分?jǐn)?shù)計(jì)算器設(shè)計(jì)

1、分?jǐn)?shù)計(jì)算器設(shè)計(jì)黔南民族師范學(xué)院計(jì)算機(jī)科學(xué)系姓名：何-指導(dǎo)老師：任-學(xué)號(hào)：1208075-班級(jí)：B12計(jì)科班日期:2013.12.21、問題描述定義一個(gè)整數(shù)類。定義一個(gè)分?jǐn)?shù)類，由整數(shù)類派生出。能對(duì)分?jǐn)?shù)進(jìn)行各種計(jì)算和輸入/輸出。2、功能要求(1) 定義整數(shù)類和分?jǐn)?shù)類。其中，包括構(gòu)造函數(shù)、析構(gòu)函數(shù)、顯示函數(shù)等。(2) 輸入/輸出：對(duì)流提取和流插入運(yùn)算符進(jìn)行重載。(3) 計(jì)算功能：可進(jìn)彳丁分?jǐn)?shù)的加、減、乘和除法運(yùn)算。(4) 化簡功能：將分?jǐn)?shù)化簡為最簡分?jǐn)?shù)。(5) 異常處理功能：分?jǐn)?shù)中分母不能為零。(6) 菜單功能：每種功能的操作都是在菜單中進(jìn)行相應(yīng)選擇。3、問題的解決方案根據(jù)系統(tǒng)功能要求，可以將問題解

2、決分為以下步驟:(1)應(yīng)用系統(tǒng)分析，建立該系統(tǒng)的功能模塊框圖以及界面的組織和設(shè)計(jì);頭文件主函數(shù)定義類的對(duì)象聲明整數(shù)類聲明派生類成員函數(shù)定義定義成員函數(shù)(2)分析系統(tǒng)中的各個(gè)實(shí)體及它們之間的關(guān)系;main.exe(3)根據(jù)問題才苗述，設(shè)計(jì)系統(tǒng)的類層次;(4)完成類層次中各個(gè)類的描述;(5)完成類中各個(gè)成員函數(shù)的定義;(6)完成系統(tǒng)的應(yīng)用模塊;(7)功能調(diào)試;(8)完成系統(tǒng)總結(jié)報(bào)告。源代碼:/分?jǐn)?shù)計(jì)算器h.h:#include<iostream.h>classInteger/整數(shù)類protected:intfz;intfm;public:Integer(inta=0,intb=1):f

3、z(a),fm(b)(Integer()voiddisplay。；;classFraction:publicInteger/分?jǐn)?shù)類，進(jìn)行計(jì)算和輸入輸出public:Fraction(inta=0,intb=1):Integer(a,b)friendistream&operator>>(istream&,Fraction&);/重載輸入流friendostream&operator<<(ostream&,Fraction&);/重載輸出流Fractionoperator+(Fraction&c);/重載+運(yùn)算符(分?jǐn)?shù)

4、與分?jǐn)?shù))Fractionoperator+(intn);/重載+運(yùn)算符(整數(shù)與分?jǐn)?shù))Fractionoperator-(Fraction&c);/重載-運(yùn)算符(分?jǐn)?shù)與分?jǐn)?shù))Fractionoperator-(intn);/重載-運(yùn)算符(整數(shù)與分?jǐn)?shù))friendFractionoperator-(intn,Fraction&c);Fractionoperator*(Fraction&c);/重載*運(yùn)算符(分?jǐn)?shù)與分?jǐn)?shù))Fractionoperator*(intn);/重載*運(yùn)算符(整數(shù)與分?jǐn)?shù))Fractionoperator/(Fraction&c);/重載/運(yùn)算符

5、(分?jǐn)?shù)與分?jǐn)?shù))Fractionoperator/(intn);/重載/運(yùn)算符(整數(shù)與分?jǐn)?shù))friendFractionoperator/(intn,Fraction&c);Fractionpredigest();/約分函數(shù)voiddisplay();/實(shí)現(xiàn)函數(shù)(分?jǐn)?shù)計(jì)算器設(shè)計(jì))#include<iostream.h>#include"分?jǐn)?shù)計(jì)算器h.h"voidInteger:display()cout<<endl;cout<<"分?jǐn)?shù)計(jì)算器"<<endl<<endl;cout<<

6、;"請(qǐng)選擇功能:"<<endl;分?jǐn)?shù)與整數(shù)的四則整數(shù)與分?jǐn)?shù)的四則分?jǐn)?shù)與分?jǐn)?shù)的四則輸入0退出。cout<<"1運(yùn)算。"<<endl<<endl;cout<<"2運(yùn)算。"<<endl<<endl;cout<<"3運(yùn)算。"<<endl<<endl;cout<<"0<<endl<<endl;FractionFraction:predigest()/定義約分函數(shù)

7、(intn,d,t,sign=1;Fractiontemp;if(fz<0&&fm<0)(fz=-fz;fm=-fm;if(fz>0&&fm<0)(fm=-fm;sign=-1;if(fz<0&&fm>0)(fz=-fz;sign=-1;n=fz;d=fm;intr;if(n<d)/輾轉(zhuǎn)相除，求分子n與分母d的最大公約數(shù)(t=n;n=d;d=t;r=n%d;while(r!=0)(n=d;d=r;/d為最大公約數(shù)r=n%d;temp.fz=sign*(fz/d);temp.fm=fm/d;returnte

8、mp;重載兩個(gè)分FractionFraction:operator+(Fraction&c)/數(shù)的加法運(yùn)算符(Fractiontemp;temp.fz=fz*c.fm+fm*c.fz;temp.fm=fm*c.fm;returntemp;FractionFraction:operator+(intn)/重載分?jǐn)?shù)和整數(shù)的加法運(yùn)算(Fractiontemp;temp.fz=fm*n+fz;temp.fm=fm;returntemp;Fractionoperator-(intn,Fraction&c)(Fractiontemp;temp.fz=c.fm*n-c.fz;temp.fm=

