assign
Syntax:
#include <string> void assign( size_type num, const char& val ); void assign( input_iterator start, input_iterator end ); string& assign( const string& str ); string& assign( const char* str ); string& assign( const char* str, size_type num ); string& assign( const string& str, size_type index, size_type len ); string& assign( size_type num, const char& ch );
The default assign() function gives the current string the values from start to end, or gives it num copies of val.
In addition to the normal assign functionality that all C++ containers have, strings possess an assign() function that also allows them to:
- assign str to the current string,
- assign the first num characters of str to the current string,
- assign a substring of str starting at index that is len characters long to the current string,
For example, the following code:
string str1, str2 = "War and Peace"; str1.assign( str2, 4, 3 ); cout << str1 << endl;
displays
and
This function will destroy the previous contents of the string.
Related topics: