{"id":9967,"date":"2023-10-17T10:35:12","date_gmt":"2023-10-17T10:35:12","guid":{"rendered":"https:\/\/adelnasim.com\/docs\/courses\/cpp-tutorial\/function-part-4-random-functions\/"},"modified":"2024-04-07T01:19:29","modified_gmt":"2024-04-07T01:19:29","slug":"function-part-4-random-functions","status":"publish","type":"docs","link":"https:\/\/adelnasim.com\/ar\/docs\/courses\/cpp-tutorial\/function-part-4-random-functions\/","title":{"rendered":"\u0627\u0644\u062f\u0651\u0627\u0644\u0651\u0629 (4) - \u0627\u0644\u062f\u0648\u0627\u0644\u0651 \u0627\u0644\u0639\u0634\u0648\u0627\u0626\u064a\u0629 Random functions"},"content":{"rendered":"
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\u062a\u064f\u0633\u062a\u062e\u062f\u0645 \u0627\u0644\u062f\u0648\u0627\u0644 \u0627\u0644\u0639\u0634\u0648\u0627\u0626\u064a\u0629 \u0641\u064a \u0644\u063a\u0629 C++ \u0644\u0625\u0646\u0634\u0627\u0621 \u0623\u0631\u0642\u0627\u0645 \u0639\u0634\u0648\u0627\u0626\u064a\u0629. \u0647\u0646\u0627\u0643 \u062f\u0627\u0644\u062a\u0627\u0646 \u0639\u0634\u0648\u0627\u0626\u064a\u062a\u0627\u0646 \u062c\u0627\u0647\u0632\u062a\u0627\u0646 \u0641\u064a \u0644\u063a\u0629 C++: rand()<\/code> \u0648 srand()<\/code>.<\/p>\n

\u0627\u0644\u0640 rand()<\/code> \u062a\u0646\u0634\u0626 \u0627\u0644\u062f\u0627\u0644\u0629 \u0639\u062f\u062f\u064b\u0627 \u0635\u062d\u064a\u062d\u064b\u0627 \u0639\u0634\u0648\u0627\u0626\u064a\u064b\u0627 \u0628\u064a\u0646 0 \u0648RAND_MAX\u060c \u062d\u064a\u062b RAND_MAX \u0647\u0648 \u0645\u0627\u0643\u0631\u0648 \u062a\u0645 \u062a\u0639\u0631\u064a\u0641\u0647 \u0641\u064a \u0645\u0644\u0641 \u0627\u0644\u0640 header cstdlib<\/code> . \u0627\u0644\u062f\u0627\u0644\u0651\u0629 srand()<\/code> \u062a\u0633\u062a\u062e\u062f\u0645 \u0644\u0648\u0636\u0639 \u0628\u0630\u0631\u0629 \u0644\u0645\u0648\u0644\u062f \u0627\u0644\u0623\u0631\u0642\u0627\u0645 \u0627\u0644\u0639\u0634\u0648\u0627\u0626\u064a\u0629. \u0625\u0630\u0627 \u0644\u0645 \u062a\u0633\u062a\u062f\u0639\u064a \u0627\u0644\u062f\u0627\u0644\u0629 srand()<\/code>\u060c \u0633\u064a\u062a\u0645 \u062a\u0635\u0646\u064a\u0641 \u0645\u0648\u0644\u062f \u0627\u0644\u0623\u0631\u0642\u0627\u0645 \u0627\u0644\u0639\u0634\u0648\u0627\u0626\u064a\u0629 \u0628\u0642\u064a\u0645\u0629 \u0627\u0641\u062a\u0631\u0627\u0636\u064a\u0629.<\/p>\n

\u0645\u062b\u0627\u0644 1:<\/strong><\/p>\n

#include <iostream>\r\n#include <cstdlib>\r\n\r\nusing namespace std;\r\nint main()\r\n{\r\n    \r\n    cout << rand() << endl;\r\n    \r\n    return 0;\r\n}\r\n<\/pre>\n
\u064a\u0637\u0628\u0639 \u0647\u0630\u0627 \u0627\u0644\u0628\u0631\u0646\u0627\u0645\u062c \u0639\u062f\u062f\u064b\u0627 \u0635\u062d\u064a\u062d\u064b\u0627 \u0639\u0634\u0648\u0627\u0626\u064a\u064b\u0627 \u0625\u0644\u0649 \u0634\u0627\u0634\u0629 \u0627\u0644\u0645\u062e\u0631\u062c\u0627\u062a.<\/p>\n
\u0645\u062b\u0627\u0644 2:<\/strong><\/p>\n<\/div>\n<\/div>\n<\/div>\n
