C++实现分数计算器的方法

这篇文章主要介绍“C++实现分数计算器的方法”，在日常操作中，相信很多人在C++实现分数计算器的方法问题上存在疑惑，小编查阅了各式资料，整理出简单好用的操作方法，希望对大家解答”C++实现分数计算器的方法”的疑惑有所帮助！接下来，请跟着小编一起来学习吧！

分数计算器项目设计，供大家参考，具体内容如下

一、问题描述及功能要求

1、分数计算器程序的每种功能都可以用菜单选项列出，用户可以根据需要选择相应的菜单项，从而执行不同的子程序以完成相应的功能
2、增加运算符重载功能，使所设计的分数计算器可以进行四则运算&幂运算&逻辑运算。四则运算&幂运算可以用菜单选项列出，用户可以根据需要选择相应的运算。
3、程序具有判断功能，当有非法的输入时（如分母等于零等），能给出提示信息并退出运算
4、可将分数化为十进制小数和带分数
5、设计逻辑功能的函数使其可以进行逻辑比较，比如大于、小于的逻辑比较。
6、设计数字选择功能程序，用户可以输入数字键选择进行四则运算&幂运算或逻辑比较，运算结果为TRUE或FLASE。
7、要求界面提示清楚、便于操作

二、代码实现 带有注释

废话不说，直接代码，欢迎指正。

大家CV可能有不兼容的情况，可以跟我滴滴，尽可能解决问题地回复。

#include <iostream> #include <string.h> #include <stdlib.h> #include <stdio.h> #include <fstream> using namespace std; void jiafa1() {     system("cls");     while(1)     {         long long int a,c,d,f;         char b,e;         cin>>a>>b>>c>>d>>e>>f;         a=a*f+d*c;         c=c*f;         int flag=1;         if((a<0&&c<0)||(a>0&&c>0)) flag=0;         a=abs(a);c=abs(c);         if(a%c==0)         {             if(flag==0){cout<<a/c<<endl;}             if(flag==1){cout<<"-"<<a/c<<endl;}         }         else if(a>c)         {             int x,y;             x=a;y=c;             int z=c;             while(a%c!=0)             {                 z=a%c;                 a=c;                 c=z;             }             a=x/z;c=y/z;             if(flag==0){cout<<a<<"/"<<c<<endl;}             if(flag==1){cout<<"-"<<a<<"/"<<c<<endl;}         }        else if(c>a)         {             int x,y;             x=a;y=c;             int z=a;             while(c%a!=0)             {                 z=c%a;                 c=a;                 a=z;             }             c=y/z;a=x/z;             if(flag==0){cout<<a<<"/"<<c<<endl;}             if(flag==1){cout<<"-"<<a<<"/"<<c<<endl;}         }         cout<<"1继续使用，0返回上一级"<<endl;         int g;cin>>g;         if(g==1) continue;         if(g==0) break;     } } void jiafa2() {     system("cls");     while(1)     {         long long int a,c,d;         char b;         cin>>a>>b>>c>>d;         a=a+d*c;         cout<<a<<"/"<<c<<endl;         cout<<"1继续使用，0返回上一级"<<endl;         int g;cin>>g;         if(g==1) continue;         if(g==0) break;     } } void jiafa() {     while(1)     {         system("cls");         cout<<"(1) 两个分数"<<endl;         cout<<"(2) 分数和整数"<<endl;         cout<<"(3) 返回上一级"<<endl;         int a;cin>>a;         if(a==1){jiafa1();}         if(a==2){jiafa2();}         if(a==3){break;}     } } void jianfa1() {     system("cls");     while(1)     {         int a,c,d,f;         char b,e;         cin>>a>>b>>c>>d>>e>>f;         a=a*f-d*c;         c=c*f;         int flag=1;         if((a<0&&c<0)||(a>0&&c>0)) flag=0;         a=abs(a);c=abs(c);         if(a%c==0)         {             if(flag==0){cout<<a/c<<endl;}             if(flag==1){cout<<"-"<<a/c<<endl;}         }         else if(a>c)         {             int x,y;             x=a;y=c;             int z=c;             while(a%c!=0)             {                 z=a%c;                 a=c;                 c=z;             }             a=x/z;c=y/z;             if(flag==0){cout<<a<<"/"<<c<<endl;}             if(flag==1){cout<<"-"<<a<<"/"<<c<<endl;}         }         else if(c>a)         {             int z=a;             int x,y;             x=a;y=c;             while(c%a!