个人项目3

Posted 2021-01-16 zzy0823

#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;
}