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POAssistance needed writing simple Objective-C program
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  1. POAssistance needed writing simple Objective-C program
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    copied!<p>I have been struggling along with an online objective-c class for a few weeks now. I'm feeling very stupid.. My latest assignment is to write a program that demonstrates a class named Circle by asking the user for the circle's radius, creating a Circle object, and then reporting the circle's area, diameter, and circumference. We should have the following member variables:</p> <pre><code>radius: a double pi: a double initialized to 3.14159 </code></pre> <p>and the following member functions:</p> <pre><code>setRadius - a mutator function for the radius variable getRadius - an accessor function for the radius variable getArea - returns the area of the circle, which is calculated as: area = pi * radius * radius getDiameter - returns the diameter of the circle, which is calculated as: diameter = radius * 2 getCircumference - returns the circumference of the circle, which is calculated as: circumference = 2 * pi * radius </code></pre> <p>The member variables of the class should be set as private.</p> <p>Here is my program so far:</p> <p>Main:</p> <pre><code>int main(int argc, const char * argv[]) { @autoreleasepool { int radius; NSLog(@"Enter the circles radius:"); scanf ("%d", &amp;radius); } return 0; } </code></pre> <hr> <p>Interface:</p> <pre><code>#import &lt;Foundation/Foundation.h&gt; //circle class @interface circle : NSObject { @private -(double) radius; -(double) pi; } @property int setRadius, getRadius; -(double) getArea; -(double) getDiameter; -(double) getCircumcerence; @end </code></pre> <hr> <p>Implementation: </p> <pre><code>#import "circle.h" @implementation circle @synthesize setRadius, getRadius; -(double) pi { pi = 3.14159; } -(double) getArea { pi * radius * radius; } -(double) getDiameter { radius * 2; } -(double) getCircumcerence { 2 * pi * radius; } @end </code></pre> <p>As you can see, I haven't gotten very far. I am confused as how to simply utilize my methods in my main, and am sure I have already made mistakes. </p> <p>Any advice is appreciated! I really need help, and am short on time. Also, this may be far-fetched but if anyone could maybe skype with me and help me through it? Thanks!</p>
 

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