get last char in a string
in [Visual C]
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From: Daniel on 9 Jun 2008 21:24 Using c/c++, how do I read the last char in a string and remove the last character from that string? Daniel
From: Norman Bullen on 9 Jun 2008 21:59 Daniel wrote: > Using c/c++, how do I read the last char in a string and remove the last > character from that string? > > Daniel > > Echoing comments from the other thread which you started: you need to be more specific about the language that you're using. Strings are different in C and C++. In C you find the length of a string with strlen(). Since a string is simple an array of characters (str[], for example), the NUL character that terminates the string follows that length of characters; it is at str[strlen(str)]. The last non-NUL character is a str[strlen(str)-1]. And you can remove the last character from a string by setting str[strlen(str)-1] to NUL. -- Norm To reply, change domain to an adult feline.
From: Giovanni Dicanio on 10 Jun 2008 05:51 "Daniel" <Mahonri(a)cableone.net> ha scritto nel messaggio news:uTaMLjpyIHA.3628(a)TK2MSFTNGP05.phx.gbl... > Using c/c++, how do I read the last char in a string and remove the last > character from that string? TCHAR * str; // Get last character (assuming non-empty string!) TCHAR lastChar = str[ _tcslen( str ) - 1 ]; // Remove last character : replace it with \0 str[ _tcslen( str ) - 1 ] = _T('\0' ); This works for both ANSI/MBCS and Unicode strings. HTH, Giovanni
From: Daniel on 10 Jun 2008 21:39 I was able to do as you prescribed. Now how do I concatenate the single char value defined as char to the end of a string defined as char str[10]? Daniel "Norman Bullen" <norm(a)BlackKittenAssociates.com> wrote in message news:5sWdnXFOdMX8QdDVnZ2dnUVZ_jCdnZ2d(a)earthlink.com... > Daniel wrote: > >> Using c/c++, how do I read the last char in a string and remove the last >> character from that string? >> >> Daniel > Echoing comments from the other thread which you started: you need to be > more specific about the language that you're using. Strings are different > in C and C++. > > In C you find the length of a string with strlen(). Since a string is > simple an array of characters (str[], for example), the NUL character that > terminates the string follows that length of characters; it is at > str[strlen(str)]. The last non-NUL character is a str[strlen(str)-1]. And > you can remove the last character from a string by setting > str[strlen(str)-1] to NUL. > > -- > Norm > > To reply, change domain to an adult feline. >
From: David Wilkinson on 10 Jun 2008 23:26
Daniel wrote: > I was able to do as you prescribed. Now how do I concatenate the single > char value defined as char to the end of a string defined as char str[10]? aniel: What is already in this char[10]? Maybe there is no room for another character, and to try to add one could cause a buffer overrun. Much better to use std::string (or CString): char c = '!'; std::string str = "Hello World"; str += c; assert(str == "Hello World!"); -- David Wilkinson Visual C++ MVP |