#include<iostream>

#define HOW 10

using namespace std;

char get_oper(int n)

{

switch(n)

{

 case 0:return '+';

 case 1:return '-';

 case 2:return '*';

 case 3:return '/';

}

}

int main()

{

int num1=0,num2=0,count=0;

float user_answer=0,right_answer=0;

int operators=0; //0:+ 1:- 2:* 3:/

for(int i=1;i<=HOW;i++)

{

。

     num1=rand();

 num2=rand();

 operators=rand()%4;

 if(operators==3)num1=num2*(rand()%100);

 

 cout<<i<<":? "<<num1<<get_oper(operators)<<num2<<"=";

 cin>>user_answer;

 switch(operators)

 {

 case 0:right_answer=num1+num2;break;

 case 1:right_answer=num1-num2;break;

 case 2:right_answer=num1*num2;break;

 case 3:right_answer=num1/num2;

 }

 

 if(right_answer==user_answer)

 {

 cout<<"RIGHT"<<endl;

 count++;

 }

 else

 cout<<"WRONG"<<endl;

}

cout<<"Right:"<<count<<"? Wrong:"<<HOW-count<<""<<count<<"/"<<HOW<<"="<<count/HOW;

return 0;

}