Découper une chaine de caractères en fonction d'un séparateur

Question

Bonjour,

J'aimerais savoir s'il existe un moyen assez simple de découper une chaine de la manière suivante:

chaine=ssch1;ssch2;ssch3;.....

Je voudrais donc isoler les sschi entre chaque ";".

En PHP il y a explode qui permet de faire ca très simplement (ca génère un tableau t dont chaque t[i] contient une sous-chaine) mais je ne sais pas s'il existe une équivalence en c++

Je développe sous VC++6 avec les MFC, et ma variable chaine est une CString

Merci à tous.

vecchio56 · Answer

moi j'utiliserait les string de la stl et la méthode getline te permet de spécifier le séparateur qui te convient

cs_pheno · Answer

en C tu as strtok aussi voila l aide de la msdn @+++ strtok, wcstok, _mbstok Find the next token in a string. char *strtok( char *strToken, const char *strDelimit ); wchar_t *wcstok( wchar_t *strToken, const wchar_t *strDelimit ); unsigned char *_mbstok( unsigned char*strToken, const unsigned char *strDelimit ); Routine Required Header Compatibility strtok ANSI, Win 95, Win NT wcstok or ANSI, Win 95, Win NT _mbstok Win 95, Win NT For additional compatibility information, see Compatibility in the Introduction. Libraries LIBC.LIB Single thread static library, retail version LIBCMT.LIB Multithread static library, retail version MSVCRT.LIB Import library for MSVCRT.DLL, retail version Return Value All of these functions return a pointer to the next token found in strToken. They return NULL when no more tokens are found. Each call modifies strToken by substituting a NULL character for each delimiter that is encountered. Parameters strToken String containing token(s) strDelimit Set of delimiter characters Remarks The strtok function finds the next token in strToken. The set of characters in strDelimit specifies possible delimiters of the token to be found in strToken on the current call. wcstok and _mbstok are wide-character and multibyte-character versions of strtok. The arguments and return value of wcstok are wide-character strings; those of _mbstok are multibyte-character strings. These three functions behave identically otherwise. Generic-Text Routine Mappings TCHAR.H Routine _UNICODE & _MBCS Not Defined _MBCS Defined _UNICODE Defined _tcstok strtok _mbstok wcstok On the first call to strtok, the function skips leading delimiters and returns a pointer to the first token in strToken, terminating the token with a null character. More tokens can be broken out of the remainder of strToken by a series of calls to strtok. Each call to strtok modifies strToken by inserting a null character after the token returned by that call. To read the next token from strToken, call strtok with a NULL value for the strToken argument. The NULL strToken argument causes strtok to search for the next token in the modified strToken. The strDelimit argument can take any value from one call to the next so that the set of delimiters may vary. Warning Each of these functions uses a static variable for parsing the string into tokens. If multiple or simultaneous calls are made to the same function, a high potential for data corruption and inaccurate results exists. Therefore, do not attempt to call the same function simultaneously for different strings and be aware of calling one of these function from within a loop where another routine may be called that uses the same function. However, calling this function simultaneously from multiple threads does not have undesirable effects. Example /* STRTOK.C: In this program, a loop uses strtok * to print all the tokens (separated by commas * or blanks) in the string named "string". */ #include #include char string[] = "A string of ,,tokens and some more tokens"; char seps[] = " , "; char *token; void main( void ) { printf( "%s Tokens: ", string ); /* Establish string and get the first token: */ token = strtok( string, seps ); while( token != NULL ) { /* While there are tokens in "string" */ printf( " %s ", token ); /* Get next token: */ token = strtok( NULL, seps ); } } Output A string of ,,tokens and some more tokens Tokens: A string of tokens and some more tokens String Manipulation Routines See Also strcspn, strspn, setlocale Chevalier Pheno Starboard, membre de la Freeman-Corp

cs_julien20vt · Answer

Merci,

J'ai effectivement utilisé strtok.

Découper une chaine de caractères en fonction d'un séparateur

3 réponses

Votre réponse

Discussions similaires