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how to convert char to int
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Join Date: Jul 2006
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hi there, i just want to know what function to use in converting a char into an int
like:
is this the right way?
like:
C++ Syntax (Toggle Plain Text)
is this the right way?
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Join Date: Aug 2005
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>>is this the right way?
No because atoi() takes a pointer to a null-terminated string and your variable temp is just a single character.
The quickest way is to simply subtract the ascii value of '0' from it like this:
No because atoi() takes a pointer to a null-terminated string and your variable temp is just a single character.
The quickest way is to simply subtract the ascii value of '0' from it like this:
int n = temp - '0';. Why does that work? Its because a char is a small integer and if you look at an ascii chart you will see that all characters have an ascii numerical value. Internally, programs know nothing at all about characters, only numeric values as shown in that ascii chart. Don't PM me with questions -- you might get a nasty PM in response. If you have a question then post it in one of the forums.
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thank you for that detailed explanation..
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Last edited by ~s.o.s~; May 11th, 2007 at 2:19 pm.
I don't accept change; I don't deserve to live.
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Originally Posted by jaepi 
hi there, i just want to know what function to use in converting a char into an int
like:
C++ Syntax (Toggle Plain Text)
is this the right way?
but the only thing u need to do is that u should use char array in place of char variable, and the function atoi is return an int value so u should store the result in some integer variable.
like
C++ Syntax (Toggle Plain Text)
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Join Date: Dec 2005
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> yes that is a correct way u can proceed.........
Over a year late, and still you missed the better answer from ~s.o.s~
Over a year late, and still you missed the better answer from ~s.o.s~
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