#include "stdio.h"
#include "stdlib.h"
#include "time.h"
main()
{
    int a,b,c,x,d,f=0,g=0;
        srand((unsigned)time(NULL));
        a=rand()%1000+1;
        b=rand()%1000+1;
        printf("请选择题目\n1.1-1000的加法运算\n2.1-1000的减法运算\n3.1-1000的乘法运算\n4.1-1000的除法运算\n5.退出答题\n");
        scanf("%d",&x);
        system("cls");
    while(g<=10)
    {
     
        if(x==1)
        {    
            d=a+b;
            printf("%d+%d=",a,b);
        
        }
        else if(x==2)
        {    
            d=a-b;
            printf("%d-%d=",a,b);
        }
        else if(x==3)
        {    
            d=a*b;
            printf("%d*%d=",a,b);
        }
        else if(x==4)
        {    
            d=a/b;
            printf("%d/%d=",a,b);
        }
        else
        {
            printf("按任意键退出！");    break;
        }
        scanf("%d",&c);
            if(c==d)
            {   
                f=f+10;
                printf("恭喜你，答对了！您的分数是%d分\n",f);
            }
            else 
            {   
                f=f-10;
                printf("很遗憾，答错了！您的分数是%d分\n",f); 
            }
            g++;
    }
}