Case-insensitive string comparison in C

Question

I am trying to compare two strings to see if they are the same regardless of case. I've found a few functions. strcmp() is case sensitive but some others like stricmp() isn't in C and strcasecmp() dosen't seem to work either. Can anyone suggest a function in C which does this?

One implementation: http://cvsweb.openbsd.org/cgi-bin/cvsweb/xenocara/app/xedit/strcasecmp.c?rev=1.1&content-type=text/x-cvsweb-markup — Kusalananda, Jul 31 '16 at 13:31

score 0 · Answer 1 · edited Jul 31 '16 at 13:06

0

int iequals(const char* a, const char* b){
    unsigned int size1 = strlen(a);
    if (strlen(b) != size1)
        return 0;
    for (unsigned int i = 0; i < size1; i++)
        if (tolower(a[i]) != tolower(b[i]))
            return 0;
    return 1;
}

edited Jul 31 '16 at 13:06

anatolyg

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answered Jul 31 '16 at 13:03

Shravan40

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@anatolyg : Thank you :) – Shravan40 Jul 31 '16 at 13:08
sizeof doesn't return the length of string. But why reinvent the wheel – phuclv Jul 31 '16 at 13:14
@LưuVĩnhPhúc : Answer has already been edited. Now using `strlen()` to compute the size of string. – Shravan40 Jul 31 '16 at 13:16
1

I felt like expanding this example. http://hastebin.com/vikepileka.coffee – Dmytro Jul 31 '16 at 13:25
@Dmitry : Great work :). I should have explained that much in my function. – Shravan40 Jul 31 '16 at 13:27

Case-insensitive string comparison in C

1 Answers1