修改后的四则运算

#include<iostream.h>
#include<stdlib.h>
#include<conio.h>
void DealFenshu(int m, int a[][2])
{
for (int p = 0; p<m; p++)
{
int i=(int)rand() % 10;
int j=(int)rand() % 10;
while (j==0||i>=j)
{
i=(int)rand()%10;
j=(int)rand()%10;
}
int x=(int)rand()%10;
int y=(int)rand()%10;
while (y==0||x>= y)
{
x =(int)rand()%10;
y =(int)rand()%10;
}
int k=(int)rand()%100/25;
switch (k)
{
case 0:
cout<<"("<<i<<"/"<<j<<")" <<"+"<<"("<<x<<"/"<<y<<")"<<"=";
a[p][0]=i*y+x*j;
a[p][1]=j*y;
break;
case 1:
cout<<"("<<i<<"/"<<j<<")"<<"-"<<"("<<x<<"/"<<y<<")"<<"=";
a[p][0]=i*y-x*j;
a[p][1]=j*y;
break;
case 2:
cout<<"("<<i<<"/"<<j<<")"<<"*"<<"("<<x<<"/"<<y<<")"<<"=";
a[p][0] = i*x;
a[p][1] = j*y;
break;
case 3:
a[p][0] = i*y;
a[p][1] = j*x;
cout<<"("<<i<<"/"<<j<<")"<<"/"<<"("<<x<<"/"<<y<<")"<<"=";
}
if (p % 5 == 4)
{
cout << endl;
}
else
{
cout<<" ";
}
}
}
void DisplayFenshu(int a[][2], int w, int m)
{
if (w==1)
{
for (int q=0; q<m; q++)
{
if (a[q][0] == 0)
cout<<"0"<<" ";
else
cout << a[q][0] <<"/"<<a[q][1] <<" ";
if (q%5==4)
{
cout<<endl;
}
}
}
else
{
};
}
void DealInt(int m, int a[])
{
for (int p = 0; p<m; p++)
{
int i=(int)rand()%10;
int j=(int)rand()%10;
int k=(int)rand()%100/25;
switch (k)
{
case 0:
cout<<i<<"+"<<j<<"=";
a[p]=i+j;
break;
case 1:
cout<<i<<"-"<<j<<"=";
a[p]=i-j;
break;
case 2:
cout<<i<<"*"<<j<<"=";
a[p]=i*j;
break;
case 3:
try
{
a[p]=i/j;
cout<<i<<"/"<<j<<"=";
}
catch(...)
{
p--;
}
}
if (p%5== 4)
{
cout<<endl;
}
else
{
cout<<" ";
}
}
}
void DisplayInt(int a[], int w, int m)
{
if (w==1)
{
for (int q = 0; q<m; q++)
{
cout<<a[q] <<" ";
if (q%5==4)
{
cout<<endl;
}
}
}
else
{
};
}
void main()
{
int p;
do
{
system("cls");
int a[1000], b[1000][2];
int m, n, w;
cout<<"请输入生成的四则运算题个数：";
cin>>m;
cout<<endl;
cout<<"请输入要生成的四则运算种类(输入1为整数，否则为真分数):";
cin>>n;
cout<<endl;
if (n==1)
{
DealInt(m, a);
cout<<endl;
}
else
{
DealFenshu(m, b);
cout<<endl;
}
cout<<"是否输出答案(输入1则输出答案否则不输出答案)"<<endl;
cin>>w;
if (n==1)
{
DisplayInt(a,w,m);
}
else
{
DisplayFenshu(b,w,m);
}
cout<<endl;
cout<<"是否继续生成运算题(输入1则生成否则不生成)"<<endl;
cin>>p;
cout<<endl;
} while (1==p);
}