#include<stdio.h>

int error = 0;

void judge(char flag, double *x, double *y, double *result)
{
   if(flag=='+')
           *result = *x+ *y;
   else if(flag=='-')
           *result = 1;
   else if(flag=='*')
           *result = (*x) * (*y);
   else if(flag=='/')
       {
           if(*y==0)
           {
               printf("输入格式有误\n");
               error = 1;
           }
           else
               *result = *x / *y;
       }
}

int main()
{
   double x=0.0, y=0.0, result=0, result1=0;
   int n = 1, sun=0;
   char flag;
   double z = 0.0;
   double result2 = 0;
   char flag1;

   while(1)
   {
       int ling = 0;
       error = 0;
       printf("请输入算式\n");
       scanf("%lf %c %lf", &x, &flag, &y);
       judge(flag, &x, &y, &result);

       if(error==1)
       {
           ling=0;

       }
       else
       {
           printf("%.3lf", result);
           ling=1;
       }
       result1 = result;


       scanf("%c%lf", &flag, &z);
       judge(flag, &result1, &z, &result2);
       if(error==1)
       {
           ling=0;

       }
       else
       {
           printf("%.3lf%c", result2, flag);
           ling=1;
       }
   }
   return 0;
}

三叶不是草

Scala IDE 自带的scala 包中找不到 swing的库是为什么？

1条回答

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