std::basic_string::substr
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<metanoindex/>
<tbody> </tbody> basic_string substr( size_type pos = 0, size_type count = npos ); |
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Gibt eine Teilzeichenfolge
[pos, pos+count). Wenn die angeforderte Teilzeichenkette reicht über das Ende des Fadens, oder wenn count == npos der zurückgegebene Teilzeichenkette [pos, size()) . Original:
Returns a substring
[pos, pos+count). If the requested substring lasts past the end of the string, or if count == npos, the returned substring is [pos, size()). The text has been machine-translated via Google Translate.
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Parameter
| pos | - | Position des ersten Zeichens umfassen
Original: position of the first character to include The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. |
| count | - | Länge der Teilzeichenfolge
Original: length of the substring The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. |
Rückgabewert
String, der den substring
[pos, pos+count) .Original:
String containing the substring
[pos, pos+count).The text has been machine-translated via Google Translate.
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Ausnahmen
std::out_of_range if pos > size().
Komplexität
Linear in
countOriginal:
Linear in
countThe text has been machine-translated via Google Translate.
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You can help to correct and verify the translation. Click here for instructions.
Beispiel
#include <string>
#include <iostream>
int main()
{
std::string a = "0123456789abcdefghij";
std::string sub1 = a.substr(10);
std::cout << sub1 << '\n';
std::string sub2 = a.substr(5, 3);
std::cout << sub2 << '\n';
std::string sub3 = a.substr(12, 100);
std::cout << sub3 << '\n';
}
Output:
abcdefghij
567
cdefghij