abc, Objective-C - rextester

abc

#import <Foundation/Foundation.h>

@interface rectangle : NSObject
{
    double length,base;
}
+(double)getPi;
-(void)setlength:(double)l;
-(void)setbase:(double)b;
-(double)getArea;
@end

@implementation rectangle

-(void)sethight:(double)l
{
    length=l;
}
-(void)setbase:(double)b
{
    width=w;
}
-(double)getArea
{
    return 1/2*l*b;
}
@end
    
@interface Cylinder : Circle
{
    double height;
}
-(void)setHeight:(double)h;
-(double)getArea;
@end
    
@implementation Cylinder
-(void)setHeight:(double)h
{
    height = h;
}
-(double)getArea:(double)r
{
        //Circle *c = [[Circle alloc]init];
        //[c setRadius:3];
        return height*r*r*3.14;
}    
@end

int main (int argc, const char * argv[])
{
    NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
    Circle *c1 = [[Circle alloc]init];
    [c1 setRadius:3.5];    
    NSLog (@"Area : %lf",[c1 getArea]);
    
    Cylinder *cy1 = [[Cylinder alloc]init];
    [cy1 setHeight:5.0];    
    NSLog (@"Area : %lf",[cy1 getArea:3.5]);
    
    [pool drain];
    return 0;
}


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