#include<iostream>
#include<ctime>
#include<cstdlib>
using namespace std;
void Out(int x,int x0,int y,int y0,int z,int z0,int &i,int j,int n,int m0,int &j0){switch(z0){//判断整数或分数case 0:{int answer,answer0;switch(z){//运算法则判断case 0:{answer=x+y;if(j==2){if(answer>=0){cout<<n<<"   ("<<x<<")"<<" + "<<"("<<y<<")"<<" =";cin>>answer0;if(answer==answer0){cout<<"     正确！"<<endl;j0++;}else{cout<<"     错误！"<<endl;}}else{i--;}}else{cout<<n<<"   ("<<x<<")"<<" + "<<"("<<y<<")"<<" =";cin>>answer0;if(answer==answer0){cout<<"     正确！"<<endl;j0++;}else{cout<<"     错误！"<<endl;}}break;}case 1:{answer=x-y;if(j==2){if(answer>=0){cout<<n<<"    ("<<x<<")"<<" - "<<"("<<y<<")"<<" =";cin>>answer0;if(answer==answer0){cout<<"     正确！"<<endl;j0++;}else{cout<<"     错误！"<<endl;}}else{i--;}}else{cout<<n<<"    ("<<x<<")"<<" - "<<"("<<y<<")"<<" =";cin>>answer0;if(answer==answer0){cout<<"     正确！"<<endl;j0++;}else{cout<<"     错误！"<<endl;}}break;}case 2:{answer=x*y;cout<<n<<"    ("<<x<<")"<<" * "<<"("<<y<<")"<<" =";cin>>answer0;if(answer==answer0){cout<<"     正确！"<<endl;j0++;}else{cout<<"     错误！"<<endl;}break;}case 3:if(y!=0){//防止出现除数为零的情况if(m0==2){if(x%y==0)//余数判断（该操作可能会降低除法概率，，）
                    {answer=x/y;cout<<n<<"    ("<<x<<")"<<" / "<<"("<<y<<")"<<" =";cin>>answer0;if(answer==answer0){cout<<"     正确！"<<endl;j0++;}else{cout<<"     错误！"<<endl;}}elsei--;}if(m0==1){cout<<n<<"    ("<<x<<")"<<" / "<<"("<<y<<")"<<" =";}}elsei--;break;}break;}case 1:{char answer0[8];char answer[8];int mu,zi,q;if(x0!=0&&y0!=0){switch(z){//运算法则判断case 0:{mu=x0*y0;zi=x*y0+y*x0;if(mu>zi){for(q=zi;q>1;q--){if(mu%q==0&&zi%q==0){mu=mu/q;zi=zi/q;}}}else{for(q=mu;q>1;q--){if(mu%q==0&&zi%q==0){mu=mu/q;zi=zi/q;}}}sprintf(answer,"%d/%d",zi,mu);cout<<n<<"    ("<<x<<"/"<<x0<<")"<<" + "<<"("<<y<<"/"<<y0<<")"<<" =";cin>>answer0;if(strcmp(answer,answer0)==0){cout<<"     正确！"<<endl;j0++;}else{cout<<"     错误！"<<endl;}break;}case 1:{mu=x0*y0;zi=x*y0-y*x0;for(q=zi;q>1;q--){if(mu%q==0&&zi%q==0){mu=mu/q;zi=zi/q;}}sprintf(answer,"%d/%d",zi,mu);cout<<n<<"    ("<<x<<"/"<<x0<<")"<<" - "<<"("<<y<<"/"<<y0<<")"<<" =";cin>>answer0;if(strcmp(answer,answer0)==0){cout<<"     正确！"<<endl;j0++;}else{cout<<"     错误！"<<endl;}break;}case 2:{mu=x0*y0;zi=x*y;for(q=zi;q>1;q--){if(mu%q==0&&zi%q==0){mu=mu/q;zi=zi/q;}}sprintf(answer,"%d/%d",zi,mu);cout<<n<<"    ("<<x<<"/"<<x0<<")"<<" * "<<"("<<y<<"/"<<y0<<")"<<" =";cin>>answer0;if(strcmp(answer,answer0)==0){cout<<"     正确！"<<endl;j0++;}else{cout<<"     错误！"<<endl;}break;}case 3:{if(y!=0)//防止出现除数为零的情况
