strstr
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| definiert in Header <string.h>
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| const char *strstr( const char* str, const char* substr ); |
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| char strstr( char* str, const char* substr ); |
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Sucht das erste Vorkommen des Byte-String
substr in der Byte-String, auf den str . Original:
Finds the first occurrence of the byte string
substr in the byte string pointed to by str. The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
You can help to correct and verify the translation. Click here for instructions.
Inhaltsverzeichnis |
[Bearbeiten] Parameter
| str | - | Zeiger auf die null-terminierte Byte-String zu prüfen
Original: pointer to the null-terminated byte string to examine The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. |
| substr | - | Zeiger auf die null-terminierte Byte-String zu suchen
Original: pointer to the null-terminated byte string 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. |
[Bearbeiten] Rückgabewert
Zeiger auf das erste Zeichen des gefundenen Substing
str oder NULL wenn kein solches Teilstring gefunden. Wenn substr weist auf einen leeren String, wird str zurückgegeben .Original:
Pointer to the first character of the found substring in
str, or NULL if no such substring is found. If substr points to an empty string, str is returned.The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
You can help to correct and verify the translation. Click here for instructions.
[Bearbeiten] Beispiel
#include <string.h> #include <stdio.h> void find_str(char const* str, char const* substr) { char* pos = strstr(str, substr); if(pos) { printf("found the string '%s' in '%s' at position: %d\n", substr, str, pos - str); } else { printf("the string '%s' was not found in '%s'\n", substr, str); } } int main(int argc, char* argv[]) { char* str = "one two three"; find_str(str, "two"); find_str(str, ""); find_str(str, "nine"); find_str(str, "n"); return 0; }
Output:
found the string 'two' in 'one two three' at position: 4 found the string '' in 'one two three' at position: 0 the string 'nine' was not found in 'one two three' found the string 'n' in 'one two three' at position: 1
[Bearbeiten] Siehe auch
| findet das erste Vorkommen eines Zeichens Original: finds the first occurrence of a character The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (Funktion) | |
| wird das letzte Vorkommen eines Zeichens Original: finds the last occurrence of a character The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (Funktion) | |
| C++ documentation for strstr
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