{"id":4389,"date":"2022-08-22T15:19:02","date_gmt":"2022-08-22T09:49:02","guid":{"rendered":"https:\/\/jassweb.com\/solved\/solved-c-and-c-data-file-with-error-expected-unqualified-id-closed\/"},"modified":"2022-08-22T15:19:02","modified_gmt":"2022-08-22T09:49:02","slug":"solved-c-and-c-data-file-with-error-expected-unqualified-id-closed","status":"publish","type":"post","link":"https:\/\/jassweb.com\/solved\/solved-c-and-c-data-file-with-error-expected-unqualified-id-closed\/","title":{"rendered":"[Solved] C and C++ : data file with error “Expected unqualified-id” [closed]"},"content":{"rendered":"

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OP here. These are the steps I took to resolve my issue, based on the last edit of my question:<\/p>\n

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  1. With the separate files, as given in my question, the error was Expected identifier<\/code> in mscmix_dat.c<\/code>. <\/li>\n
  2. Per @LightnessRacesinOrbit’s suggestion, I consolidated the multiple main.cpp, msclib.h, msclib.c, and mscmix_dat.c files into two files: main.cpp and msclib.c, by replacing the #include thisfile.c<\/code> with the actual file code content. I also changed msclib.c to .cpp via simple rename. This eliminated the original error of Expected identifier<\/code>, but a new one arose.<\/li>\n
  3. Compiling the two files gave multiple errors in msclib.cpp<\/code>, all wrt variable type conversions.<\/li>\n
  4. Because of C++ differences from C, I handled the type conversion issue via casting, but also respecting const<\/code>. <\/li>\n<\/ol>\n

    Below is my final, successfully compiling code.<\/p>\n

    \/\/ **** main.cpp ****\n#include <stdio.h>\n#include <stdlib.h>\n#include <assert.h>\n#include <limits.h>\n#include <unistd.h>\n#include <fcntl.h>\n#include <string.h>\n#include <ctype.h>\n\n#include<string>\n#include<iostream>\nusing namespace std;\n\nextern size_t msc_get_no(const char*);\n\nint main(int argc, char** argv)\n{\n    assert(argc >= 0);\n    return (int)msc_get_no(argv[1]); \/\/ casting\n\n}\n\n\/\/ **** msclib.cpp ****\n#include <stdio.h>\n#include <stdlib.h>\n#include <assert.h>\n#include <string.h>\n#include <ctype.h>\n\nextern size_t msc_get_no(const char*);\n\nstruct msc_data\n{\n   const char* code;\n   const char* desc;\n};\n\ntypedef struct msc_data MSCDat;\n\nstatic const MSCDat mscdat[] =\n{\n    { \"*****\", \"Error\" },\n    { \"00-01\", \"Instructional exposition (textbooks, tutorial papers, etc.)\" },\n    { \"00-02\", \"Research exposition (monographs, survey articles)\" },\n    { \"00A05\", \"General mathematics\" }\n}\n   ;\n\nstatic const size_t msccnt = sizeof(mscdat) \/ sizeof(mscdat[0]);\n\nstatic int msc_cmp(const void* a, const void* b)\n{\n   const char*   msc_code = static_cast<const char*>(a); \/\/<----\n   const MSCDat* p        = static_cast<const MSCDat*>(b); \/\/ (const MSCDat*)b also works\n   return strcmp(msc_code, p->code);\n}\n\n\nsize_t msc_get_no(const char* msc_code)\n{\n   assert(NULL != msc_code);\n   assert(strlen(msc_code) == 5);\n\n    MSCDat* p; \/\/ changed initialization of p\n   p = (MSCDat*) bsearch(msc_code, &mscdat[0], msccnt, sizeof(mscdat[0]), msc_cmp);\n\n   if (NULL == p)\n   {\n      fprintf(stderr, \"MSC \\\"%s\\\" not valid\\n\", msc_code);\n      return 0;\n   }\n\n   assert(NULL != p);\n   return p - &mscdat[0];\n}\n<\/code><\/pre>\n<\/p><\/div>\n
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    solved C and C++ : data file with error “Expected unqualified-id” [closed] <\/p>\n","protected":false},"excerpt":{"rendered":"
    [ad_1] OP here. These are the steps I took to resolve my issue, based on the last edit of my question: With the separate files, as given in my question, the error was Expected identifier in mscmix_dat.c. Per @LightnessRacesinOrbit’s suggestion, I consolidated the multiple main.cpp, msclib.h, msclib.c, and mscmix_dat.c files into two files: main.cpp and … Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[320],"tags":[324,820],"class_list":["post-4389","post","type-post","status-publish","format-standard","hentry","category-solved","tag-c","tag-data-files"],"yoast_head":"\n[Solved] C and C++ : data file with error "Expected unqualified-id" [closed] - JassWeb<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/jassweb.com\/solved\/solved-c-and-c-data-file-with-error-expected-unqualified-id-closed\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[Solved] C and C++ : data file with error "Expected unqualified-id" [closed] - JassWeb\" \/>\n<meta property=\"og:description\" content=\"[ad_1] OP here. These are the steps I took to resolve my issue, based on the last edit of my question: With the separate files, as given in my question, the error was Expected identifier in mscmix_dat.c. Per @LightnessRacesinOrbit’s suggestion, I consolidated the multiple main.cpp, msclib.h, msclib.c, and mscmix_dat.c files into two files: main.cpp and ... 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These are the steps I took to resolve my issue, based on the last edit of my question: With the separate files, as given in my question, the error was Expected identifier in mscmix_dat.c. Per @LightnessRacesinOrbit’s suggestion, I consolidated the multiple main.cpp, msclib.h, msclib.c, and mscmix_dat.c files into two files: main.cpp and ... 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