hello world——Objective-C代码贴,欢迎各种吧友晒代码！

//
// main.m
// preg1
//
// Created by mac on 13-1-25.
// Copyright (c) 2013年 __MyCompanyName__. All rights reserved.
//
#import <Foundation/Foundation.h>
@interface Fraction:NSObject
-(void)print;
-(void)setFenzi:(double)value1;
-(void)setFenmu:(double)value2;
@end
@implementation Fraction
{
double fenzi;
double fenmu;
}
-(void)print;
{
NSLog(@"%lf/%lf",fenzi,fenmu);
}
-(void)setFenzi:(double)value1
{
fenzi = value1;
}
-(void)setFenmu:(double)value2
{
fenmu = value2;
}
@end
// 以下是万恶的program部分
int main(int argc, const char * argv[])
{
printf( "hello world\n" );
@autoreleasepool {
double value1,value2;
Fraction*fenshi=[[Fraction alloc] init];
NSLog(@"输入两个数字 中间加空格：");
scanf("%lf %lf",&value1,&value2);
[fenshi setFenzi:value1];
[fenshi setFenmu:value2];
NSLog(@" 呵呵，这个分式是（弱智程序）："),[fenshi print];
}
return 0;
}