std::basic_string::find_first_of - cppreference.com

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`size_type find_first_of( const basic_string& str, size_type pos = 0 ) const;`	(1)

`size_type find_first_of( const CharT* s, size_type pos, size_type count ) const;`	(2)

`size_type find_first_of( const CharT* s, size_type pos = 0 ) const;`	(3)

`size_type find_first_of( CharT ch, size_type pos = 0 ) const;`	(4)

Trova il primo carattere uguale a uno dei personaggi della sequenza di caratteri dato. Ricerca inizia pos, vale a dire il carattere trovato non deve essere in posizione precedente pos.

Original:

Finds the first character equal to one of characters in the given character sequence. Search begins at pos, i.e. the found character must not be in position preceding pos.

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Trova il primo carattere uguale a uno dei personaggi str.

Original:

Finds the first character equal to one of characters in str.

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Trova il primo carattere uguale a uno dei personaggi nei personaggi count prima della stringa di caratteri puntato da s. s possono includere caratteri nulli.

Original:

Finds the first character equal to one of characters in the first count characters of the character string pointed to by s. s can include null characters.

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Trova il primo carattere uguale a uno dei caratteri in stringa di caratteri puntato da s. La lunghezza della stringa è determinata dal carattere null prima.

Original:

Finds the first character equal to one of characters in character string pointed to by s. The length of the string is determined by the first null character.

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Trova il primo carattere uguale a ch.

Original:

Finds the first character equal to ch.

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Parametri

str	-	stringa che identifica i caratteri da ricercare Original: string identifying characters to search for The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
pos	-	posizione in cui iniziare la ricerca Original: position at which to begin searching The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
count	-	lunghezza della stringa di caratteri che identifica i caratteri da ricercare Original: length of character string identifying characters to search for The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
s	-	puntatore a una stringa di caratteri che identifica i caratteri da ricercare Original: pointer to a character string identifying characters to search for The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
ch	-	carattere da cercare Original: character to search for The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

Valore di ritorno

posizione del carattere trovato o npos in mancanza di tale carattere, si trova.

Original:

position of the found character or npos if no such character is found.

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Eccezioni

1,4)

Note

traits::eq() viene utilizzato per eseguire il confronto.

Original:

traits::eq() is used to perform the comparison.

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Esempio

Vedi anche


find	trova la prima occorrenza di una sottostringa (metodo pubblico) [modifica]

rfind	trova l'ultima occorrenza di una sottostringa (metodo pubblico) [modifica]

find_first_not_of	trovare prima assenza di caratteri Original: find first absence of characters The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (metodo pubblico) [modifica]

find_last_of	trovare ultima occorrenza di caratteri Original: find last occurrence of characters The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (metodo pubblico) [modifica]

find_last_not_of	trovare assenza ultima di caratteri Original: find last absence of characters The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (metodo pubblico) [modifica]

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