{"id":1888,"date":"2018-08-26T14:11:12","date_gmt":"2018-08-26T06:11:12","guid":{"rendered":"https:\/\/www.yusian.com\/blog\/?p=1888"},"modified":"2020-12-02T15:13:44","modified_gmt":"2020-12-02T07:13:44","slug":"c%e5%9f%ba%e6%9c%ac%e6%95%b0%e6%8d%ae%e7%b1%bb%e5%9e%8b%e8%af%a6%e8%a7%a3","status":"publish","type":"post","link":"https:\/\/www.yusian.com\/blog\/cpp\/2018\/08\/26\/1411121888.html","title":{"rendered":"C++\u57fa\u672c\u6570\u636e\u7c7b\u578b\u8be6\u89e3"},"content":{"rendered":"

1\u3001\u6574\u6570\u7c7b\u578b\u5185\u5b58\u5360\u7528\u60c5\u51b5<\/h4>\n

1.1\u3001int<\/h5>\n
\u9ed8\u8ba4\u60c5\u51b5\u4e0bint\u5360\u75284\u4e2a\u5b57\u8282\n\u53d6\u503c\u8303\u56f4\uff1a -2147483648\uff5e+2147483647\n\u6700\u5927\u6570\u503c\uff1a42\u4ebf+\n<\/code><\/pre>\n
1.2\u3001long int<\/h5>\n
\u9ed8\u8ba4\u60c5\u51b5\u4e0blong int 32\u4f4d\u673a\u5668\u5360\u75284\u4e2a\u5b57\u8282\uff0c64\u4f4d\u673a\u5668\u5360\u75288\u4e2a\u5b57\u8282\n8\u5b57\u8282\u53d6\u503c\u8303\u56f4\uff1a-9223372036854775808\uff5e+9223372036854775807\n\u6700\u5927\u6570\u503c(8\u5b57\u8282)\uff1a180\u4e07\u4ebf\u4ebf\n<\/code><\/pre>\n
1.3\u3001long long int<\/h5>\n
\u5f3a\u5236\u4f7f\u75288\u4e2a\u5b57\u8282\n\u53d6\u503c\u8303\u56f4\uff1a-9223372036854775808\uff5e+9223372036854775807\n\u6700\u5927\u6570\u503c\uff1a180\u4e07\u4ebf\u4ebf\n<\/code><\/pre>\n
1.4\u3001short int<\/h4>\n
\u5360\u75282\u4e2a\u5b57\u8282\n\u53d6\u503c\u8303\u56f4\uff1a-32768\uff5e+32767\n\u6700\u5927\u6570\u503c\uff1a65535\n<\/code><\/pre>\n
2\u3001\u6d6e\u70b9\u6570\u5728\u5185\u5b58\u5728\u7684\u8868\u793a\u65b9\u5f0f<\/h4>\n
2.1\u3001\u5355\u7cbe\u5ea6\u6d6e\u70b9\u578b<\/h5>\n
\u7b26\u53f7\u4f4dS(1) + \u6307\u6570\u4f4dE(8) + \u6709\u6548\u6570\u5b57M(23)\n1.     \u7b26\u53f7\u4f4d\u8868\u793a\u6b63\u8d1f\uff1b\n2.     \u6307\u6570\u4f4d\u503c-127\u8868\u793a\u6307\u6570\uff1b\n3.     \u6709\u6548\u6570\u5b57\u8868\u793a\u5c0f\u6570\u70b9\u540e\u7684\u6570\u503c\n\u6709\u6548\u6570\u5b57\u4e3a7\u4f4d\u957f\u5ea6\uff0c\u7b2c8\u4f4d\u4e0d\u7cbe\u786e\n<\/code><\/pre>\n
    float f = 1234567890; \/\/ 7\u4f4d\u6709\u6548\u957f\u5ea6\n    printf(\"%f\\n\", f);  \/\/ \u8f93\u51fa\u7ed3\u679c1234567936.000000\n<\/code><\/pre>\n
2.2\u3001\u53cc\u7cbe\u5ea6\u6d6e\u70b9\u578b<\/h5>\n
\u7b26\u53f7\u4f4dS(1) + \u6307\u6570\u4f4dE(11) + \u6709\u6548\u6570\u5b57M(52)\n1.     \u7b26\u53f7\u4f4d\u8868\u793a\u6b63\u8d1f\uff1b\n2.     \u6307\u6570\u4f4d\u503c-127\u8868\u793a\u6307\u6570\uff1b\n3.     \u6709\u6548\u6570\u5b57\u8868\u793a\u5c0f\u6570\u70b9\u540e\u7684\u6570\u503c\n\u6709\u6548\u6570\u5b57\u4e3a16\u4f4d\u957f\u5ea6\uff0c\u7b2c17\u4f4d\u4e0d\u7cbe\u786e\n<\/code><\/pre>\n
