CODEWITHSUNDEEP
iphoneascii
topace
topace

Reputation: 1791

How to convert ASCII value to a character in Objective-C?

I was wondering if anyone has the following php function equivalents in Objective-C for iPhone development:

  1. ord() # returns the ASCII value of the first character of a string.
  2. chr() # returns a character from the specified ASCII value.

Many thanks!

Upvotes: 37

Views: 50498

Answers (2)

alleus
alleus

Reputation: 6077

This is how you can work with ASCII values and NSString. Note that since NSString is working with unichars, there could be unexpected results for a non ASCII string.

// NSString to ASCII
NSString *string = @"A";
int asciiCode = [string characterAtIndex:0]; // 65

// ASCII to NSString
int asciiCode = 65;
NSString *string = [NSString stringWithFormat:@"%c", asciiCode]; // A

Upvotes: 119

luvieere
luvieere

Reputation: 37494

//char to int ASCII-code
char c = 'a';
int ascii_code = (int)c;

//int to char
int i = 65; // A
c = (char)i;

Upvotes: 12

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