Objective-C Programming (Sixth Edition) Chapter 2 Exercise answers

 

1. Omitted

2.

#import <Foundation/Foundation.h>int main(int argc, const char * argv[]){    @autoreleasepool {                // insert code here...       NSLog(@"In Obiective-c, lowercase letters are significance .\n main is where program execution begins.\n Open and closed brace enclose program stateme               nts in a routine .\n All program statements must be terminated by a semicolon .");

}

Return 0;

}

3.

Testing...

... 1

... 2

.. 3

4.

 int value1, value2, sum;        
 value1 = 87; value2 = 15; sum = value1 - value2; NSLog(@"sum is %i", sum);

5. Procedures after correction

Int sum; <--- the original int is changed to int.
/* Compute result */<--- comments on the right of the original text // change */. sum = 25 + 37-19; <--- end with a semicolon after the original text. /* Display Results */<--- change the original comment /*.. * // or //. nslog (@ "The answer is % I", sum); <--- replace the original text with double quotation marks, and add a comma before sum.

6.

The result is 95.

 

 

End

Objective-C Programming (Sixth Edition) Chapter 2 Exercise answers