30道四则运算题的第四次补充

/**
作者：程鹏远
题目：30道2年纪四则运算题目
*/
#include <iostream.h>
#include <stdlib.h>
#include <conio.h>
int main()
{
	//初始化
	int zong=0;
	int zong0=0;
    int a,b,c;	
	int num1,num2;
	int num;
	int chufa;
	int k,jiange;
	int zhengchu;
	int j=0;
	int chengfa;
	int con;
	int q[1000],w[1000],e[1000],r[1000];
	//请输入数的范围，中间用空格隔开：
	cout<<"请输入数的范围，中间用空格隔开：";
	cin>>num1>>num2;
	if(num1>num2)
	{
		cout<<"第一个数应该小于第二个数，请重输：";
		cin>>num1>>num2;
	
	}
	//控制题目的个数，num
	cout<<"其输入要出多少道题目：";
	cin>>num;
	
	if(num>(4*(num2-num1)^2))
	{
		cout<<"您输入的题目数量太多，会造成重复，请重新输入数目:";
		cin>>num;
	}

	//打印格式
	cout<<"一行几道题，行间距是几，中间空格：";
	cin>>k>>jiange;
	if(jiange>=5||jiange<0)
	{
		cout<<"您输入的间距太大或为负数，请重输：";
		cin>>jiange;
	}
	
	//是否要除法
	cout<<"是否要除法？是输入1，否输入0：";
	cin>>chufa;
	if(chufa==1)
	{
		cout<<"是否要有余数，是输入1，否输0：";
		cin>>zhengchu;
	}
	
	//是否要乘法
	cout<<"是否要乘法，是输入1，否输入0：";
	cin>>chengfa;

	cout<<endl;
    for(int i=0;i<num;i++)
    {	
		cout<<i+1<<"、";        
		q[i]=(rand()%(num2-num1+1))+num1;
	    
		w[i]=(rand()%(num2-num1+1))+num1;
        
		if(chufa==1)
		{
			if(chengfa==1)
			{
				c=rand()%4;//0-3
			}
			else
			{
				c=rand()%3;//0-2
			}
		}
		else
		{
			if(chengfa==1)
			{
				c=rand()%3+1;//1-3
			}
			else
			{
				c=rand()%2+1;//1-2
			}
		}

        switch (c)
        {
			case 1:
				cout<<q[i]<<"+"<<w[i]<<"="<<"\t";
				e[i]=q[i]+w[i];
				
				break;
			case 2:
				if(q[i]>w[i])
				{
					cout<<q[i]<<"-"<<w[i]<<"="<<"\t";
					e[i]=q[i]-w[i];
				}
				else
				{
					cout<<w[i]<<"-"<<q[i]<<"="<<"\t";
					e[i]=w[i]-q[i];
				}
				break;
			case 3:            
				cout<<q[i]<<"*"<<w[i]<<"="<<"\t";
				e[i]=q[i]*w[i];
				break;
			case 0://除法
				if(zhengchu==1)//有余数
				{
					if(w[i]==0)
					{
						cout<<w[i]<<"/"<<q[i]<<"="<<"\t";
						e[i]=w[i]/q[i];						
					}
					else
					{
						cout<<q[i]<<"/"<<w[i]<<"="<<"\t";
						e[i]=q[i]/w[i];
					}

					
				}
				else
				{
					while((j<100000)&&(q[i]!=0)&&(w[i]!=0)&&(q[i]%w[i]==0))
					{
						cout<<q[i]<<"/"<<w[i]<<"="<<"\t";
						e[i]=q[i]/w[i];																
						j++;
					}
					if((q[i]!=0)&&(w[i]!=0)&&(q[i]%w[i]==0))
					{
						cout<<q[i]<<"/"<<w[i]<<"="<<"\t";
						e[i]=q[i]/w[i];	
						//i++;
					}
					else
					{
						int j=0;
						while(j<100000)
						{
							q[i]=(rand()%(num2-num1+1))+num1;
							w[i]=(rand()%(num2-num1+1))+num1;
							if((q[i]!=0)&&(w[i]!=0)&&(q[i]%w[i]==0))
							{
								cout<<q[i]<<"/"<<w[i]<<"="<<"\t";
								e[i]=q[i]/w[i];	
								//i++;
								j=100000;
								j++;
							}
							else
							{
								j++;
							}
						}
					}								
				}
				break;    
		} 
		
		
		if((i+1)%k==0)
		{
			cout<<endl;
			for(int m=0;m<jiange;m++)
			{
				cout<<endl;
			}
		}
				
    }
	
	cout<<"请答题："<<endl;
	for(i=0;i<num;i++)
	{
		cout<<"题目"<<i+1<<".";
		cin>>r[i];
		if(e[i]==r[i])
		{
			cout<<"正确！"<<endl;
			zong++;
		}
		else
		{
			cout<<"错误！"<<endl;
			zong0++;
		}
	}
	cout<<endl<<"正确结果有"<<zong<<"个";
	cout<<endl<<"错误结果有"<<zong0<<"个"<<endl;
	//继续吗？
	cout<<"继续吗？是输入1，否输入0："<<endl;
	cin>>con;
	if(con==1)
	{
		cout<<endl;
		main();
	}
	else
	{
		return 0;
	}
	getch();
    return 0;
}