{"id":29257,"date":"2023-01-06T14:05:30","date_gmt":"2023-01-06T08:35:30","guid":{"rendered":"https:\/\/jassweb.com\/solved\/solved-why-does-incrementing-a-pointer-work-but-treating-it-as-an-array-fail-part-2-closed\/"},"modified":"2023-01-06T14:05:30","modified_gmt":"2023-01-06T08:35:30","slug":"solved-why-does-incrementing-a-pointer-work-but-treating-it-as-an-array-fail-part-2-closed","status":"publish","type":"post","link":"https:\/\/jassweb.com\/solved\/solved-why-does-incrementing-a-pointer-work-but-treating-it-as-an-array-fail-part-2-closed\/","title":{"rendered":"[Solved] Why does incrementing a pointer work, but treating it as an array fail? Part 2 [closed]"},"content":{"rendered":"

[ad_1]
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I’m not sure what your question is, but this code probably doesn’t do what you want:<\/p>\n

printf(\"main Pointer to struct.\" EOL);\nfor (int i=0; i<count; i++)\n{\n    printf(\"index: %d  useless1: %d\" EOL, i, b->useless1);\n    printf(\"index: %d  useless2: %d\" EOL, i, b->useless2);\n    b++;\n}\nprintf(EOL);\n\nprintf(\"main Index into array of structures.\" EOL);\nfor (int i=0; i<count; i++)\n{\n    printf(\"index: %d  useless1: %d\" EOL, i, b[i].useless1);\n    printf(\"index: %d  useless2: %d\" EOL, i, b[i].useless2);\n}\nprintf(EOL);\n<\/code><\/pre>\n
The first loop changes the value of b<\/code>, so the second loop doesn’t start where you think it does.<\/p>\n
Consider something like this:<\/p>\n
type1* bOrig = b; \/\/ store the original value\nprintf(\"main Pointer to struct.\" EOL);\nfor (int i=0; i<count; i++)\n{\n    printf(\"index: %d  useless1: %d\" EOL, i, b->useless1);\n    printf(\"index: %d  useless2: %d\" EOL, i, b->useless2);\n    b++;\n}\nprintf(EOL);\nb = bOrig; \/\/ restore the original value\n\nprintf(\"main Index into array of structures.\" EOL);\nfor (int i=0; i<count; i++)\n{\n    printf(\"index: %d  useless1: %d\" EOL, i, b[i].useless1);\n    printf(\"index: %d  useless2: %d\" EOL, i, b[i].useless2);\n}\nprintf(EOL);\n<\/code><\/pre>\n<\/p><\/div>\n
<\/div>\n<\/div>\n
            3<\/span> <\/p><\/div>\n<\/div>\n
[ad_2]<\/p>\n
solved Why does incrementing a pointer work, but treating it as an array fail? Part 2 [closed] <\/p>\n","protected":false},"excerpt":{"rendered":"
[ad_1] I’m not sure what your question is, but this code probably doesn’t do what you want: printf(“main Pointer to struct.” EOL); for (int i=0; i<count; i++) { printf(“index: %d useless1: %d” EOL, i, b->useless1); printf(“index: %d useless2: %d” EOL, i, b->useless2); b++; } printf(EOL); printf(“main Index into array of structures.” EOL); for (int i=0; … 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":[361,324,712,458],"class_list":["post-29257","post","type-post","status-publish","format-standard","hentry","category-solved","tag-arrays","tag-c","tag-pointers","tag-struct"],"yoast_head":"\n[Solved] Why does incrementing a pointer work, but treating it as an array fail? Part 2 [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-why-does-incrementing-a-pointer-work-but-treating-it-as-an-array-fail-part-2-closed\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[Solved] Why does incrementing a pointer work, but treating it as an array fail? Part 2 [closed] - JassWeb\" \/>\n<meta property=\"og:description\" content=\"[ad_1] I’m not sure what your question is, but this code probably doesn’t do what you want: printf("main Pointer to struct." EOL); for (int i=0; i<count; i++) { printf("index: %d useless1: %d" EOL, i, b->useless1); printf("index: %d useless2: %d" EOL, i, b->useless2); b++; } printf(EOL); printf("main Index into array of structures." EOL); for (int i=0; ... 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