IOS计算器的实现

//  //  main.m  //  Calcultor    /*              计算器的简单实现                 1.加法                 2.减法                 3.乘法                 4.除法              实现两个数的运算   */  #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(@"请输入一个算式例如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(@"您计算的结果是=%.lf",[cal counter:operator]);              //      //    Menu * menu = [[Menu alloc]init];  //      //    [menu showMenu];            return 0;  }

#import <Foundation/Foundation.h>  #import "Calcultor.h"    @interface Menu : NSObject    {      Calcultor *  _cal;  }  /**显示菜单选项*/  -(void)showMenu:(Calcultor *)cal;    @end

#import "Menu.h"    @implementation Menu    /**显示菜单选项*/  -(void)showMenu:(Calcultor *)cal;  {        //    NSLog(@"菜单");  //    NSLog(@"1.计算 + - * /");  //    NSLog(@"2.计算一个数的平方");  //    NSLog(@"请输入您的的选项：");  //    int selectNumber;  //    scanf("%d",&selectNumber);  //    switch () {  //        case :  //            break;  //              //        default:  //            break;  //    }    }  @end

#import <Foundation/Foundation.h>    @interface Calcultor : NSObject  {      @public      /**用来记录操作数1*/      double _number1;            /**用来记录操作数2*/      double _number2;            /**用来记录结果*/            double _result;            /**用来记录操作符*/      char   _calcultorOperator;  }  //@property声明  @property double number1;  @property double number2;  @property double result;  @property char calcultorOperator;    /**加法*/  -(double)add;    /**减法*/  -(double)subtract;    /**乘法*/  -(double)multiply;    /**除法*/  -(double)divide;    -(double)square;    /**计算器的简单实现*/  -(double)counter:(char)calcultor;      //-(void)initWithNumber1:(double)number1 andInitWithNumber2:(double)number2 andInitWithCalcultorOperator:(char)calcultor;    @end

#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);  }    /**减法*/  - (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;  }      /**计算器的简单实现*/  -(double)counter:(char)calcultor  {      //char calcultor;//局部变量                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;  //}      /**！！！调试用的！！！*/  -(NSString *)description  {      return [NSString stringWithFormat:@"操作数1:%.1lf 操作数2:%.1lf 结果 : %.1lf 操作符 : %c",_number1,_number2,_result,_calcultorOperator];  }  @end

热门搜索

IOS计算器的实现