Compare language special character

In other languages no English it is common to have a special character such as ñ in Spanish.

I have recently found myself wondering how can you compare two char such temporal == 'ñ'? Or temporal == char(-94) I have tried both and no one looks like working

edited Nov 29 '18 at 4:51

GYaN

2,09731432

asked Nov 29 '18 at 0:27

Yunhao

136

2

The char type can be signed, unsigned or char. If signed, there may not be enough range for special characters. You may need to invest in wide characters or 16-bit values to represent the characters. Search the internet for "c++ wide characters" or "c++ multibyte characters".

– Thomas Matthews
Nov 29 '18 at 0:48

4

With ñ you need to understand what character set you're using. Likely one of these en.wikipedia.org/wiki/%C3%91 . Some representations of it take up two bytes. There's also 164 in the old "standard" extended ascii table, which is no longer standard, if it ever was, and there's "code pages" which replace it but have also fallen out of favor.

– zzxyz
Nov 29 '18 at 0:50

Why do you need to compare individual characters, or in general access individual characters of a string? It is almost never needed for non-text-processing applications. There is nothing special in these characters BTW.

– n.m.
Nov 29 '18 at 4:54

i need to process a spanish text, and implements a letter counter

– Yunhao
Nov 29 '18 at 10:49

Is this a school assignment? You should know that in Unicode accented characters can be represented in more than one way. First, as a letter followed by a separate combining accent character; and second, as a single pre-composed accented character. (Each character may occupy more than one byte). This may or may not be relevant for letter count, but it may break your word count if you are not careful.

– n.m.
Nov 29 '18 at 12:49

|
show 6 more comments

In other languages no English it is common to have a special character such as ñ in Spanish.

I have recently found myself wondering how can you compare two char such temporal == 'ñ'? Or temporal == char(-94) I have tried both and no one looks like working

edited Nov 29 '18 at 4:51

GYaN

2,09731432

asked Nov 29 '18 at 0:27

Yunhao

136

2

The char type can be signed, unsigned or char. If signed, there may not be enough range for special characters. You may need to invest in wide characters or 16-bit values to represent the characters. Search the internet for "c++ wide characters" or "c++ multibyte characters".

– Thomas Matthews
Nov 29 '18 at 0:48

4

With ñ you need to understand what character set you're using. Likely one of these en.wikipedia.org/wiki/%C3%91 . Some representations of it take up two bytes. There's also 164 in the old "standard" extended ascii table, which is no longer standard, if it ever was, and there's "code pages" which replace it but have also fallen out of favor.

– zzxyz
Nov 29 '18 at 0:50

Why do you need to compare individual characters, or in general access individual characters of a string? It is almost never needed for non-text-processing applications. There is nothing special in these characters BTW.

– n.m.
Nov 29 '18 at 4:54

i need to process a spanish text, and implements a letter counter

– Yunhao
Nov 29 '18 at 10:49

Is this a school assignment? You should know that in Unicode accented characters can be represented in more than one way. First, as a letter followed by a separate combining accent character; and second, as a single pre-composed accented character. (Each character may occupy more than one byte). This may or may not be relevant for letter count, but it may break your word count if you are not careful.

– n.m.
Nov 29 '18 at 12:49

|
show 6 more comments

In other languages no English it is common to have a special character such as ñ in Spanish.

I have recently found myself wondering how can you compare two char such temporal == 'ñ'? Or temporal == char(-94) I have tried both and no one looks like working

edited Nov 29 '18 at 4:51

GYaN

2,09731432

asked Nov 29 '18 at 0:27

Yunhao

136

In other languages no English it is common to have a special character such as ñ in Spanish.

