{"id":773,"date":"2024-11-07T08:15:27","date_gmt":"2024-11-07T00:15:27","guid":{"rendered":"https:\/\/fwq.ai\/blog\/773\/"},"modified":"2024-11-07T08:15:27","modified_gmt":"2024-11-07T00:15:27","slug":"c%e8%af%ad%e8%a8%80%e9%9d%a2%e5%90%91%e5%af%b9%e8%b1%a1%e7%bc%96%e7%a8%8b%ef%bc%9a%e5%bc%82%e5%b8%b8%e5%a4%84%e7%90%86%e6%9c%ba%e5%88%b6%e7%9a%84%e6%9c%ac%e8%b4%a8%e4%b8%8e%e5%ba%94%e7%94%a8%e9%97%ae","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/773\/","title":{"rendered":"C\u8bed\u8a00\u9762\u5411\u5bf9\u8c61\u7f16\u7a0b\uff1a\u5f02\u5e38\u5904\u7406\u673a\u5236\u7684\u672c\u8d28\u4e0e\u5e94\u7528\u95ee\u7b54"},"content":{"rendered":"

\u5f02\u5e38\u5904\u7406\u673a\u5236\u5728 c \u8bed\u8a00\u4e2d\u901a\u8fc7 try-catch \u7ed3\u6784\u5b9e\u73b0\uff0c\u4f7f\u7a0b\u5e8f\u5728\u5f02\u5e38\u60c5\u51b5\u4e0b\u4ecd\u80fd\u7ee7\u7eed\u8fd0\u884c\u3002\u5b83\u4ee5\u7edf\u4e00\u7684\u65b9\u5f0f\u5904\u7406\u5404\u79cd\u9519\u8bef\u60c5\u51b5\uff0c\u5982\u6587\u4ef6\u8bfb\u5199\u5f02\u5e38\uff0c\u786e\u4fdd\u7a0b\u5e8f\u6b63\u5e38\u8fd0\u884c\u3002<\/p>\n

\"C\u8bed\u8a00\u9762\u5411\u5bf9\u8c61\u7f16\u7a0b\uff1a\u5f02\u5e38\u5904\u7406\u673a\u5236\u7684\u672c\u8d28\u4e0e\u5e94\u7528\u95ee\u7b54\u63d2\u56fe\"<\/p>\n

C \u8bed\u8a00\u9762\u5411\u5bf9\u8c61\u7f16\u7a0b\uff1a\u5f02\u5e38\u5904\u7406\u673a\u5236\u7684\u672c\u8d28\u4e0e\u5e94\u7528<\/strong><\/p>\n

\u5f02\u5e38\u5904\u7406\u673a\u5236\u7684\u672c\u8d28<\/strong><\/p>\n

\u5f02\u5e38\u5904\u7406\u673a\u5236\u662f\u4e00\u79cd\u7a0b\u5e8f\u5316\u5904\u7406\u9519\u8bef\u7684\u65b9\u6cd5\uff0c\u4f7f\u7a0b\u5e8f\u5728\u5f02\u5e38\u60c5\u51b5\u4e0b\u4ecd\u80fd\u7ee7\u7eed\u8fd0\u884c\u3002C \u8bed\u8a00\u4e2d\u5f02\u5e38\u5904\u7406\u901a\u8fc7 try-catch \u7ed3\u6784\u5b9e\u73b0\u3002\u5f53\u5728 try \u5757\u4e2d\u68c0\u6d4b\u5230\u5f02\u5e38\u65f6\uff0c\u7a0b\u5e8f\u4f1a\u8df3\u8f6c\u5230\u76f8\u5e94\u7684 catch \u5757\uff0c\u4ee5\u4fbf\u5bf9\u5176\u8fdb\u884c\u5904\u7406\u3002<\/p>\n

\u7acb\u5373\u5b66\u4e60<\/span>\u201cC\u8bed\u8a00\u514d\u8d39\u5b66\u4e60\u7b14\u8bb0\uff08\u6df1\u5165\uff09\u201d\uff1b<\/p>\n

