二柱子升级版

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#include<iostream.h>
#include<stdlib.h>
#include<time.h>
void boom()
{
float x,y;
int z,t; 
int first_num,second_num,third_num,fourth_num;
srand(time(NULL));
int n;
float k;
float d;
float daan[100];
int zq=0;
int cw=0;
cout<<"需要列出多少到数学题?"<<endl;
cin>>n; 
cout<<"********************************"<<endl;
for(int i=0;i<n;i++)
{
z=rand()%4;
first_num=rand()%10;
second_num=rand()%10;
third_num=rand()%10;
fourth_num=rand()%10;
if (second_num==1)
{
x=(float)first_num;
}
else if(first_num>second_num)
{
t=first_num;
first_num=second_num;
second_num=t; 
}
x=(float)first_num/second_num;
if (fourth_num==1)
{
y=(float)third_num;
}
else if(third_num>fourth_num)
{
t=third_num;
third_num=fourth_num;
fourth_num=t; 
}
y=(float)third_num/fourth_num;
z=rand()%4;
switch(z)
{
case 0:
cout<<i+1<<"、 "<<first_num<<"/"<<second_num<<"+"<<third_num<<"/"<<fourth_num<<"="<<" ";
daan[i+1]=x+y;
break;

case 1:
cout<<i+1<<"、 "<<first_num<<"/"<<second_num<<"-"<<third_num<<"/"<<fourth_num<<"="<<" "; 
daan[i+1]=x-y;
break;
case 2:
cout<<i+1<<"、 "<<first_num<<"/"<<second_num<<"*"<<third_num<<"/"<<fourth_num<<"="<<" ";
daan[i+1]=x*y;
break;
case 3:
if(y!=0)
{
cout<<i+1<<"、 "<<first_num<<"/"<<second_num<<"÷"<<third_num<<"/"<<fourth_num<<"="<<" ";
}
else
{
i=i-1;
}
daan[i+1]=(float)x/y;
break;
}
if((i+1)%3==0)
{
for(int c=0;c<=1;c++)
{
cout<<endl;
}
}
if((i+1)==n)
{
cout<<endl;
}
}
for(i=1;i<=n;i++)
{
cout<<"请作答:"<<endl;
cout<<i<<"、";
cin>>d;
if(d==daan[i])
{
cout<<"恭喜您,回答正确!"<<endl;
cout<<endl;
zq=zq+1;
}
else
{
cout<<"回答错误,正确答案为:"<<" "<<daan[i]<<endl;
cout<<endl;
cw=cw+1;
}
}
k=(float)zq/n;
cout<<"回答正确的数量为:"<<" "<<zq<<"个"<<endl;
cout<<"回答错误的数量为:"<<" "<<cw<<"个"<<endl;
cout<<"正确率为:"<<" "<<k<<endl;
}
int main()
{
boom(); 
int c;
cout<<"要继续答题吗?(0:继续 1:退出)"<<endl;
cin>>c;
if(c==0)
{
cout<<endl;
main();
}
else
{
cout<<endl;
return 0;
}

return 0;
}技术分享图片技术分享图片

 

 



































































































































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