201306114357-实验1

#include<stdio.h>#include <stdlib.h>#include <time.h>main(){int a,b,c;float resultTrue=0,n;char op;srand(time(NULL));do{a=rand()%10+1;b=rand()%10+1;c=rand()%4+1;switch(c%4){case 0:{op='+';break;}case 1:{op='-';break;}case 2:{op='*';break;}case 3:{op='/';break;}}PRintf("%d%c%d=/n",a,op,b);switch(op){case '+':{resultTrue=a+b;break;}case '-':{resultTrue=a-b;break;}case '*':{resultTrue=a*b;break;}case '/':{resultTrue=a/b;break;}}printf("请输入正确答案(1000为结束):");scanf("%f",&n);if(n!=0){if(resultTrue!=n){printf("答案错误,答案为%d/n",resultTrue);}if(resultTrue==n){printf("答案正确/n");}}if(n==10000){return;}}while(1);}