#include "stdafx.h"#include<iostream>#include<cstdlib>#include<ctime>using namespace std;int _tmain(int argc, _TCHAR* argv[]){ int i,score=0,xiabiao,f1,f2,f,k; char fuhao[2]={'+','-'}; //xiabiao用来决定是哪个运算符； srand(time(0)); for(i=1;i<=10;) { xiabiao=rand()%2; f1=rand()%50; f2=rand()%50; if(xiabiao==0) {f=f1+f2;} else {f=f1-f2;} if(f>=0&&f<=50) {cout<<f1<<fuhao[xiabiao]<<f2<<"="; cin>>k; if(k==f) {cout<<"你输入你的正确!"<<endl;score+=10;} else {cout<<"你输入的答案不正确!请重新输入:"<<endl; cin>>k; if(k==f) {cout<<"你输入的答案正确!"<<endl; score+=7;} else {cout<<"你输入的答案不正确!请重新输入:"<<endl; cin>>k; if(k==f) { cout<<"你输入的答案正确"<<endl; score+=5;} else {cout<<"答案不正确!正确的答案为:"<<f<<endl;} } } } i++;} cout<<"共10到题目，你的总分为:"<<score<<endl; cin.get(); cin.get(); return 0;}为啥我才能出五道题呢