I have recently found myself wondering how can you compare two char such temporal == 'ñ'? Or temporal == char(-94) I have tried both and no one looks like working

c++

edited Nov 29 '18 at 4:51

GYaN

2,09731432

asked Nov 29 '18 at 0:27

Yunhao

136

edited Nov 29 '18 at 4:51

GYaN

2,09731432

asked Nov 29 '18 at 0:27

Yunhao

136

edited Nov 29 '18 at 4:51

GYaN

2,09731432

edited Nov 29 '18 at 4:51

GYaN

2,09731432

edited Nov 29 '18 at 4:51

GYaN

2,09731432

asked Nov 29 '18 at 0:27

Yunhao

136

asked Nov 29 '18 at 0:27

Yunhao

136

asked Nov 29 '18 at 0:27

Yunhao

136

2

The char type can be signed, unsigned or char. If signed, there may not be enough range for special characters. You may need to invest in wide characters or 16-bit values to represent the characters. Search the internet for "c++ wide characters" or "c++ multibyte characters".

– Thomas Matthews
Nov 29 '18 at 0:48

4

With ñ you need to understand what character set you're using. Likely one of these en.wikipedia.org/wiki/%C3%91 . Some representations of it take up two bytes. There's also 164 in the old "standard" extended ascii table, which is no longer standard, if it ever was, and there's "code pages" which replace it but have also fallen out of favor.

– zzxyz
Nov 29 '18 at 0:50

Why do you need to compare individual characters, or in general access individual characters of a string? It is almost never needed for non-text-processing applications. There is nothing special in these characters BTW.

– n.m.
Nov 29 '18 at 4:54

i need to process a spanish text, and implements a letter counter

– Yunhao
Nov 29 '18 at 10:49

Is this a school assignment? You should know that in Unicode accented characters can be represented in more than one way. First, as a letter followed by a separate combining accent character; and second, as a single pre-composed accented character. (Each character may occupy more than one byte). This may or may not be relevant for letter count, but it may break your word count if you are not careful.

– n.m.
Nov 29 '18 at 12:49

|
show 6 more comments

2

The char type can be signed, unsigned or char. If signed, there may not be enough range for special characters. You may need to invest in wide characters or 16-bit values to represent the characters. Search the internet for "c++ wide characters" or "c++ multibyte characters".

– Thomas Matthews
Nov 29 '18 at 0:48

4

With ñ you need to understand what character set you're using. Likely one of these en.wikipedia.org/wiki/%C3%91 . Some representations of it take up two bytes. There's also 164 in the old "standard" extended ascii table, which is no longer standard, if it ever was, and there's "code pages" which replace it but have also fallen out of favor.

– zzxyz
Nov 29 '18 at 0:50

Why do you need to compare individual characters, or in general access individual characters of a string? It is almost never needed for non-text-processing applications. There is nothing special in these characters BTW.

– n.m.
Nov 29 '18 at 4:54

i need to process a spanish text, and implements a letter counter

– Yunhao
Nov 29 '18 at 10:49

Is this a school assignment? You should know that in Unicode accented characters can be represented in more than one way. First, as a letter followed by a separate combining accent character; and second, as a single pre-composed accented character. (Each character may occupy more than one byte). This may or may not be relevant for letter count, but it may break your word count if you are not careful.

– n.m.
Nov 29 '18 at 12:49

The char type can be signed, unsigned or char. If signed, there may not be enough range for special characters. You may need to invest in wide characters or 16-bit values to represent the characters. Search the internet for "c++ wide characters" or "c++ multibyte characters".

– Thomas Matthews
Nov 29 '18 at 0:48

With ñ you need to understand what character set you're using. Likely one of these en.wikipedia.org/wiki/%C3%91 . Some representations of it take up two bytes. There's also 164 in the old "standard" extended ascii table, which is no longer standard, if it ever was, and there's "code pages" which replace it but have also fallen out of favor.

– zzxyz
Nov 29 '18 at 0:50

Why do you need to compare individual characters, or in general access individual characters of a string? It is almost never needed for non-text-processing applications. There is nothing special in these characters BTW.

– n.m.
Nov 29 '18 at 4:54

i need to process a spanish text, and implements a letter counter

– Yunhao
Nov 29 '18 at 10:49

Is this a school assignment? You should know that in Unicode accented characters can be represented in more than one way. First, as a letter followed by a separate combining accent character; and second, as a single pre-composed accented character. (Each character may occupy more than one byte). This may or may not be relevant for letter count, but it may break your word count if you are not careful.

