{"topic":{"id":13745,"title":"请问，我代码这样写哪里错了？(c 语言)","slug":"topic","categoryId":4,"createdAt":"2024-10-24 00:57:02.277338","bumpedAt":"2024-10-26 07:47:04.552036","views":200,"postsCount":5,"highestPostNumber":5,"likeCount":2,"closed":false,"pinned":false,"excerpt":"求助，我代码这样写哪里错了: #include <stdio.h> #include <stdbool.h> int main(void) { char input[1000]; int currentnumber = 0,result = 0; bool error = false; char lastOp = '+'; int i = 0; fgets(input, sizeof(input), stdin)…","deletedAt":null,"isAnonymous":false,"category":{"id":4,"name":"谈笑风生","slug":"general","color":"25AAE2"},"author":{"id":5797,"username":"dither","name":null,"avatarUrl":null},"tags":[]},"posts":[{"id":41993,"postNumber":1,"raw":"[grid mode=\"tile\"]\n![image|689x206](/uploads/image/11/bd/11bd744669c0354175c6282785ba2d6be6ab0b28126810b889ad583612bc6ac3.avif)\n![image.png](/uploads/image/22/b5/22b57ce9c99e81c1568370a3131f3be3c45520575ac35f03a5af98df63e4185e.avif)\n[/grid]\n\n\n求助，我代码这样写哪里错了:\n``` c\n#include \n#include \nint main(void) {\n char input[1000];\n int currentnumber = 0,result = 0;\n bool error = false;\n char lastOp = '+';\n int i = 0;\n fgets(input, sizeof(input), stdin);\n while(input[i] != '\\0') {\n if(input[i] >= '0' && input[i] <= '9') {\n currentnumber = currentnumber*10 + (input[i] - '0');\n }else {\n switch(lastOp) {\n case '+':\n result += currentnumber;\n break;\n case '-':\n result -= currentnumber;\n break;\n case '*':\n result *= currentnumber;\n break;\n case '/':\n if(currentnumber != 0) {\n result /= currentnumber;\n }else {\n error = true;\n }\n break;\n case '=':\n printf(\"%d\\n\", result);\n return 0;\n default:\n error = true;\n break;\n }\n currentnumber = 0;\n lastOp = input[i];\n }\n if(error) {\n printf(\"Error\\n\");\n return 1;\n }\n i++;\n\n }\n\n return 0;\n}\n```","cooked":"

$\"image|689x206\"$
\n $\"image.png\"$

求助，我代码这样写哪里错了:

#include <stdio.h>\n#include <stdbool.h>\nint main(void) {\n    char input[1000];\n    int currentnumber = 0,result = 0;\n    bool error = false;\n    char lastOp = '+';\n    int i = 0;\n    fgets(input, sizeof(input), stdin);\n    while(input[i] != '\\0') {\n        if(input[i] >= '0' && input[i] <= '9') {\n            currentnumber = currentnumber*10 + (input[i] - '0');\n        }else {\n            switch(lastOp) {\n                case '+':\n                    result += currentnumber;\n                break;\n                case '-':\n                    result -= currentnumber;\n                break;\n                case '*':\n                    result *= currentnumber;\n                break;\n                case '/':\n                    if(currentnumber != 0) {\n                        result /= currentnumber;\n                    }else {\n                        error = true;\n                    }\n                break;\n                case '=':\n                    printf(\"%d\\n\", result);\n                    return 0;\n                default:\n                    error = true;\n                break;\n            }\n            currentnumber = 0;\n            lastOp = input[i];\n        }\n        if(error) {\n            printf(\"Error\\n\");\n            return 1;\n        }\n        i++;\n\n    }\n\n    return 0;\n}\n

\n","createdAt":"2024-10-24 00:57:02.500778","updatedAt":"2024-10-24 01:03:35.200202","replyToPostNumber":null,"replyCount":0,"likeCount":0,"wordCount":139,"liked":false,"bookmarked":false,"polls":[],"reactions":[],"wiki":false,"version":3,"publicVersion":3,"deletedAt":null,"isAnonymous":false,"user":{"id":5797,"username":"dither","name":null,"avatarUrl":null,"admin":false,"moderator":false,"signatureRaw":null,"signatureCooked":null}},{"id":42013,"postNumber":2,"raw":"lz 可以学学用 IDE 的 debug 功能或者用 gdb 来 debug. 在程序运行过程中追踪你觉得可能会出错的变量，看看和自己预期的结果是否一致。\n\n或者可以让 gpt 帮你写一个程序，看看你们写的哪不一样","cooked":"