    double d = 12345678901234567890;\/\/ 16\u4f4d\u6709\u6548\u6570\u5b57\u957f\u5ea6\n    printf(\"%f\\n\", d);   \/\/ 12345678901234567000.000000\n<\/code><\/pre>\n
3\u3001C++\u4e2dcout\u8f93\u51fa\u7b26\u70b9\u6570<\/h4>\n
\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n
using namespace std;\ndouble d = 1234567890.1234567890;\ncout << d << endl; \/\/ \u9ed8\u8ba4\u4ee5float\u7684\u7cbe\u5ea6\u8f93\u51fa\ncout.precision(8); \/\/ \u8bbe\u7f6e\u7cbe\u5ea68\u4f4d\u6709\u6548\u6570\u5b57\u957f\u5ea6\ncout << d << endl;\ncout.flags(cout.fixed); \/\/ \u8bbe\u7f6e\u7cbe\u5ea68\u4f4d\u4e3a\u5c0f\u6570\u70b9\u540e8\u4f4d\u6709\u6548\u957f\u5ea6\ncout << d << endl;\ncout.unsetf(cout.fixed); \/\/ \u53d6\u6d888\u4f4d\u6709\u6548\u5c0f\u6570\u7684\u8bbe\u7f6e\uff0c\u8fd8\u539fflags\u9ed8\u8ba4\u8bbe\u7f6e\ncout << d << endl;\n<\/code><\/pre>\n
\u8f93\u51fa\u7ed3\u679c\u4e3a\uff1a<\/p>\n
1.23457e+009\n1.2345679e+009\n1234567890.12345670\n1.2345679e+009\n<\/code><\/pre>\n
\u8f93\u5165\u8f93\u51fa\u793a\u4f8b\uff1a<\/h6>\n
#include <iostream>\n#include <Windows.h>\n\nusing namespace std;\nint main() {\n    char type;\n    cout << \"\u8bf7\u9009\u62e9\u60a8\u9700\u8981\u7684\u7c7b\u578b: \" << endl;\n    cout << \"A\u3001\u8d24\u60e0\u578b\" << endl;\n    cout << \"B\u3001\u6cfc\u8fa3\u578b\" << endl;\n    cout << \"C\u3001\u6587\u827a\u578b\" << endl;\n    cout << \"D\u3001\u8fd0\u52a8\u578b\" << endl;\n    cout << \"\u8bf7\u8f93\u5165: \";\n    cin >> type;    \/\/ scanf(\"%c\", &type);\n    cout << \"\u8bf7\u8f93\u5165\u60a8\u7684\u8eab\u9ad8\uff08\u5355\u4f4d\uff1a\u5398\u7c73\uff09: \";\n    int height;\n    cin >> height;\n\n    cout << \"\u60a8\u559c\u6b22\u7684\u7c7b\u578b\u662f\uff1a\" << type << \", \u60a8\u7684\u8eab\u9ad8\u662f\uff1a\" << height << \"\u5398\u7c73\" << endl;\n    system(\"pause\");\n    return 0;\n}\n<\/code><\/pre>\n
4\u3001C++\u57fa\u672c\u8f93\u5165\u547d\u4ee4cin\u7684\u7b80\u5355\u4f7f\u7528<\/h4>\n
#include <iostream>\n#include <Windows.h>\n\nusing namespace std;\nint main() {\n\n    int age = 0;\n    do {\n        if (cin.fail()) {\n            cout << \"\u60a8\u8f93\u5165\u7684\u5e74\u9f84\u4e0d\u5408\u6cd5!\" << endl;\n        }\n        cout << \"\u8bf7\u8f93\u5165\u5e74\u9f84\uff1a\";\n        cin.clear(); \/\/ \u6e05\u9664cin\u9519\u8bef\u6807\u5fd7\n        cin.sync(); \/\/ \u6e05\u9664\u8f93\u5165\u7f13\u5b58\u533a\n        cin >> age;\n    } while (cin.fail());\n    int num = age * 365;\n    printf(\"%d\\n\", num);\n    system(\"pause\");\n    return 0;\n}\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"