9、c.fm;returntemp;FractionFraction:operator-(intn)整數(shù)的減法運(yùn)算符/重載分?jǐn)?shù)減(Fractiontemp;temp.fz=fz-fm*n;temp.fm=fm;returntemp;FractionFraction:operator-(Fraction&c)/個(gè)分?jǐn)?shù)的減法運(yùn)算符(Fractiontemp;temp.fz=fz*c.fm-fm*c.fz;temp.fm=fm*c.fm;returntemp;FractionFraction:operator*(Fraction&c)兩個(gè)分?jǐn)?shù)的乘法運(yùn)算符重載兩/重載(Fractionte

10、mp;temp.fz=fz*c.fz;temp.fm=fm*c.fm;returntemp;FractionFraction:operator*(intn)整數(shù)的乘法運(yùn)算符/重載分?jǐn)?shù)與(Fractiontemp;temp.fz=fz*n;temp.fm=fm;returntemp;FractionFraction:operator/(Fraction&c)兩個(gè)分?jǐn)?shù)的除法運(yùn)算符/重載(Fractiontemp;temp.fz=fz*c.fm;temp.fm=fm*c.fz;returntemp;FractionFraction:operator/(intn)數(shù)除以整數(shù)的除法運(yùn)算符/重載分

11、(Fractiontemp;temp.fz=fz;temp.fm=fm*n;returntemp;Fractionoperator/(intn,Fraction&c)(Fractiontemp;temp.fz=n*c.fm;temp.fm=c.fz;returntemp;ostream&operator<<(ostream&output,Fraction&t)/重載輸出運(yùn)算符，輸出分?jǐn)?shù)(inta,b,c;a=t.fz;b=t.fm;if(a=0|b=0)/當(dāng)分子，或者分母為。時(shí),輸出0cout<<"0"if(b=1)/

12、當(dāng)分母為1時(shí)，輸出分子cout<<a;if(a>b&&b!=1)/判斷分?jǐn)?shù)為假分?jǐn)?shù)(c=a/b;a=a%b;cout«c;if(a!=O)cout«"X"<<a«7'«b;)if(a<0&&-a>b&&b!=1)/當(dāng)分?jǐn)?shù)為負(fù)時(shí)，判斷為假分?jǐn)?shù)c=-a/b;a=-a%b;c=-c;cout«'='«c;if(a!=O)cout«"X"«a«7'<

13、;<b«endl;if(t.fz>O&&t.fz<t.fm&&t.fm!=0&&t.fm!=1)/判斷為真分?jǐn)?shù)output<<t.fz«7'«t.fm;if(t.fz<0&&-t.fz<t.fm&&t.fm!=O&&t.fm!=1)/判斷為真分?jǐn)?shù)output«"("«t.fz«7'«t.fm<<")"returnoutpu

14、t;istream&operator>>(istream&input,Fraction&t)/重載輸入運(yùn)算符，輸入分?jǐn)?shù)(inta,c;charb;input>>a>>b>>c;if(b='/'&&c!=0)(t.fz=a;t.fm=c;elsecout<<"錯(cuò)誤！輸入格式錯(cuò)誤或分母為0!請(qǐng)退出重新輸入！"<<endl;returninput;/main函數(shù)#include<iostream.h>#include"分?jǐn)?shù)計(jì)算器h.

15、h"intmain()(Integerdis;Fractiona,b,result,real;intm,z;charc;/數(shù)據(jù)類型dis.display();while(m!=0)cout<<”請(qǐng)輸入：(0-3):"cin>>m;if(m=1)/分?jǐn)?shù)與整數(shù)的運(yùn)算cout<<endl<<"請(qǐng)輸入一個(gè)分?jǐn)?shù)："cin>>a;cout<<endl<<"請(qǐng)輸入運(yùn)算符："cin>>c;cout<<endl<<"輸入一個(gè)

16、正整數(shù):"cin>>z;if(c='+')result=a+z;if(c='-')result=a-z;if(c='*')result=a*z;if(c='/')result=a/z;real=result.predigest();cout«"運(yùn)算式規(guī)范為:"«a«c«z«'='<<a.predigest()«c«z«'='«real«endl;c

17、out«endl;if(m=2)(cout«endl;cout«endl«"cin»z;cout«endl«"cin»c;cout«endl«"cin»b;if(c=,+,)result=b+z;if(c=,-*)result=z-b;if(c=,*)result=b*z;/整數(shù)與分?jǐn)?shù)的運(yùn)請(qǐng)輸入一個(gè)正整數(shù):M;請(qǐng)輸入運(yùn)算符：請(qǐng)輸入一個(gè)分?jǐn)?shù):if(c=7*)result=z/b;real=result.predigest();cout<<&quo

18、t;運(yùn)算式規(guī)范為:"<<z<<c<<b<<'='<<z<<c<<b.predigest()<<'='<<real<<endl;cout<<endl;分?jǐn)?shù)與分?jǐn)?shù)的運(yùn)if(m=3)/if(c='/')cout<<endl;cout<<endl<<"cin>>a;cout<<endl<<"cin>>c;cout<<endl<<"cin>>b;if(c='+')result=a+b;if(c='-')result=a-b;if(c='*')result=a*b;請(qǐng)輸入一個(gè)分?jǐn)?shù)請(qǐng)輸入運(yùn)算符："請(qǐng)輸入一個(gè)分?jǐn)?shù):result=a/b;real=result.predigest();cout<<"運(yùn)算式規(guī)范為："<<a<<c<