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C++ const help
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I'm not that used to C++ and hoping that someone can help me out with the const keyword. If I make a parameter to a function 'const' ,and then try to reference it, like:
to do something with it, the compiler gives the "invalid conversion from const char* to char*" when I try to pass in a parameter. The question is, is there some way to reference the 'param' while keeping it constant? or how can I fix the error message? Thanks in advance
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Why not just use std::strings?
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you can do this:
char* ptr = const_cast<char*>(param;), but that defeats the purpose of using const in the first place. Casting out the const should be avoided whenever possible. Last edited by Ancient Dragon; Feb 12th, 2007 at 2:39 pm.
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Either using :
But it would be interesting to know what you are trying to achieve here.....
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But it would be interesting to know what you are trying to achieve here.....
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Basically, I need to step through any array using pointers instead of the array indices. I changed my char* ptr to const char* ptr and it does work. Thanks.
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Originally Posted by blackjack 
Basically, I need to step through any array using pointers instead of the array indices. I changed my char* ptr to const char* ptr and it does work. Thanks.
const char* copy do you any good? Neither pointer can you modify, so copying it would be sort of pointless (sorry, bad pun). "Technological progress is like an axe in the hands of a pathological criminal."
All my posts may be freely redistributed under the terms of the MIT license.
All my posts may be freely redistributed under the terms of the MIT license.
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