{"id":60169,"date":"2024-10-13T00:37:16","date_gmt":"2024-10-12T16:37:16","guid":{"rendered":"https:\/\/server.hk\/cnblog\/60169\/"},"modified":"2024-10-13T00:37:16","modified_gmt":"2024-10-12T16:37:16","slug":"c%e8%aa%9e%e8%a8%80%e5%af%a6%e7%8f%be%e6%95%b8%e6%93%9a%e5%ba%ab%e9%bb%9e%e7%b9%aa%e8%a3%bd%e5%8a%9f%e8%83%bd-%e7%94%a8c%e5%b0%87%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%ad%e7%9a%84%e9%bb%9e%e7%95%ab","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/60169\/","title":{"rendered":"C\u8a9e\u8a00\u5be6\u73fe\u6578\u64da\u5eab\u9ede\u7e6a\u88fd\u529f\u80fd (\u7528c\u5c07\u6578\u64da\u5eab\u4e2d\u7684\u9ede\u756b\u51fa\u4f86)"},"content":{"rendered":"

C\u8a9e\u8a00\u5be6\u73fe\u6578\u64da\u5eab\u9ede\u7e6a\u88fd\u529f\u80fd<\/h1>\n

\u5728\u7576\u4eca\u6578\u64da\u9a45\u52d5\u7684\u4e16\u754c\u4e2d\uff0c\u5c07\u6578\u64da\u53ef\u8996\u5316\u662f\u7406\u89e3\u548c\u5206\u6790\u6578\u64da\u7684\u91cd\u8981\u6b65\u9a5f\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u4f7f\u7528C\u8a9e\u8a00\u5f9e\u6578\u64da\u5eab\u4e2d\u63d0\u53d6\u6578\u64da\u4e26\u5c07\u5176\u7e6a\u88fd\u70ba\u9ede\u5716\u3002\u9019\u4e00\u904e\u7a0b\u6d89\u53ca\u6578\u64da\u5eab\u7684\u9023\u63a5\u3001\u6578\u64da\u7684\u63d0\u53d6\u4ee5\u53ca\u5716\u5f62\u7684\u7e6a\u88fd\uff0c\u5c0d\u65bc\u958b\u767c\u8005\u4f86\u8aaa\u662f\u4e00\u500b\u975e\u5e38\u5be6\u7528\u7684\u6280\u80fd\u3002<\/p>\n

1. \u6578\u64da\u5eab\u9023\u63a5<\/h2>\n

\u9996\u5148\uff0c\u6211\u5011\u9700\u8981\u9023\u63a5\u5230\u6578\u64da\u5eab\u3002\u9019\u88e1\u4ee5MySQL\u70ba\u4f8b\uff0c\u4f7f\u7528MySQL C API\u4f86\u5be6\u73fe\u9023\u63a5\u3002\u4ee5\u4e0b\u662f\u9023\u63a5\u6578\u64da\u5eab\u7684\u57fa\u672c\u4ee3\u78bc\uff1a<\/p>\n