#include <iostream>\r\n#include <cstdlib>\r\n\r\nusing namespace std;\r\nint main()\r\n{\r\n    for (size_t i = 0; i < 10; i++)\r\n    {\r\n        cout << rand() << endl;\r\n    }\r\n    \r\n    return 0;\r\n}<\/pre>\n
\u0647\u0630\u0627 \u0627\u0644\u0628\u0631\u0646\u0627\u0645\u062c \u0639\u0628\u0627\u0631\u0629 \u0639\u0646 \u062d\u0644\u0642\u0629 \u062f\u0648\u0631\u0627\u0646 \u062a\u0637\u0628\u0639 10 \u0623\u0639\u062f\u0627\u062f \u0635\u062d\u064a\u062d\u0629 \u0639\u0634\u0648\u0627\u0626\u064a\u0629 \u0639\u0644\u0649 \u0634\u0627\u0634\u0629 \u0627\u0644\u0645\u062e\u0631\u062c\u0627\u062a.<\/p>\n
\u0645\u062b\u0627\u0644 3:<\/strong><\/p>\n
#include <iostream>\r\n#include <cstdlib>\r\nusing namespace std;\r\n\r\nint main()\r\n{\r\n    for (size_t i = 0; i < 10; i++)\r\n    {\r\n        cout << rand()%10 << endl;\r\n    }\r\n    \r\n    return 0;\r\n}\r\n<\/pre>\n
\u064a\u0646\u0634\u0626 \u0647\u0630\u0627 \u0627\u0644\u0628\u0631\u0646\u0627\u0645\u062c \u0631\u0642\u0645\u064b\u0627 \u0639\u0634\u0648\u0627\u0626\u064a\u064b\u0627 \u0628\u064a\u0646 0 \u06489 \u0648\u064a\u0637\u0628\u0639\u0647 \u0639\u0644\u0649 \u0634\u0627\u0634\u0629 \u0627\u0644\u0645\u062e\u0631\u062c\u0627\u062a. \u064a\u0642\u0648\u0645 \u0645\u0639\u0627\u0645\u0644 \u0627\u0644\u0642\u0633\u0645\u0629 (%) \u0628\u0625\u0631\u062c\u0627\u0639 \u0628\u0627\u0642\u064a \u0639\u0645\u0644\u064a\u0629 \u0627\u0644\u0642\u0633\u0645\u0629. \u0625\u0630\u0646 \u0627\u0644\u062a\u0639\u0628\u064a\u0631 rand()%10<\/code> \u064a\u0631\u062c\u0639 \u0628\u0627\u0642\u064a \u0642\u0633\u0645\u0629 \u0627\u0644\u0639\u0645\u0644\u064a\u0629 \u0627\u0644\u062d\u0633\u0627\u0628\u064a\u0629 rand() \/ 10<\/code>\u0645\u0645\u0627 \u0633\u064a\u0639\u0637\u064a\u0646\u0627 \u0631\u0642\u0645\u064b\u0627 \u0628\u064a\u0646 0 \u0648 9.<\/p>\n
\u0645\u062b\u0627\u0644 4:<\/strong><\/p>\n
#include <iostream>\r\n#include <cstdlib>\r\nusing namespace std;\r\n\r\nint main()\r\n{\r\n    for (size_t i = 1; i <= 10; i++)\r\n    {\r\n        cout << rand()%(30 - 20 + 1) + 20 << endl;\r\n    }\r\n    \r\n    return 0;\r\n}<\/pre>\n
\u064a\u0642\u0648\u0645 \u0647\u0630\u0627 \u0627\u0644\u0628\u0631\u0646\u0627\u0645\u062c \u0628\u0625\u0646\u0634\u0627\u0621 \u0639\u062f\u062f \u0639\u0634\u0648\u0627\u0626\u064a \u0628\u064a\u0646 20 \u064830 \u0648\u0637\u0628\u0627\u0639\u062a\u0647 \u0639\u0644\u0649 \u0634\u0627\u0634\u0629 \u0627\u0644\u0645\u062e\u0631\u062c\u0627\u062a.<\/p>\n
\u0645\u062b\u0627\u0644 5:<\/strong><\/p>\n
#include <iostream>\r\n#include <cstdlib>\r\n#include <ctime>\r\nusing namespace std;\r\n\r\nint main()\r\n{\r\n    srand(time(0));\r\n    for (size_t i = 1; i <= 10; i++)\r\n    {\r\n        cout << rand()%(30 - 20 + 1) + 20 << endl;\r\n    }\r\n    \r\n    return 0;\r\n}<\/pre>\n