1\u3001\u6574\u6570\u7c7b\u578b\u5185\u5b58\u5360\u7528\u60c5\u51b5 1.1\u3001int \u9ed8\u8ba4\u60c5\u51b5\u4e0bint\u5360\u75284\u4e2a\u5b57\u8282 \u53d6\u503c\u8303\u56f4\uff1a -2147483648\uff5e+2147483647 \u6700\u5927\u6570\u503c\uff1a42\u4ebf+ 1.2\u3001long int \u9ed8\u8ba4\u60c5\u51b5\u4e0blong int 32\u4f4d\u673a\u5668\u5360\u75284\u4e2a\u5b57\u8282\uff0c64\u4f4d\u673a\u5668\u5360\u75288\u4e2a\u5b57\u8282 8\u5b57\u8282\u53d6\u503c\u8303\u56f4\uff1a-9223372036854775808\uff5e+9223372036854775807 \u6700\u5927\u6570\u503c(8\u5b57\u8282)\uff1a180\u4e07\u4ebf\u4ebf 1.3\u3001long long int \u5f3a\u5236\u4f7f\u75288\u4e2a\u5b57\u8282 \u53d6\u503c\u8303\u56f4\uff1a-9223372036854775808\uff5e+9223372036854775807 \u6700\u5927\u6570\u503c\uff1a180\u4e07\u4ebf\u4ebf 1.4\u3001short int \u5360\u75282\u4e2a\u5b57\u8282 \u53d6\u503c\u8303\u56f4\uff1a-32768\uff5e+32767 \u6700\u5927\u6570\u503c\uff1a65535 2\u3001\u6d6e\u70b9\u6570\u5728\u5185\u5b58\u5728\u7684\u8868\u793a\u65b9\u5f0f 2.1\u3001\u5355\u7cbe\u5ea6\u6d6e\u70b9\u578b \u7b26\u53f7\u4f4dS(1) + \u6307\u6570\u4f4dE(8) + \u6709\u6548\u6570\u5b57M(23) 1. \u7b26\u53f7\u4f4d\u8868\u793a\u6b63\u8d1f\uff1b 2. \u6307\u6570\u4f4d\u503c-127\u8868\u793a\u6307\u6570\uff1b 3. \u6709\u6548\u6570\u5b57\u8868\u793a\u5c0f\u6570\u70b9\u540e\u7684\u6570\u503c \u6709\u6548\u6570\u5b57\u4e3a7\u4f4d\u957f\u5ea6\uff0c\u7b2c8\u4f4d\u4e0d\u7cbe\u786e float f = 1234567890; \/\/ 7\u4f4d\u6709\u6548\u957f\u5ea6 printf(“%f\\n”, f); \/\/ \u8f93\u51fa\u7ed3\u679c1234567936.000000 2.2\u3001\u53cc\u7cbe\u5ea6\u6d6e\u70b9\u578b \u7b26\u53f7\u4f4dS(1) + \u6307\u6570\u4f4dE(11) + \u6709\u6548\u6570\u5b57M(52) 1. […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[88],"tags":[92,325],"class_list":["post-1888","post","type-post","status-publish","format-standard","hentry","category-cpp","tag-cpp","tag-325"],"_links":{"self":[{"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/posts\/1888","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/comments?post=1888"}],"version-history":[{"count":0,"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/posts\/1888\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/media?parent=1888"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/categories?post=1888"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/tags?post=1888"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}