//
//  main.m
//  prog1
//  Chapter 2 from Stephen Kochan's Programming in Objective-C 2.0
//

#import <Foundation/Foundation.h>

int main(int argc, const char * argv[]) {
    @autoreleasepool {
        // Exercise 1: Write and run programs 2.1 thru 2.5

        // Program 2.1
        NSLog(@"Programming is fun!");

        // Program 2.2
        NSLog(@"Programming in Objective-C is even more fun!");

        // Program 2.3
        NSLog(@"Testing...\n..1\n...2\n....3");

        // Program 2.4
        int sum1;

        sum1 = 50 + 25;

        NSLog(@"The sum of 50 and 25 is %i", sum1);

        // Program 2.5
        int value1, value2, sum2;

        value1 = 50;
        value2 = 25;
        sum2 = value1 + value2;

        NSLog(@"The sum of %i and %i is %i", value1, value2, sum2);

        // Exercise 2
        NSLog(@"In Objective-C, lowercase letters are significant.\nmain is where execution begins.\nOpen and closed braces enclose program statements in a routine.\nAll program statements must be terminated by a semicolon.");

        // Exercise 3
        int i;

        i = 1;
        NSLog(@"Testing...");
        NSLog(@"....%i", i);
        NSLog(@"...%i", i + 1);
        NSLog(@"..%i", i + 2);

        // Exercise 4
        int value3, value4, sum3;

        value3 = 15;
        value4 = 87;
        sum3 = value3 - value4;
        NSLog(@"If you subtract %i from %i you end up with %i", value3, value4, sum3);

        //Exercise 5
        int sum4;
        /*
         COMPUTE RESULT
        */
        sum4 = 25 + 37 - 19;
        // DISPLAY RESULTS
        NSLog(@"The answer is %i", sum4);

        // Exercise 6
        int answer, result;

        answer = 100;
        result = answer - 10;
        NSLog(@"The result is %i\n", result + 5);

    }
    return 0;
}