\u0627\u0644\u0640 srand(time(0));<\/code> \u0647\u064a \u062f\u0627\u0644\u0629 \u062a\u0648\u0644\u064a\u062f \u0627\u0644\u0623\u0631\u0642\u0627\u0645 \u0627\u0644\u0639\u0634\u0648\u0627\u0626\u064a\u0629 \u0645\u0639 \u0627\u0644\u0648\u0642\u062a \u0627\u0644\u062d\u0627\u0644\u064a. \u0648\u0647\u0630\u0627 \u064a\u0636\u0645\u0646 \u0623\u0646 \u0627\u0644\u0623\u0631\u0642\u0627\u0645 \u0627\u0644\u0639\u0634\u0648\u0627\u0626\u064a\u0629 \u0645\u062e\u062a\u0644\u0641\u0629 \u0641\u064a \u0643\u0644 \u0645\u0631\u0629 \u064a\u062a\u0645 \u0641\u064a\u0647\u0627 \u062a\u0634\u063a\u064a\u0644 \u0627\u0644\u0628\u0631\u0646\u0627\u0645\u062c.<\/p>\n
\u0627\u0644\u0640 srand()<\/code> \u062a\u0623\u062e\u0630 \u0627\u0644\u062f\u0627\u0644\u0629 \u0639\u062f\u062f\u064b\u0627 \u0635\u062d\u064a\u062d\u064b\u0627 \u0643\u0645\u062a\u063a\u064a\u0631 \u0644\u0647\u0627 \u0648\u062a\u0642\u0648\u0645 \u0628\u062a\u0647\u064a\u0626\u0629 \u0645\u0648\u0644\u062f \u0627\u0644\u0623\u0631\u0642\u0627\u0645 \u0627\u0644\u0639\u0634\u0648\u0627\u0626\u064a\u0629 \u0628\u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0647\u0630\u0627 \u0627\u0644\u0645\u062a\u063a\u064a\u0631. \u0627\u0644 time(0)<\/code> \u0647\u064a \u062f\u0627\u0644\u0629 \u062a\u0642\u0648\u0645 \u0628\u0625\u0631\u062c\u0627\u0639 \u0627\u0644\u0648\u0642\u062a \u0627\u0644\u062d\u0627\u0644\u064a \u0643\u0642\u064a\u0645\u0629 time_t\u060c \u0648\u0647\u0648 \u0639\u062f\u062f \u0635\u062d\u064a\u062d.<\/p>\n
\u0645\u0646 \u062e\u0644\u0627\u0644 \u0632\u0631\u0639 \u0645\u0648\u0644\u062f \u0627\u0644\u0623\u0631\u0642\u0627\u0645 \u0627\u0644\u0639\u0634\u0648\u0627\u0626\u064a\u0629 \u0645\u0639 \u0627\u0644\u0648\u0642\u062a \u0627\u0644\u062d\u0627\u0644\u064a\u060c \u0641\u0625\u0646\u0646\u0627 \u0646\u0633\u062a\u062e\u062f\u0645 \u0642\u064a\u0645\u0629 \u062a\u062a\u063a\u064a\u0631 \u0628\u0627\u0633\u062a\u0645\u0631\u0627\u0631\u060c \u0645\u0645\u0627 \u064a\u0636\u0645\u0646 \u0627\u062e\u062a\u0644\u0627\u0641 \u0627\u0644\u0623\u0631\u0642\u0627\u0645 \u0627\u0644\u0639\u0634\u0648\u0627\u0626\u064a\u0629 \u0641\u064a \u0643\u0644 \u0645\u0631\u0629 \u064a\u062a\u0645 \u0641\u064a\u0647\u0627 \u062a\u0634\u063a\u064a\u0644 \u0627\u0644\u0628\u0631\u0646\u0627\u0645\u062c.<\/p>\n
\u0645\u0646 \u0627\u0644\u0645\u0647\u0645 \u0632\u0631\u0639 \u0645\u0648\u0644\u062f \u0627\u0644\u0623\u0631\u0642\u0627\u0645 \u0627\u0644\u0639\u0634\u0648\u0627\u0626\u064a\u0629 \u0642\u0628\u0644 \u0627\u0633\u062a\u062e\u062f\u0627\u0645 rand()<\/code> . \u0625\u0630\u0627 \u0644\u0645 \u062a\u0642\u0645 \u0628\u0632\u0631\u0639 \u0645\u0648\u0644\u062f \u0627\u0644\u0623\u0631\u0642\u0627\u0645 \u0627\u0644\u0639\u0634\u0648\u0627\u0626\u064a\u0629\u060c \u0641\u0633\u064a\u062a\u0645 \u0628\u0630\u0631\u0647 \u0628\u0642\u064a\u0645\u0629 \u0627\u0641\u062a\u0631\u0627\u0636\u064a\u0629\u060c \u0645\u0645\u0627 \u0633\u064a\u0624\u062f\u064a \u0625\u0644\u0649 \u0625\u0646\u0634\u0627\u0621 \u0646\u0641\u0633 \u0627\u0644\u062a\u0633\u0644\u0633\u0644 \u0645\u0646 \u0627\u0644\u0623\u0631\u0642\u0627\u0645 \u0627\u0644\u0639\u0634\u0648\u0627\u0626\u064a\u0629 \u0641\u064a \u0643\u0644 \u0645\u0631\u0629 \u064a\u062a\u0645 \u0641\u064a\u0647\u0627 \u062a\u0634\u063a\u064a\u0644 \u0627\u0644\u0628\u0631\u0646\u0627\u0645\u062c.<\/p>\n