lz 可以学学用 IDE 的 debug 功能或者用 gdb 来 debug. 在程序运行过程中追踪你觉得可能会出错的变量，看看和自己预期的结果是否一致。

或者可以让 gpt 帮你写一个程序，看看你们写的哪不一样

\n","createdAt":"2024-10-24 09:35:50.307355","updatedAt":"2024-10-24 09:43:57.679882","replyToPostNumber":null,"replyCount":0,"likeCount":0,"wordCount":78,"liked":false,"bookmarked":false,"polls":[],"reactions":[],"wiki":false,"version":2,"publicVersion":2,"deletedAt":null,"isAnonymous":false,"user":{"id":3003,"username":"welldown","name":"Jerry","avatarUrl":"/uploads/image/b4/34/b434e1422e6a5736b8e598d3934d14be8d8de7b269f2899e586a89b3030ce1f5.avif","admin":false,"moderator":false,"signatureRaw":null,"signatureCooked":null}},{"id":42071,"postNumber":3,"raw":"显然，43 行 return 1 应当改成 return 0（","cooked":"

显然，43 行 return 1 应当改成 return 0（

\n","createdAt":"2024-10-26 05:29:51.421959","updatedAt":"2024-10-26 05:29:51.421959","replyToPostNumber":null,"replyCount":0,"likeCount":2,"wordCount":12,"liked":false,"bookmarked":false,"polls":[],"reactions":[{"reaction":"👍️","count":2,"users":[{"id":5150,"username":"CAIMEOX","name":"CAIMEO X"},{"id":5797,"username":"dither","name":null}],"hasReacted":false},{"reaction":"❤️","count":2,"users":[{"id":5150,"username":"CAIMEOX","name":"CAIMEO X"},{"id":5797,"username":"dither","name":null}],"hasReacted":false}],"wiki":false,"version":1,"publicVersion":1,"deletedAt":null,"isAnonymous":false,"user":{"id":3317,"username":"martian","name":"martian","avatarUrl":"/uploads/image/3f/c8/3fc841ba4288eecd825298ff59d4215b07725361914e0c787f414d86b63827c8.avif","admin":false,"moderator":false,"signatureRaw":null,"signatureCooked":null}},{"id":42072,"postNumber":4,"raw":"人生苦短我用 python\n```\nprint(eval(input()[:-1]))\n```","cooked":"

人生苦短我用 python

print(eval(input()[:-1]))\n

\n","createdAt":"2024-10-26 07:37:29.861193","updatedAt":"2024-10-26 07:54:18.880234","replyToPostNumber":null,"replyCount":0,"likeCount":0,"wordCount":10,"liked":false,"bookmarked":false,"polls":[],"reactions":[],"wiki":false,"version":2,"publicVersion":2,"deletedAt":null,"isAnonymous":false,"user":{"id":3332,"username":"rijin","name":"\");drop table;--","avatarUrl":"/uploads/image/15/08/1508edf65e93ff68a1c8ade6ba2e6a7c2d99ac7a98226d65eda73bc238ffb86a.avif","admin":false,"moderator":false,"signatureRaw":null,"signatureCooked":null}},{"id":42073,"postNumber":5,"raw":"鼠鼠眼神可能不太好，没见到判断算符优先级的代码逻辑。俺之前写了一段，可以参考参考，用的是算符优先级算法判断运算过程\n[实验三：C 语言实现直观算符优先分析法.pdf|attachment](/uploads/pdf/de/cd/decd37ff2d701cb24673dedb0465b5945c194fe7e78ed19e9e520b0911bd84fb.pdf) (312.4 KB)","cooked":"

鼠鼠眼神可能不太好，没见到判断算符优先级的代码逻辑。俺之前写了一段，可以参考参考，用的是算符优先级算法判断运算过程
\n实验三：C 语言实现直观算符优先分析法.pdf|attachment (312.4 KB)

\n","createdAt":"2024-10-26 07:47:04.552036","updatedAt":"2024-10-26 07:47:04.552036","replyToPostNumber":null,"replyCount":0,"likeCount":0,"wordCount":78,"liked":false,"bookmarked":false,"polls":[],"reactions":[],"wiki":false,"version":1,"publicVersion":1,"deletedAt":null,"isAnonymous":false,"user":{"id":3332,"username":"rijin","name":"\");drop table;--","avatarUrl":"/uploads/image/15/08/1508edf65e93ff68a1c8ade6ba2e6a7c2d99ac7a98226d65eda73bc238ffb86a.avif","admin":false,"moderator":false,"signatureRaw":null,"signatureCooked":null}}],"hasMore":false,"lastReadPostNumber":2,"hasUrlPostNumber":true}