Add an int to a char in c# to move its ascii value up (just like in c++)

Question

In c++ this code would work:

char c='a'; 
int r=2;
c+=r;

This would do the same as c='c'. How can I do the same in c#?

possible duplicate of [Incrementation of char](http://stackoverflow.com/questions/4583191/incrementation-of-char) — Jamie Dixon, May 14 '12 at 12:22

score 27 · Answer 1 · answered May 14 '12 at 12:22

27

Just cast it to char before adding it to c

char c='a'; 
int r=2;
c += (char) r;

answered May 14 '12 at 12:22

juergen d

@meyou: Just make sure `c` initial value is not `y` or `z` then it will increment to junk characters. – Nikhil Agrawal May 14 '12 at 12:27
2

hmm I wonder why `char c = 'a' + (char)2;` gives a compilation error? – Andy Jan 25 '13 at 22:31
4

You can do `char c = (char)('a' + 2);` instead – juergen d Jan 26 '13 at 10:48
@Andy the reason this happens is because any operation on byte-sized integers has implicit conversion to int - i.e. `'a' + 2` is really `(int)'a' + 2` and so you need to cast it back. IIRC, this is a C++ backwards-compatibility thing but there's quite a bit of discussion on this question: http://stackoverflow.com/questions/941584/byte-byte-int-why – Rob Church May 08 '13 at 14:05

1 Answers1