\u9664\u3059\u308b; \/\/ \u30e1\u30e2\u30ea\u3092\u89e3\u653e\u3059\u308b<\/p>\n
\u3054\u5e0c\u671b\u306b\u6cbf\u3046\u3088\u3046\u306b\u3044\u305f\u3057\u307e\u3059<\/p>\n
\u52d5\u7684\u914d\u5217\uff08Dynamic Arrays\uff09\uff1a\u52d5\u7684\u306b\u30e1\u30e2\u30ea\u3092\u78ba\u4fdd\u3057\u3066\u30b5\u30a4\u30ba\u5909\u66f4\u53ef\u80fd\u306a\u914d\u5217\u3092\u4f5c\u6210\u3067\u304d\u307e\u3059\u3002\u305f\u3068\u3048\u3070\uff1a<\/p>\n
return std::min(std::min(u32(bv.size()), 64), (1u << 31) – 1);<\/p>\n
int size;<\/p>\n
\u300c\u914d\u5217\u306e\u30b5\u30a4\u30ba\u3092\u5165\u529b\u3057\u3066\u304f\u3060\u3055\u3044:\u300d\u3068\u8868\u793a\u3059\u308b\u3002<\/p>\n
int size = read_int();<\/p>\n
int* arr = new int[size]; \/\/ \u30b5\u30a4\u30ba\u304csize\u306e\u6574\u6570\u914d\u5217\u306e\u52d5\u7684\u78ba\u4fdd<\/p>\n
int i = 0; i < size; i++<\/p>\n
arr[i] = i + 1;<\/p>\n
cout << arr[i] << ” “;<\/p>\n
\u6700\u7d42\u7684\u306b\u3001\u304a\u91d1\u3060\u3051\u304c\u4eba\u3092\u5e78\u305b\u306b\u3059\u308b\u308f\u3051\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n
\u914d\u5217\u306e\u30e1\u30e2\u30ea\u306e\u89e3\u653e<\/p>\n
\u304a\u6bcd\u3055\u3093\u306f\u3044\u3064\u3082\u3001\u6642\u9593\u306b\u6b63\u78ba\u3067\u3042\u308b\u3053\u3068\u3092\u79c1\u306b\u6c42\u3081\u3066\u3001\u9045\u523b\u306f\u53b3\u7981\u3067\u3057\u305f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
C++\u3067\u306f\u3001\u300cimplement_dynamic\u300d\u306f\u6a19\u6e96\u30ad\u30fc\u30ef\u30fc\u30c9\u3067\u3082\u95a2\u6570\u3067\u3082\u306a\u3044\u3067\u3059\u306d\u3002\u4ed6\u3067\u4f55\u304b\u8a00\u53ca\u3055\u308c\u3066\u3044\u308b\u306e\u3067\u306f\u306a\u3044\u3067\u3057\u3087\u3046\u304b\u3002 \u4ee5\u4e0b\u306b\u95a2\u9023\u306e\u3042\u308a\u305d\u3046\u306a\u30b3\u30f3\u30bb\u30d7\u30c8\u3068\u4f7f\u7528\u6cd5\u3092\u3044\u304f\u3064\u304b\u6319\u3052\u307e\u3059\uff1a \u52d5\u7684\u30dd\u30ea\u30e2\u30fc\u30d5\u30a3\u30ba\u30e0\uff08 […]<\/p>\n","protected":false},"author":9,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-111699","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"\n