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utilae

Problems with string.append()

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I am trying to append some characters to the end of a string, but I get an error. I am using c++. string sName="John"; sName.append(1,"_Smith"); There error I get is: "error C2664: 'std::basic_string<_Elem,_Traits,_Ax>::_Myt &std::basic_string<_Elem,_Traits,_Ax>::append(const _Elem *,std::basic_string<_Elem,_Traits,_Ax>::size_type)' : cannot convert parameter 2 from 'char *' to 'const char *' with [ _Elem=char, _Traits=std::char_traits<char>, _Ax=std::allocator<char> ] Conversion from integral type to pointer type requires reinterpret_cast, C-style cast or function-style cast" Anyone able to help?

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I think what you're trying to do is:

string sName = "John";
sName += "_Smith";

There is a function called append in std::string that takes those parameters, but you've got them backwards.

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If you are curious why the original function call didn't work, the form of string::append() that takes an integer as the first argument asks for a single char as the second argument, not a whole string. You probably wanted to do sName.append("_Smith");

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