\u793a\u4f8b\u4ee3\u7801\uff1a<\/strong><\/p>\n

#include <stdio.h>\n#include <stdlib.h>\n\nint main() {\n    int* ptr = NULL;\n\n    try {\n        *ptr = 10; \/\/ \u6307\u9488\u672a\u521d\u59cb\u5316\uff0c\u4f1a\u5bfc\u81f4\u5f02\u5e38\n    } catch (int e) {\n        printf(\"\u5f02\u5e38\u5df2\u6355\u83b7\uff0c\u9519\u8bef\u4ee3\u7801\uff1a%d\n\", e);\n    }\n\n    return 0;\n}<\/stdlib.h><\/stdio.h><\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u4e0a\u8ff0\u4ee3\u7801\u4e2d\uff0c\u5f53\u5c1d\u8bd5\u5bf9\u672a\u521d\u59cb\u5316\u7684\u6307\u9488 ptr \u8fdb\u884c\u89e3\u5f15\u7528\u65f6\uff0c\u4f1a\u89e6\u53d1\u4e00\u4e2a\u5f02\u5e38\u3002\u7a0b\u5e8f\u4f1a\u8df3\u8f6c\u5230 catch \u5757\uff0c\u6355\u83b7\u5f02\u5e38\u5e76\u6253\u5370\u9519\u8bef\u4ee3\u7801\u3002<\/p>\n
\u5b9e\u6218\u6848\u4f8b<\/strong><\/p>\n
\u6848\u4f8b\uff1a\u6587\u4ef6\u8bfb\u5199\u64cd\u4f5c\u4e2d\u7684\u5f02\u5e38\u5904\u7406<\/strong><\/p>\n
\u6587\u4ef6\u8bfb\u5199\u64cd\u4f5c\u53ef\u80fd\u51fa\u73b0\u5404\u79cd\u5f02\u5e38\u60c5\u51b5\uff0c\u5982\u6587\u4ef6\u4e0d\u5b58\u5728\u3001\u8bfb\u5199\u6743\u9650\u4e0d\u8db3\u7b49\u3002\u4f7f\u7528\u5f02\u5e38\u5904\u7406\u673a\u5236\uff0c\u6211\u4eec\u53ef\u4ee5\u7edf\u4e00\u5904\u7406\u8fd9\u4e9b\u5f02\u5e38\uff0c\u786e\u4fdd\u7a0b\u5e8f\u6b63\u5e38\u8fd0\u884c\u3002<\/p>\n
\u793a\u4f8b\u4ee3\u7801\uff1a<\/strong><\/p>\n
#include <stdio.h>\n#include <stdlib.h>\n\nint main() {\n    FILE* fp;\n\n    try {\n        fp = fopen(\"test.txt\", \"r\"); \/\/ \u6587\u4ef6\u4e0d\u5b58\u5728\u65f6\u4f1a\u89e6\u53d1\u5f02\u5e38\n        if (fp == NULL) {\n            throw 1; \/\/ \u624b\u52a8\u629b\u51fa\u5f02\u5e38\n        }\n        \/\/ ... \u6587\u4ef6\u64cd\u4f5c\u4ee3\u7801\n    } catch (int e) {\n        printf(\"\u5f02\u5e38\u5df2\u6355\u83b7\uff0c\u9519\u8bef\u4ee3\u7801\uff1a%d\n\", e);\n    } finally {\n        if (fp != NULL) {\n            fclose(fp);\n        }\n    }\n\n    return 0;\n}<\/stdlib.h><\/stdio.h><\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u5728\u4e0a\u8ff0\u4ee3\u7801\u4e2d\uff0ctry \u5757\u5305\u542b\u5bf9\u6587\u4ef6 test.txt \u7684\u8bfb\u64cd\u4f5c\u3002\u5982\u679c\u6587\u4ef6\u4e0d\u5b58\u5728\uff0cfopen() \u51fd\u6570\u4f1a\u8fd4\u56de NULL\uff0c\u5f15\u53d1\u5f02\u5e38\u3002\u5f02\u5e38\u88ab\u6355\u83b7\u540e\uff0c\u7a0b\u5e8f\u4f1a\u6309\u7167 catch \u5757\u7684\u5904\u7406\u903b\u8f91\u5904\u7406\u5f02\u5e38\uff0c\u5e76\u6267\u884c finally \u5757\uff0c\u91ca\u653e\u6587\u4ef6\u8d44\u6e90\u3002<\/p>\n
