Can somebody tell me if I''m doing this casting right? I''m programming in C, and I''m trying to convert the char ''9'' in userInput to an int, and store it in digit. char userInput[5]; userInput[1] = ''9''; int digit = 0; digit = (int)userInput[1]; Thanks.

By the way, the problem I''m having is that when I print outputArray, instead of printing 9 it prints 57.

Well, you''ve just discovered one of the (many) crap things about c. The name of the ''char'' type is utterly misleading as it doesn''t represent a character at all it just represents a byte. Even worse, you the c standard doesn''t tell you if this is a signed or an unsigned byte - it is up to the compiler (although we can ignore this complication for this example.)

So when you do:

userInput[1] = ''9'';

the compiler is just turning the ''9'' into a byte, and the byte value for ascii ''9'' is 57 and the generated code is exactly the same as doing:

userInput[1] = 57;

So your cast is fine but all it is doing is converting a byte to an int which doesn''t change the value at all - it just adds a bunch of leading zeros. To get the effect you are after you actually have to do:

digit = (int)(userInput[1] - ''0'');