C++/String/string erase — различия между версиями
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Текущая версия на 13:25, 25 мая 2010
Erase a range of characters using an overloaded version of erase()
<source lang="cpp">
- include <string>
- include <algorithm>
- include <iostream>
using namespace std; int main () {
string strSample ("Hello String!"); strSample.erase (strSample.begin (), strSample.end ()); if (strSample.length () == 0) cout << "The string is empty" << endl; return 0;
}
</source>
string.erase(6,9)
<source lang="cpp">
- include <iostream>
- include <string>
using namespace std; int main() {
string str1("String handling C++ style."); string str2("STL Power"); cout << "Initial strings:\n"; cout << "str1: " << str1 << endl; cout << "str2: " << str2 << "\n\n"; // demonstrate erase() cout << "Remove 9 characters from str1:\n"; str1.erase(6, 9); cout << str1 <<"\n\n"; return 0;
} /* Initial strings: str1: String handling C++ style. str2: STL Power Remove 9 characters from str1: String C++ style.
*/ </source>
Use erase to remove all characters from (and including) location 6 through the end of string1
<source lang="cpp">
- include <iostream>
using std::cout; using std::endl;
- include <string>
using std::string; int main() {
string string1( "abcedfghijklmnopqrstuvwxyz" ); cout << "Original string:\n" << string1 << endl << endl; string1.erase( 6 ); cout << "Original string after erase:\n" << string1 << "\n\nAfter first replacement:\n"; return 0;
} /* Original string: abcedfghijklmnopqrstuvwxyz Original string after erase: abcedf After first replacement:
*/ </source>