\u4ee5\u4e0a\u5c31\u662fC\u8bed\u8a00\u9762\u5411\u5bf9\u8c61\u7f16\u7a0b\uff1a\u5f02\u5e38\u5904\u7406\u673a\u5236\u7684\u672c\u8d28\u4e0e\u5e94\u7528\u95ee\u7b54\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
\u5f02\u5e38\u5904\u7406\u673a\u5236\u5728 c \u8bed\u8a00\u4e2d\u901a\u8fc7 try-catch \u7ed3\u6784\u5b9e\u73b0\uff0c\u4f7f\u7a0b\u5e8f\u5728\u5f02\u5e38\u60c5\u51b5\u4e0b\u4ecd\u80fd\u7ee7\u7eed\u8fd0\u884c\u3002\u5b83\u4ee5\u7edf\u4e00\u7684\u65b9\u5f0f\u5904\u7406\u5404\u79cd\u9519\u8bef\u60c5\u51b5\uff0c\u5982\u6587\u4ef6\u8bfb\u5199\u5f02\u5e38\uff0c\u786e\u4fdd\u7a0b\u5e8f\u6b63\u5e38\u8fd0\u884c\u3002 C \u8bed\u8a00\u9762\u5411\u5bf9\u8c61\u7f16\u7a0b\uff1a\u5f02\u5e38\u5904\u7406\u673a\u5236\u7684\u672c\u8d28\u4e0e\u5e94\u7528 \u5f02\u5e38\u5904\u7406\u673a\u5236\u7684\u672c\u8d28 \u5f02\u5e38\u5904\u7406\u673a\u5236\u662f\u4e00\u79cd\u7a0b\u5e8f\u5316\u5904\u7406\u9519\u8bef\u7684\u65b9\u6cd5\uff0c\u4f7f\u7a0b\u5e8f\u5728\u5f02\u5e38\u60c5\u51b5\u4e0b\u4ecd\u80fd\u7ee7\u7eed\u8fd0\u884c\u3002C \u8bed\u8a00\u4e2d\u5f02\u5e38\u5904\u7406\u901a\u8fc7 try-catch \u7ed3\u6784\u5b9e\u73b0\u3002\u5f53\u5728 try \u5757\u4e2d\u68c0\u6d4b\u5230\u5f02\u5e38\u65f6\uff0c\u7a0b\u5e8f\u4f1a\u8df3\u8f6c\u5230\u76f8\u5e94\u7684 catch \u5757\uff0c\u4ee5\u4fbf\u5bf9\u5176\u8fdb\u884c\u5904\u7406\u3002 \u7acb\u5373\u5b66\u4e60\u201cC\u8bed\u8a00\u514d\u8d39\u5b66\u4e60\u7b14\u8bb0\uff08\u6df1\u5165\uff09\u201d\uff1b \u793a\u4f8b\u4ee3\u7801\uff1a #include <stdio.h> #include <stdlib.h> int main() { int* ptr = NULL; try { *ptr = 10; \/\/ \u6307\u9488\u672a\u521d\u59cb\u5316\uff0c\u4f1a\u5bfc\u81f4\u5f02\u5e38 } catch (int e) { printf(“\u5f02\u5e38\u5df2\u6355\u83b7\uff0c\u9519\u8bef\u4ee3\u7801\uff1a%d “, e); } return 0; }<\/stdlib.h><\/stdio.h> \u767b\u5f55\u540e\u590d\u5236 \u4e0a\u8ff0\u4ee3\u7801\u4e2d\uff0c\u5f53\u5c1d\u8bd5\u5bf9\u672a\u521d\u59cb\u5316\u7684\u6307\u9488 ptr \u8fdb\u884c\u89e3\u5f15\u7528\u65f6\uff0c\u4f1a\u89e6\u53d1\u4e00\u4e2a\u5f02\u5e38\u3002\u7a0b\u5e8f\u4f1a\u8df3\u8f6c\u5230 catch \u5757\uff0c\u6355\u83b7\u5f02\u5e38\u5e76\u6253\u5370\u9519\u8bef\u4ee3\u7801\u3002 \u5b9e\u6218\u6848\u4f8b […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-773","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/773","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=773"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/773\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=773"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=773"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=773"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}