\u0645\u062b\u0627\u0644 6:<\/strong><\/p>\n
#include <iostream>\r\n#include <cstdlib>\r\n#include <ctime>\r\nusing namespace std;\r\n\r\nint main()\r\n{\r\n    int x, y;\r\n    x = time(0);\r\n    for (size_t i = 0; i < 10000; i++)\r\n    {\r\n        cout << time(NULL) << endl;\r\n        y = time (0);\r\n    }\r\n    cout << \"The token time:\" << y - x << endl;\r\n    return 0;\r\n}<\/pre>\n
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\u064a\u0637\u0628\u0639 \u0647\u0630\u0627 \u0627\u0644\u0628\u0631\u0646\u0627\u0645\u062c \u0627\u0644\u0648\u0642\u062a \u0627\u0644\u062d\u0627\u0644\u064a 10000 \u0645\u0631\u0629 \u0639\u0644\u0649 \u0634\u0627\u0634\u0629 \u0627\u0644\u0645\u062e\u0631\u062c\u0627\u062a \u062b\u0645 \u064a\u0637\u0628\u0639 \u0625\u062c\u0645\u0627\u0644\u064a \u0627\u0644\u0648\u0642\u062a \u0627\u0644\u0645\u0633\u062a\u063a\u0631\u0642 \u0644\u0644\u0642\u064a\u0627\u0645 \u0628\u0630\u0644\u0643.<\/p>\n
\u064a\u0639\u0645\u0644 \u0627\u0644\u0628\u0631\u0646\u0627\u0645\u062c \u0639\u0644\u0649 \u0627\u0644\u0646\u062d\u0648 \u0627\u0644\u062a\u0627\u0644\u064a:<\/p>\n
    \n
  1. \u0627\u0644\u0640\u00a0int x, y;<\/code>\u00a0\u0647\u0648 \u062a\u0639\u0631\u064a\u0641 \u0644\u0645\u062a\u063a\u064a\u0631\u064a\u0646 \u0635\u062d\u064a\u062d\u064a\u0646\u00a0x<\/code>\u00a0\u0648\u00a0y<\/code>.<\/li>\n
  2. \u0627\u0644\u0640\u00a0x = time(0);<\/code>\u00a0\u064a\u0639\u064a\u0646 \u0627\u0644\u0648\u0642\u062a \u0627\u0644\u062d\u0627\u0644\u064a \u0644\u0644\u0645\u062a\u063a\u064a\u0631\u00a0x<\/code>.<\/li>\n
  3. \u0627\u0644\u0640\u00a0for (size_t i = 0; i < 10000; i++)<\/code>\u00a0\u062d\u0644\u0641\u0629 \u062f\u0648\u0631\u0627\u0646 \u064a\u062a\u0645 \u062a\u0643\u0631\u0627\u0631\u0647\u0627 10000 \u0645\u0631\u0629.<\/li>\n
  4. \u0641\u064a \u0643\u0644 \u062a\u0643\u0631\u0627\u0631 \u0644\u0644\u062d\u0644\u0642\u0629 for\u060c \u064a\u062a\u0645 \u062a\u0646\u0641\u064a\u0630 \u0627\u0644\u0643\u0648\u062f \u0627\u0644\u062a\u0627\u0644\u064a:\n
      \n
    • \u062a\u062a\u0645 \u0637\u0628\u0627\u0639\u0629 \u0627\u0644\u0648\u0642\u062a \u0627\u0644\u062d\u0627\u0644\u064a \u0639\u0644\u0649 \u0634\u0627\u0634\u0629 \u0627\u0644\u0645\u062e\u0631\u062c\u0627\u062a \u0628\u0627\u0633\u062a\u062e\u062f\u0627\u0645\u00a0cout << time(NULL) << endl;<\/code>\u00a0.<\/li>\n<\/ul>\n<\/li>\n
    • \u0627\u0644\u0640\u00a0y = time(0);<\/code>\u00a0\u064a\u0639\u064a\u0646 \u0627\u0644\u0648\u0642\u062a \u0627\u0644\u062d\u0627\u0644\u064a \u0644\u0644\u0645\u062a\u063a\u064a\u0631\u00a0y<\/code>.<\/li>\n