– n.m.
Nov 29 '18 at 12:49

|
show 6 more comments

1 Answer
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I figure your most likely scenario is you get to choose the character set, and you have a console app. If not, the only thing you'll want to pay attention to is the first sentence, and the L in front of strings in the code. And wchar_t being your character type..

Make sure the project properties under General are set to "Use Unicode Character Set". And also I'd forgotten a little trick with console apps. You have to set the console mode to unicode for some bizarre reason (probably backward compatibility). With UI apps, this is a non-issue.

#include <fcntl.h>

#include <io.h>

...

          _setmode(_fileno(stdout), _O_U16TEXT); //use utf-16, like every other Windows system defaults to

          _setmode(_fileno(stdin), _O_U16TEXT);

          wchar_t n = 0x00f1;  //see https://www.fileformat.info/info/charset/UTF-16/list.htm

          _tprintf(L"%cn", n); //(or use wprintf explicitly)

          _tprintf(L"ññññññññññn");

          wcout << L"ñn";

I hope this is at least a little helpful.

answered Dec 3 '18 at 20:17

zzxyz

2,2291725

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#include <fcntl.h>

#include <io.h>

...

          _setmode(_fileno(stdout), _O_U16TEXT); //use utf-16, like every other Windows system defaults to

          _setmode(_fileno(stdin), _O_U16TEXT);

          wchar_t n = 0x00f1;  //see https://www.fileformat.info/info/charset/UTF-16/list.htm

          _tprintf(L"%cn", n); //(or use wprintf explicitly)

          _tprintf(L"ññññññññññn");

          wcout << L"ñn";

I hope this is at least a little helpful.

answered Dec 3 '18 at 20:17

zzxyz

2,2291725

add a comment |

#include <fcntl.h>

#include <io.h>

...

          _setmode(_fileno(stdout), _O_U16TEXT); //use utf-16, like every other Windows system defaults to

          _setmode(_fileno(stdin), _O_U16TEXT);

          wchar_t n = 0x00f1;  //see https://www.fileformat.info/info/charset/UTF-16/list.htm

          _tprintf(L"%cn", n); //(or use wprintf explicitly)

          _tprintf(L"ññññññññññn");

          wcout << L"ñn";

I hope this is at least a little helpful.

answered Dec 3 '18 at 20:17

zzxyz

2,2291725

add a comment |

#include <fcntl.h>

#include <io.h>

...

          _setmode(_fileno(stdout), _O_U16TEXT); //use utf-16, like every other Windows system defaults to

          _setmode(_fileno(stdin), _O_U16TEXT);

          wchar_t n = 0x00f1;  //see https://www.fileformat.info/info/charset/UTF-16/list.htm

          _tprintf(L"%cn", n); //(or use wprintf explicitly)

          _tprintf(L"ññññññññññn");

          wcout << L"ñn";

I hope this is at least a little helpful.

answered Dec 3 '18 at 20:17

zzxyz

2,2291725

#include <fcntl.h>

#include <io.h>

...

          _setmode(_fileno(stdout), _O_U16TEXT); //use utf-16, like every other Windows system defaults to

          _setmode(_fileno(stdin), _O_U16TEXT);

          wchar_t n = 0x00f1;  //see https://www.fileformat.info/info/charset/UTF-16/list.htm

          _tprintf(L"%cn", n); //(or use wprintf explicitly)

          _tprintf(L"ññññññññññn");

          wcout << L"ñn";

I hope this is at least a little helpful.

answered Dec 3 '18 at 20:17

zzxyz

2,2291725

answered Dec 3 '18 at 20:17

zzxyz

2,2291725

answered Dec 3 '18 at 20:17

zzxyz

2,2291725

answered Dec 3 '18 at 20:17

zzxyz

2,2291725

add a comment |

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