C++ Precedence and associativity <\/a><\/p>\n\n\n\n\u5148\u524d\u89c0\u5ff5<\/h3>\n\n\n\n What is the purpose of {} in C++?<\/p>\n\n\n\n
{} can be used to initialise variables<\/strong> in C++11 in the same way that they are used to initialise arrays and structures in C.<\/p>\n\n\n\n{} \u53ef\u7528\u65bc\u5c07C++ \u5df2\u5ba3\u544a\u7684\u8b8a\u6578\u505a \u521d\u59cb\u503c\u4ee3\u5165\u3002<\/strong><\/p>\n\n\n\n<\/p>\n\n\n\n
\u7bc4\u4f8b01<\/h2>\n\n\n\n#include <iostream>\n\n\nint main(){\n\n\/\/\u521d\u59cb\u503c\u4ee3\u5165\n int a {6};\n int b {3};\n int c {8};\n int d {9};\n int e {3};\n int f {2};\n int g {5};\n \n int result = a + b * c -d\/e -f + g; \/\/ 6 + 24 - 3 - 2 + 5\n \n std::cout << \"result : \" << result << std::endl;\n\n system(\"pause\");\n\n return 0;\n}\n\n\/\/\u7d50\u679c: 6 + 24 - 3 - 2 + 5 = 30<\/code><\/pre>\n\n\n\n\u7bc4\u4f8b02<\/h2>\n\n\n\n#include <iostream>\n\n\nint main(){\n\n int a {6};\n int b {3};\n int c {8};\n int d {9};\n int e {3};\n int f {2};\n int g {5};\n \n int result = a + b * c -d\/e -f + g; \/\/ 6 + 24 - 3 - 2 + 5\n \n std::cout << \"result : \" << result << std::endl;\n\n result = a\/b*c +d - e + f; \/\/ 16 + 9 - 3 + 2\n std::cout << \"result : \" << result << std::endl;\n\n system(\"pause\");\n\n return 0;\n}\n\n\/\/\u7d50\u679c: 6 + 24 - 3 - 2 + 5 = 30\n\/\/\u7d50\u679c: 16 + 9 - 3 + 2 =24<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"\u7576\u4f60\u6709\u7b97\u6578\u7684\u7d93\u9a57\u6642\uff0c\u4f60\u6703\u77e5\u9053\u5728\u505a\u56db\u5247\u904b\u7b97\u6642\u6703\u6709\u5148\u4e58\u9664\u5f8c\u52a0\u6e1b\u7684\u898f\u5247 \u7a0b\u5f0f\u7576\u7136\u4e5f\u6709\uff0cC++ \u88e1\u9762\u4e5f\u6709\u76f8\u95dc\u7684\u5148\u5f8c\u9806\u5e8f\u8207\u95dc\u806f\u6027 C++ Precedence and associativity \u5148\u524d\u89c0\u5ff5 What is the purpose of {} in C++? {} can be used to initialise variables in C++11 in the same way that they are used to initialise arrays and structures in C. {} \u53ef\u7528\u65bc\u5c07C++ \u5df2\u5ba3\u544a\u7684\u8b8a\u6578\u505a \u521d\u59cb\u503c\u4ee3\u5165\u3002 \u7bc4\u4f8b01 \u7bc4\u4f8b02<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"nf_dc_page":"","_eb_attr":"","WB4WB4WP_MODE":"","WB4WP_PAGE_SCRIPTS":"","WB4WP_PAGE_STYLES":"","WB4WP_PAGE_FONTS":"","WB4WP_PAGE_HEADER":"","WB4WP_PAGE_FOOTER":"","_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[60],"tags":[61,59],"class_list":["post-1201","post","type-post","status-publish","format-standard","hentry","category-cpp-c-coding","tag-cpp","tag-operator-precedence"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t