day05-01-数组练习

Objective-c

//  main.m
//  day05-01-数组练习
//
//  Created by Aaron on 15/7/7.
//  Copyright (c) 2015年 Aaron. All rights reserved.
//
#import <Foundation/Foundation.h>
#import "Company.h"
int main(int argc, const char * argv[]) {
    @autoreleasepool {
        Company *c = [[Company alloc] init];
        NSLog(@"%ld",[c leftForMonth:11]);
    }
    return 0;
}

#import <Foundation/Foundation.h>
/*
 2.设计一个工厂类,创建一个手机厂
    该手机厂每个月生产1000部手机,A品及格率80%(不及格的B品要回炉再造)
    从7月到11月是销售旺季,每个月能卖出1100部手机
    其他月份是销售淡季,每个月能卖出500部手机
    问:1月创建厂,实现一个方法,要求输入该年某月,求出当月该手机厂有多少库存?
 */
@interface Company : NSObject
{
    NSInteger _product;
    float _percent;
    NSArray *_saleArray;
}
-(NSInteger)leftForMonth:(NSInteger)month;
@end

#import "Company.h"
@implementation Company
-(instancetype)init
{
    if(self = [super init])
    {
        _saleArray = @[@500,@500,@500,@500,@500,@500,@1100,@1100,@1100,@1100,@1100,@500];
        _product = 1000;
        _percent = 0.8;
    }
    return self;
}
-(NSInteger)leftForMonth:(NSInteger)month
{
    //1.求总产量
    NSInteger total = _product*_percent*month;
    //2.求销售量
    NSInteger sale = 0;
    for(int i = 0; i < month; i++)
    {
        sale = sale + [_saleArray[i] integerValue];
    }
    //3.求库存
    return total-sale >= 0 ?total-sale:0;
}
@end