21.string.replace.stdcxx-170.cpp

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#include <cassert>
#include <string>
 
int main ()
{
    std::string s ("abc");
 
    s.replace (s.begin (), s.begin (), s.begin () + 1, s.begin () + 2);
    assert ("babc" == s);
 
    s = "abc";
 
    s.replace (s.begin (), s.begin (), s.rbegin () + 1, s.rbegin () + 2);
    assert ("babc" == s);
 
    s = "abc";
 
    s.replace (s.begin (), s.begin (), &s [1], &s [2]);
    assert ("babc" == s);
 
    return 0;
}