    • \u0627\u0644\u0640\u00a0cout << \"The token time:\" << y - x << endl;<\/code>\u00a0\u064a\u0637\u0628\u0639 \u0625\u062c\u0645\u0627\u0644\u064a \u0627\u0644\u0648\u0642\u062a \u0627\u0644\u0645\u0633\u062a\u063a\u0631\u0642 \u0644\u0637\u0628\u0627\u0639\u0629 \u0627\u0644\u0648\u0642\u062a \u0627\u0644\u062d\u0627\u0644\u064a 10000 \u0645\u0631\u0629 \u0639\u0644\u0649 \u0634\u0627\u0634\u0629 \u0627\u0644\u0645\u062e\u0631\u062c\u0627\u062a.<\/li>\n<\/ol>\n<\/div>\n<\/div>\n<\/div>\n
      \u0627\u0644\u0640 time(NULL)<\/code> \u0647\u064a \u062f\u0627\u0644\u0629 \u0645\u0631\u0627\u062f\u0641\u0629 \u0644\u0644\u062f\u0627\u0644\u0629 time(0)<\/code> .<\/p>\n
      \u064a\u0645\u0643\u0646\u0643 \u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0647\u0630\u0627 \u0627\u0644\u0628\u0631\u0646\u0627\u0645\u062c \u0644\u0642\u064a\u0627\u0633 \u0623\u062f\u0627\u0621 \u0627\u0644\u062a\u0639\u0644\u064a\u0645\u0627\u062a \u0627\u0644\u0628\u0631\u0645\u062c\u064a\u0629 \u0627\u0644\u062e\u0627\u0635\u0629 \u0628\u0643 \u0623\u0648 \u0644\u062d\u0633\u0627\u0628 \u0627\u0644\u0648\u0642\u062a \u0627\u0644\u0645\u0646\u0642\u0636\u064a \u0628\u064a\u0646 \u062d\u062f\u062b\u064a\u0646.<\/p>","protected":false},"excerpt":{"rendered":"
      Random functions in C++ are used to generate random numbers. There are two built-in random functions in C++: rand() and srand(). The rand() function generates a random integer between 0 and RAND_MAX, where RAND_MAX is a macro that is defined in the cstdlib header file. The srand() function is used to seed the random number […]<\/p>","protected":false},"author":3,"featured_media":0,"parent":2744,"menu_order":21,"comment_status":"closed","ping_status":"closed","template":"","doc_tag":[],"class_list":["post-9967","docs","type-docs","status-publish","hentry","no-post-thumbnail"],"acf":[],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/adelnasim.com\/ar\/wp-json\/wp\/v2\/docs\/9967","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/adelnasim.com\/ar\/wp-json\/wp\/v2\/docs"}],"about":[{"href":"https:\/\/adelnasim.com\/ar\/wp-json\/wp\/v2\/types\/docs"}],"author":[{"embeddable":true,"href":"https:\/\/adelnasim.com\/ar\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/adelnasim.com\/ar\/wp-json\/wp\/v2\/comments?post=9967"}],"version-history":[{"count":3,"href":"https:\/\/adelnasim.com\/ar\/wp-json\/wp\/v2\/docs\/9967\/revisions"}],"predecessor-version":[{"id":9970,"href":"https:\/\/adelnasim.com\/ar\/wp-json\/wp\/v2\/docs\/9967\/revisions\/9970"}],"up":[{"embeddable":true,"href":"https:\/\/adelnasim.com\/ar\/wp-json\/wp\/v2\/docs\/2744"}],"wp:attachment":[{"href":"https:\/\/adelnasim.com\/ar\/wp-json\/wp\/v2\/media?parent=9967"}],"wp:term":[{"taxonomy":"doc_tag","embeddable":true,"href":"https:\/\/adelnasim.com\/ar\/wp-json\/wp\/v2\/doc_tag?post=9967"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}