=0)             {                 z=c%a;                 c=a;                 a=z;             }             a=x/z;c=y/z;             if(flag==0){cout<<a<<"/"<<c<<endl;}             if(flag==1){cout<<"-"<<a<<"/"<<c<<endl;}         }         cout<<"1继续使用，0返回上一级"<<endl;         int g;cin>>g;         if(g==1) continue;         if(g==0) break;     } } void jianfa2() {     system("cls");     while(1)     {         long long int a,c,d;         char b;         cin>>a>>b>>c>>d;         a=a-d*c;         cout<<a<<"/"<<c<<endl;         cout<<"1继续使用，0返回上一级"<<endl;         int g;cin>>g;         if(g==1) continue;         if(g==0) break;     } } void jianfa() {    while(1)     {         system("cls");         cout<<"(1) 两个分数"<<endl;         cout<<"(2) 分数和整数"<<endl;         cout<<"(3) 返回上一级"<<endl;         int a;cin>>a;         if(a==1){jianfa1();}         if(a==2){jianfa2();}         if(a==3){break;}     } } void chengfa1() {     system("cls");     while(1)     {         long long int a,c,d,f;         char b,e;         cin>>a>>b>>c>>d>>e>>f;         a=a*d;c=c*f;         int flag=1;         if((a<0&&c<0)||(a>0&&c>0)) flag=0;         a=abs(a);c=abs(c);         if(a%c==0)         {             if(flag==0){cout<<a/c<<endl;}             if(flag==1){cout<<"-"<<a/c<<endl;}         }         else if(a>c)         {             int z=c;             int x,y;x=a,y=c;             while(a%c!=0)             {                 z=a%c;                 a=c;                 c=z;             }             a=x/z;c=y/z;             if(flag==0){cout<<a<<"/"<<c<<endl;}             if(flag==1){cout<<"-"<<a<<"/"<<c<<endl;}         }         else if(c>a)         {             int z=a;             int x,y;x=a;y=c;             while(c%a!=0)             {                 z=c%a;                 c=a;                 a=z;             }             a=x/z;c=y/z;             if(flag==0){cout<<a<<"/"<<c<<endl;}             if(flag==1){cout<<"-"<<a<<"/"<<c<<endl;}         }         cout<<"1继续使用，0返回上一级"<<endl;         int g;cin>>g;         if(g==1) continue;         if(g==0) break;     } } void chengfa2() {     system("cls");     while(1)     {         long long int a,c,d;         char b;         cin>>a>>b>>c>>d;         int flag=1;         if((a<0&&d<0)||(a>0&&d>0)) flag=0;         a=abs(a);d=abs(d);         if(d%c==0) {a=a*(d/c);         if(flag==0) {cout<<a<<endl;}         if(flag==1) {cout<<"-"<<a<<endl;}         }         else if(c%d==0)         {             if(flag==0) {cout<<a<<"/"<<c/d<<endl;}             if(flag==1) {cout<<"-"<<a<<"/"<<c/d<<endl;}         }         else         {             if(flag==0){cout<<a*d<<"/"<<c<<endl;}             if(flag==1){cout<<"-"<<a*d<<"/"<<c<<endl;}         }         cout<<"1继续使用，0返回上一级"<<endl;         int g;cin>>g;         if(g==1) continue;         if(g==0) break;     } } void chengfa() {     while(1)     {         system("cls");         cout<<"(1) 两个分数"<<endl;         cout<<"(2) 分数和整数"<<endl;         cout<<"(3) 返回上一级"<<endl;         int a;cin>>a;         if(a==1){chengfa1();}         if(a==2){chengfa2();}         if(a==3){break;}     } } void chufa1() {     system("cls");     while(1)     {         int a,c,d,f;         char b,e;         cin>>a>>b>>c>>d>>e>>f;         int flag=1;         a=a*f;c=c*d;if((a<0&&c<0)||(a>0&&c>0)) flag=0;         a=abs(a);c=abs(c);         if(a%c==0)         {             if(flag==0) cout<<a/c<<endl;             if(flag==1) cout<<"-"<<a/c<<endl;         }         else if(a>c)         {             int z=c;             int x,y;x=a;y=c;             while(a%c!