#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; 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<<"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(); main();return 0;}
转载于:https://www.cnblogs.com/lzm-000/p/9886687.html
