四则运算截图and代码

1.运行截图

2.代码

#include<stdio.h>
#include<stdlib.h>
    int main()
    {
        int i=300;
        int a=0;
        while(i--)
        {
            printf("%d",rand()%100);
            a=rand()%4;
            switch(a){
                case 0:printf(" + ");break;
                case 1:printf(" - ");break;
                case 2:printf(" * ");break;
                case 3:printf(" / ");break;
                default:;
            }
            printf("%d",rand()%100);
            printf(" = ");
            printf("\n");
       }
   }