=0)             {                 z=a%c;                 a=c;                 c=z;             }             a=x/z;c=y/z;             if(flag==0){cout<<a<<"/"<<c<<endl;}             if(flag==1){cout<<"-"<<a<<"/"<<c<<endl;}         }         else if(c>a)         {             int z=a;             int x,y;x=a;y=c;             while(c%a!=0)             {                 z=c%a;                 c=a;                 a=z;             }             a=x/z;c=y/z;             if(flag==0){cout<<a<<"/"<<c<<endl;}             if(flag==1){cout<<"-"<<a<<"/"<<c<<endl;}         }         cout<<"1继续使用，0返回上一级"<<endl;         int g;cin>>g;         if(g==1) continue;         if(g==0) break;     } } void chufa2() {     system("cls");     while(1)     {         long long int a,c,d;         char b;         cin>>a>>b>>c>>d;         int flag=1;         if((a<0&&d<0)||(a>0&&d>0)) flag=0;         a=abs(a);d=abs(d);         if(d%c==0) {a=a*(d/c);if(flag==0){cout<<a<<endl;}if(flag==1){cout<<"-"<<a<<endl;}}         else if(c%d==0)         {             if(flag==0) {cout<<a<<"/"<<c/d<<endl;}             if(flag==1) {cout<<"-"<<a<<"/"<<c/d<<endl;}         }         else         {             if(flag==0) {cout<<a*d<<"/"<<c<<endl;}             if(flag==1) {cout<<"-"<<a*d<<"/"<<c<<endl;}         }         cout<<"1继续使用，0返回上一级"<<endl;         int g;cin>>g;         if(g==1) continue;         if(g==0) break;     } } void chufa() {     while(1)     {         system("cls");         cout<<"(1) 两个分数"<<endl;         cout<<"(2) 分数和整数"<<endl;         cout<<"(3) 返回上一级"<<endl;         int a;cin>>a;         if(a==1){chufa1();}         if(a==2){chufa2();}         if(a==3){break;}     } } void chengfang1() {     system("cls");     while(1)     {         long long int a,c,d;         char b;         cin>>a>>b>>c>>d;         int flag=1;         if(a<0&&d%2==0) flag=0;         if(a>0) flag=0;         a=abs(a);         long int sum1=1;         long int sum2=1;         while(d--)         {             sum1*=a;             sum2*=c;         }         if(flag==0){cout<<sum1<<"/"<<sum2<<endl;}         if(flag==1){cout<<"-"<<sum1<<"/"<<sum2<<endl;}         cout<<"1继续使用，0返回上一级"<<endl;         int g;cin>>g;         if(g==1) continue;         if(g==0) break;     } } void chengfang() {     while(1)     {         system("cls");         cout<<"(1) 分数和整数"<<endl;         cout<<"(2) 返回上一级"<<endl;         int a;cin>>a;         if(a==1){chengfang1();}         if(a==2){break;}     } } void sizeyunsuan() {     while(1)    {         system("cls");         cout<<"(1) 加法运算"<<endl;         cout<<"(2) 减法运算"<<endl;         cout<<"(3) 乘法运算"<<endl;         cout<<"(4) 除法运算"<<endl;         cout<<"(5) 乘方运算"<<endl;         cout<<"(6) 返回上一级"<<endl;         int a;cin>>a;         if(a==1) {jiafa();}         if(a==2){jianfa();}         if(a==3){chengfa();}         if(a==4){chufa();}         if(a==5){chengfang();}         if(a==6) break;    } } void jiemian() {     cout<<"(1) 四则运算及幂运算"<<endl;     cout<<"(2) 退出程序"<<endl;     int xxx;cin>>xxx;     if(xxx==1){sizeyunsuan();}     if(xxx==2){system("cls");cout<<"蟹蟹你的使用，欢迎下次使用哦"<<endl;exit(0);} } int main() {     while(1)     {         system("cls");         jiemian();     }     return 0; }

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