Objective-C教程的例题:
//// main.m// test//// Created by liwei on 14-10-28.// Copyright (c) 2014年 liwei. All rights reserved.//#import<Foundation/Foundation.h>//@interface描述类和方法@interface Fraction: NSObject-(void)print;-(void)setn : (int)n;-(void)setd : (int)d;@end//@implementation用于描述数据即定义数据及实现方法@implementation Fraction{ int nn,dd;}-(void) print{ NSLog(@"这个比值分数是:%i/%i",nn,dd);}-(void) setn:(int)n{ nn=n;}-(void) setd:(int)d{ dd=d;}@end//main函数用来使用类int main(int argc, const char * argv[]) { @autoreleasepool { Fraction *myFraction; myFraction=[Fraction alloc]; myFraction=[myFraction init]; [myFraction setn:1]; [myFraction setd:3]; [myFraction print]; } return 0;}