#import<Foundation/Foundation.h>@interfaceStudent : NSObject
@PRoperty(retain,nonatomic)NSString*name;
@property(assign,nonatomic)intage;//设计单利模式//+(类名＊)shareXXX//defaultXXX//xxx+(Student *)shareStudent;@end#import"Student.h"@implementationStudent+(Student *)shareStudent
{//被static修饰的变量只会被初始化一次staticStudent *stu=nil;if(stu==nil) {//如果学生对象为空，就初始化学生对象stu=[[Student alloc]init];
}returnstu;
}@end#import<Foundation/Foundation.h>#import"Student.h"intmain(intargc,constchar*argv[])
{
@autoreleasepool {//调用单例方法//通过调用单例方法，返回的为同一个对象//Student *stu=[Student shareStudent];是单例模式的创建对象的方法Student *stu=[Student shareStudent];
stu.name=@"xiaowang";
Student*stu2=[Student shareStudent];
NSLog(@"%@", stu2.name);
}return0;
}