                    {mu=x0*y;zi=x*y0;if(mu>zi){for(q=zi;q>1;q--){if(mu%q==0&&zi%q==0){mu=mu/q;zi=zi/q;}}}else{for(q=mu;q>1;q--){if(mu%q==0&&zi%q==0){mu=mu/q;zi=zi/q;}}}sprintf(answer,"%d/%d",zi,mu);cout<<n<<"    ("<<x<<"/"<<x0<<")"<<" / "<<"("<<y<<"/"<<y0<<")"<<" =";cin>>answer0;if(strcmp(answer,answer0)==0){cout<<"     正确！"<<endl;(j0)++;}else{cout<<"     错误！"<<endl;}}elsei--;break;}}}elsei--;break;}}
}
void Judje(int &x,int &x0)//保证真分数以及最简分数
{int m,i1;if(x>x0){//保证x<x0即保证为真分数m=x;x=x0;x0=m;}for(i1=x0;i1>1;i1--){//保证为最简分数if(x%i1==0&&x0%i1==0){x=x/i1;x0=x0/i1;}}
}
void main(){int x,x0,y,y0,z,z0,j,n,n0,m,m0=0;//定义变量int num,max,min;int j0=0;cout<<"请输入随机数范围（先最小值，后最大值）"<<endl;cin>>min;cin>>max;cout<<"请输入加减是否有负数：1、有；2、没有"<<endl;cin>>j;cout<<"请输入是否要有乘除法：1、有；2、没有"<<endl;cin>>m;if(m==1){cout<<"请输入除法是否有余数（分数不做区别）：1、有；2、没有"<<endl;cin>>m0;}cout<<"请输入需要打印的题目数量（大于等于1）："<<endl;cin>>num;int *a=new int[num*5];//定义数组存储运算srand(time(0));//定义时间种子int i=0;if(min<0&&j==2)min=0;x = rand()%(max-min+1)+min;//产生随机数x0 = rand()%(max-min+1)+min;y = rand()%(max-min+1)+min;y0 = rand()%(max-min+1)+min;if(m==1)z = rand()%(3-0+1)+0;if(m==2)z = rand()%(1-0+1)+0;z0 = rand()%(1-0+1)+0;//用于判断整数运算与分数运算}
    Judje(x,x0);Judje(y,y0);cout<<"序号"<<endl;n=1;Out(x,x0,y,y0,z,z0,i,j,n,m0,j0);a[0]=x;a[1]=x0;a[2]=y;a[3]=y0;a[4]=z;for(i=1;i<num;i++)//利用FOR循环进行剩余输出
    {n=i+1;n0=i*5;x = rand()%(max-min+1)+min;//产生随机数x0 = rand()%(max-min+1)+min;y = rand()%(max-min+1)+min;y0 = rand()%(max-min+1)+min;if(m==1)z = rand()%(3-0+1)+0;//运算符if(m==2)z = rand()%(1-0+1)+0;z0 = rand()%(1-0+1)+0;//用于判断整数运算与分数运算}
        Judje(x,x0);Judje(y,y0);a[n0]=x;a[n0+1]=x0;a[n0+2]=y;a[n0+3]=y0;a[n0+4]=z;if(x!=x0&&y!=y0&&x0!=1&&y0!=1){//防止出现在x=x0时输出依旧为x/x0格式以及分母为一的情况if(a[n0]!=a[n0-5]||a[n0]!=a[n0-4]||a[n0]!=a[i-3]||a[n0]!=a[n0-2]||a[n0]!=a[n0-1])//题目避免重复
            {Out(x,x0,y,y0,z,z0,i,j,n,m0,j0);}}elsei--;}cout<<"共答对"<<j0<<"道题目！"<<endl;delete []a;
}

#include<iostream>
#include<ctime>
#include<cstdlib>
using namespace std;
void Duo(int min,int max,int &answer)
{int a,b;a=rand()%(max-min+1)+min;b=rand()%(3-0+1)+0;switch(b){case 0:{answer=answer+a;cout<<"+"<<a<<")";break;}case 1:{answer=answer-a;cout<<"-"<<a<<")";break;}case 2:{answer=answer*a;cout<<"*"<<a<<")";break;}case 3:{answer=answer/a;cout<<"/"<<a<<")";break;}}}
void main()
{int answer;int min,max;srand(time(0));//定义时间种子cout<<"输入范围下界与范围上界："<<endl;cin>>min>>max;int x,w;x=rand()%(max-min+1)+min;answer=x;w=rand()%(10-1+1)+1;for(int i=1;i<=w;i++){cout<<"(";}cout<<x;for(int i=1;i<=w;i++){Duo(min,max,answer);}cout<<"="<<answer<<endl;
}