{"id":19739,"date":"2022-11-07T15:08:05","date_gmt":"2022-11-07T09:38:05","guid":{"rendered":"https:\/\/jassweb.com\/solved\/solved-removing-digits-and-all-punctuation-except-apostrophe-from-a-string-in-c\/"},"modified":"2022-11-07T15:08:05","modified_gmt":"2022-11-07T09:38:05","slug":"solved-removing-digits-and-all-punctuation-except-apostrophe-from-a-string-in-c","status":"publish","type":"post","link":"https:\/\/jassweb.com\/solved\/solved-removing-digits-and-all-punctuation-except-apostrophe-from-a-string-in-c\/","title":{"rendered":"[Solved] Removing digits and all punctuation except apostrophe from a string in C"},"content":{"rendered":"

[ad_1]
\n<\/p>\n

\n
\n
<\/div>\n
\n
\n

You are confusing strings and characters. A character literal is enclosed in '<\/code>. A string literal is enclosed in \"<\/code> and is an array of characters.<\/p>\n

e.g.:<\/p>\n

\"This is a string literal\"\n'c' \/\/ this is character\n<\/code><\/pre>\n
To test if a char is not z<\/code> for instance, you write:<\/p>\n
char c = ...;    \nif (c == 'z')\n<\/code><\/pre>\n
For special characters, like '<\/code>, new line, tab etc. you have to escape them like this:<\/p>\n
char c1 = '\\'' \/\/ this is a ' character\nchar c2 = '\\t' \/\/ this is a tab character\n<\/code><\/pre>\n
strcpm<\/code> is for comparing strings. If you want to compare characters, ==<\/code> are what you need, as I’ve shown above.<\/p>\n
\n
Your function can be written simply as this:<\/p>\n
int strip(char* str)\n{\n    int from, to;       \n    for (from = 0, to = 0; str[from] != '\\0'; ++from) {\n        if (!isdigit(str[from]) && (!ispunct(str[from]) || str[from] == '\\'')) {\n            str[to] = tolower(str[from]);\n            ++to;\n        }\n    }\n    str[to] = '\\0';\n}\n<\/code><\/pre>\n
example input and output:<\/p>\n
int main(void)\n{\n    char str[] = \"This is 'Sparta'! The 200. I ,think,\";\n    strip(str);\n    printf(\"%s\\n\", str);\n    return 0;\n}\n<\/code><\/pre>\n
output:<\/p>\n
this is 'sparta' the  i think\n<\/code><\/pre>\n<\/p><\/div>\n
<\/div>\n<\/div>\n
            <\/span> <\/p><\/div>\n<\/div>\n
[ad_2]<\/p>\n
solved Removing digits and all punctuation except apostrophe from a string in C <\/p>\n","protected":false},"excerpt":{"rendered":"
[ad_1] You are confusing strings and characters. A character literal is enclosed in ‘. A string literal is enclosed in ” and is an array of characters. e.g.: “This is a string literal” ‘c’ \/\/ this is character To test if a char is not z for instance, you write: char c = …; if … 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":[324,472,362],"class_list":["post-19739","post","type-post","status-publish","format-standard","hentry","category-solved","tag-c","tag-char","tag-string"],"yoast_head":"\n[Solved] Removing digits and all punctuation except apostrophe from a string in C - 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-removing-digits-and-all-punctuation-except-apostrophe-from-a-string-in-c\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[Solved] Removing digits and all punctuation except apostrophe from a string in C - JassWeb\" \/>\n<meta property=\"og:description\" content=\"[ad_1] You are confusing strings and characters. A character literal is enclosed in '. A string literal is enclosed in " and is an array of characters. e.g.: "This is a string literal" 'c' \/\/ this is character To test if a char is not z for instance, you write: char c = ...; if ... 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