#include
#include
using namespace std;
int main()
{
string str( "a bc abc abcd abcde" );
string searchString( "hello" );
string replaceString( "ab" );
assert( searchString != replaceString );
string::size_type pos = 0;
while ( (pos = str.find(searchString, pos)) != string::npos ) {
str.replace( pos, searchString.size(), replaceString );
pos++;
}
cout << str << endl;
return 0;
}