//
//  main.m
//  Calcultor

/
            計算器的簡單實現
               1.加法
               2.減法
               3.乘法
               4.除法
            實現兩個數的運算
 /
import <Foundation/Foundation.h>
import "Calcultor.h"
import "Menu.h"
int main(int argc, const char  argv[])
{
    Calcultor  cal = [[Calcultor alloc]init];

//[cal setNumber1:10];

//[cal setNumber2:10];

//[cal setResult:0];

//[cal setCalcultorOperator:'+'];



//     [cal initWithNumber1:10 andInitWithNumber2:10 andInitWithCalcultorOperator:'+'];
    //[cal counter];
    //NSLog(@"%@",cal);
    double number1;
    double number2;
 //   double result;
    char operator;

NSLog(@"請輸入一個算式例如A+B:\n");
scanf("%lf",&number1);
scanf("%c",&operator);
scanf("%lf",&number2);
[cal setNumber1:number1];
[cal setNumber2:number2];

//[cal setCalcultorOperator:operator];
 //   [cal counter:operator];

NSLog(@"您計算的結果是=%.lf",[cal counter:operator]);



//

//    Menu * menu = [[Menu alloc]init];
//

//    [menu showMenu];

return 0;

}
</pre>
#import <Foundation/Foundation.h>

import "Calcultor.h"
@interface Menu : NSObject
{
    Calcultor   _cal;
}
/**顯示菜單選項/
-(void)showMenu:(Calcultor *)cal;
@end
</pre> 


#import "Menu.h"

@implementation Menu
/*顯示菜單選項/
-(void)showMenu:(Calcultor *)cal;
{
//    NSLog(@"菜單");
//    NSLog(@"1.計算 + - * /");
//    NSLog(@"2.計算一個數的平方");
//    NSLog(@"請輸入您的的選項：");
//    int selectNumber;
//    scanf("%d",&selectNumber);
//    switch () {
//        case :
//            break;
//

//        default:
//            break;
//    }
}
@end
</pre> 


#import <Foundation/Foundation.h>

@interface Calcultor : NSObject
{
    @public
    /*用來記錄操作數1/
    double _number1;

/**用來記錄操作數2*/
double _number2;

/**用來記錄結果*/

double _result;

/**用來記錄操作符*/
char   _calcultorOperator;

}
//@property聲明
@property double number1;
@property double number2;
@property double result;
@property char calcultorOperator;
/*加法/
-(double)add;
/*減法/
-(double)subtract;
/*乘法/
-(double)multiply;
/*除法/
-(double)divide;
-(double)square;
/*計算器的簡單實現/
-(double)counter:(char)calcultor;
//-(void)initWithNumber1:(double)number1 andInitWithNumber2:(double)number2 andInitWithCalcultorOperator:(char)calcultor;
@end
</pre> 


#import "Calcultor.h"

@implementation Calcultor
-(id)init
{
    if(self = [super init])
    {
        _result = 0.0;
    }
    return self;
}
/*加法/

(double)add
{
  return (_number1 + _number2);
  //NSLog(@"%.1lf",_result);
}

/*減法/

(double)subtract
{
  return _number1 - _number2;
  //NSLog(@"%.1lf",_result);
}

/*乘法/

(double)multiply
{
  return _number1 * _number2;
  //NSLog(@"%.1lf",_result);
}

/*除法/

(double)divide

{
    return _number1 / _number2;
    //NSLog(@"%.1lf",_result);
}
-(double)square
{
    return _number1 * _number1;
}
/*計算器的簡單實現/
-(double)counter:(char)calcultor
{
    //char calcultor;//局部變量

    switch (calcultor) {
        case '+':
            _result = [self add];
            break;
        case '-':
            _result = [self subtract];
            break;
        case '*':
            _result = [self multiply];
            break;
        case '/':
            _result = [self divide];
            break;
        default:
           break;
    }
return _result;

}
//- (void)initWithNumber1:(double)number1 andInitWithNumber2:(double)number2 andInitWithCalcultorOperator:(char)calcultor
//{
//    _number1 = number1;
//    _number2 = number2;
//    _calcultorOperator = calcultor;
//}
/*！！！調試用的！！！/
-(NSString *)description
{
    return [NSString stringWithFormat:@"操作數1:%.1lf 操作數2:%.1lf 結果 : %.1lf 操作符 : %c",_number1,_number2,_result,_calcultorOperator];
}
@end
</pre>