\n#include \n#include \n#include \n\nMYSQL *conn;\nMYSQL_RES *res;\nMYSQL_ROW row;\n\nvoid connect_db() {\n    conn = mysql_init(NULL);\n    if (conn == NULL) {\n        fprintf(stderr, \"mysql_init() failedn\");\n        exit(EXIT_FAILURE);\n    }\n\n    if (mysql_real_connect(conn, \"localhost\", \"user\", \"password\", \"database\", 0, NULL, 0) == NULL) {\n        fprintf(stderr, \"mysql_real_connect() failedn\");\n        mysql_close(conn);\n        exit(EXIT_FAILURE);\n    }\n}\n<\/code><\/pre>\n
\u5728\u9019\u6bb5\u4ee3\u78bc\u4e2d\uff0c\u6211\u5011\u521d\u59cb\u5316\u4e86MySQL\u9023\u63a5\uff0c\u4e26\u4f7f\u7528\u7528\u6236\u540d\u3001\u5bc6\u78bc\u548c\u6578\u64da\u5eab\u540d\u7a31\u9032\u884c\u9023\u63a5\u3002\u8acb\u6839\u64da\u5be6\u969b\u60c5\u6cc1\u66ff\u63db\u76f8\u61c9\u7684\u53c3\u6578\u3002<\/p>\n
2. \u6578\u64da\u63d0\u53d6<\/h2>\n
\u9023\u63a5\u6210\u529f\u5f8c\uff0c\u6211\u5011\u53ef\u4ee5\u5f9e\u6578\u64da\u5eab\u4e2d\u63d0\u53d6\u6578\u64da\u3002\u4ee5\u4e0b\u662f\u67e5\u8a62\u6578\u64da\u7684\u793a\u4f8b\uff1a<\/p>\n
\nvoid fetch_data() {\n    if (mysql_query(conn, \"SELECT x, y FROM points\")) {\n        fprintf(stderr, \"SELECT * FROM points failed. Error: %sn\", mysql_error(conn));\n        return;\n    }\n\n    res = mysql_store_result(conn);\n    if (res == NULL) {\n        fprintf(stderr, \"mysql_store_result() failed. Error: %sn\", mysql_error(conn));\n        return;\n    }\n\n    while ((row = mysql_fetch_row(res)) != NULL) {\n        printf(\"Point: (%s, %s)n\", row[0], row[1]);\n    }\n\n    mysql_free_result(res);\n}\n<\/code><\/pre>\n
\u9019\u6bb5\u4ee3\u78bc\u57f7\u884c\u4e86\u4e00\u500b\u7c21\u55ae\u7684SQL\u67e5\u8a62\uff0c\u5f9e\u540d\u70ba\u201cpoints\u201d\u7684\u8868\u4e2d\u63d0\u53d6x\u548cy\u5750\u6a19\u3002\u63d0\u53d6\u7684\u6578\u64da\u53ef\u4ee5\u7528\u65bc\u5f8c\u7e8c\u7684\u7e6a\u5716\u64cd\u4f5c\u3002<\/p>\n
3. \u7e6a\u88fd\u9ede\u5716<\/h2>\n
\u5728\u63d0\u53d6\u6578\u64da\u5f8c\uff0c\u6211\u5011\u9700\u8981\u5c07\u5176\u7e6a\u88fd\u70ba\u9ede\u5716\u3002\u9019\u88e1\u6211\u5011\u53ef\u4ee5\u4f7f\u7528\u7c21\u55ae\u7684\u5716\u5f62\u5eab\uff0c\u5982SDL\u6216OpenGL\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528SDL\u7e6a\u88fd\u9ede\u7684\u57fa\u672c\u793a\u4f8b\uff1a<\/p>\n
\n#include \n\nvoid draw_points(int x, int y) {\n    SDL_SetRenderDrawColor(renderer, 255, 0, 0, 255); \/\/ \u8a2d\u7f6e\u984f\u8272\u70ba\u7d05\u8272\n    SDL_RenderDrawPoint(renderer, x, y);\n}\n\nvoid render() {\n    SDL_RenderClear(renderer);\n    \/\/ \u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u9ede\u7684\u6578\u7d44\n    int points[][2] = {{100, 150}, {200, 250}, {300, 350}};\n    for (int i = 0; i < 3; i++) {\n        draw_points(points[i][0], points[i][1]);\n    }\n    SDL_RenderPresent(renderer);\n}\n<\/code><\/pre>\n
\u5728\u9019\u6bb5\u4ee3\u78bc\u4e2d\uff0c\u6211\u5011\u8a2d\u7f6e\u4e86\u6e32\u67d3\u984f\u8272\u4e26\u7e6a\u88fd\u4e86\u5e7e\u500b\u9ede\u3002\u9019\u4e9b\u9ede\u7684\u5750\u6a19\u53ef\u4ee5\u5f9e\u6578\u64da\u5eab\u4e2d\u63d0\u53d6\u7684\u6578\u64da\u4e2d\u7372\u5f97\u3002<\/p>\n
4. \u6574\u5408\u6240\u6709\u90e8\u5206<\/h2>\n
\u5c07\u4e0a\u8ff0\u6240\u6709\u90e8\u5206\u6574\u5408\u5728\u4e00\u8d77\uff0c\u6211\u5011\u53ef\u4ee5\u5275\u5efa\u4e00\u500b\u5b8c\u6574\u7684\u7a0b\u5e8f\uff0c\u5f9e\u6578\u64da\u5eab\u4e2d\u63d0\u53d6\u6578\u64da\u4e26\u5c07\u5176\u7e6a\u88fd\u70ba\u9ede\u5716\u3002\u9019\u6a23\u7684\u7a0b\u5e8f\u4e0d\u50c5\u80fd\u5920\u5e6b\u52a9\u6211\u5011\u53ef\u8996\u5316\u6578\u64da\uff0c\u9084\u80fd\u63d0\u9ad8\u6211\u5011\u5c0d\u6578\u64da\u7684\u7406\u89e3\u3002<\/p>\n
\u7e3d\u7d50<\/h2>\n
\u901a\u904e\u4f7f\u7528C\u8a9e\u8a00\uff0c\u6211\u5011\u53ef\u4ee5\u6709\u6548\u5730\u5f9e\u6578\u64da\u5eab\u4e2d\u63d0\u53d6\u6578\u64da\u4e26\u5c07\u5176\u53ef\u8996\u5316\u3002\u9019\u4e00\u904e\u7a0b\u6d89\u53ca\u6578\u64da\u5eab\u7684\u9023\u63a5\u3001\u6578\u64da\u7684\u63d0\u53d6\u4ee5\u53ca\u5716\u5f62\u7684\u7e6a\u88fd\uff0c\u5c0d\u65bc\u958b\u767c\u8005\u4f86\u8aaa\u662f\u4e00\u500b\u975e\u5e38\u5be6\u7528\u7684\u6280\u80fd\u3002\u5982\u679c\u60a8\u9700\u8981\u7a69\u5b9a\u7684 VPS<\/a> \u4f86\u904b\u884c\u60a8\u7684\u61c9\u7528\u7a0b\u5e8f\uff0cServer.HK \u63d0\u4f9b\u4e86\u591a\u7a2e\u9078\u64c7\uff0c\u9069\u5408\u5404\u7a2e\u9700\u6c42\u3002\u7121\u8ad6\u662f \u9999\u6e2fVPS<\/a> \u9084\u662f\u5176\u4ed6\u670d\u52d9\uff0c\u60a8\u90fd\u53ef\u4ee5\u5728\u6211\u5011\u7684\u7db2\u7ad9\u4e0a\u627e\u5230\u5408\u9069\u7684\u89e3\u6c7a\u65b9\u6848\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u4f7f\u7528C\u8a9e\u8a00\u5be6\u73fe\u6578\u64da\u5eab\u9ede\u7e6a\u88fd\u529f\u80fd\uff0c\u5c07\u6578\u64da\u5eab\u4e2d\u7684\u6578\u64da\u53ef\u8996\u5316\uff0c\u8f15\u9b06\u5c55\u793a\u548c\u5206\u6790\u6578\u64da\u9ede\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-60169","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/60169","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=60169"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/60169\/revisions"}],"predecessor-version":[{"id":60170,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/60169\/revisions\/60170"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=60169"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=60169"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=60169"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}