Programming in Objective-C, Sixth Edition

Character Arrays

Program 13.2 illustrates how you can use a character array. However, one point is worthy of discussion. Can you spot it?

Program 13.2

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#import <Foundation/Foundation.h>int main (int argc, char * argv[]){   @autoreleasepool {      char word[] = {  'H', 'e', 'l', 'l', 'o', '!' } ;      int  i;      for ( i = 0; i < 6; ++i )         NSLog (@"%c", word[i]);   }   return 0;}

Program 13.2 Output

Hello!

In this case, the size of the array is determined automatically based on the number of initialization elements. Because Program 13.2 has six initial values listed for the array word, the Objective-C language implicitly dimensions the array to six elements.

This approach works fine as long as you initialize ...