C++ Primer Plus

Replacement Methods

The various replace() methods identify part of a string to be replaced and identify the replacement. The part to be replaced can be identified by an initial position and a character count or by an iterator range. The replacement can be a string object, a string array, or a particular character duplicated several times. Replacement string objects and arrays can further be modified by indicating a particular portion, using a position and a count, just a count, or an iterator range. Here are the prototypes for the various replace() methods:

basic_string& replace(size_type pos1, size_type n1, const basic_string& str);basic_string& replace(size_type pos1, size_type n1, const basic_string& str,                      size_type pos2, ...