编写一个简单的计算器程序，输入格式为：data1 op data2。其中data1和data2是参加运算的两个数，op为运算符，它的取值只能是+、-、*、/。
 求高人解答！谢谢~

#include<stdio.h>
#include<math.h>
void main()
{
    int m=0;
    int data1,data2;
    char op;
    while(1)
    {
         printf("please input data1=");
         scanf("%d",&data1);
        printf("please input op:");
         scanf("%s",&op);
         printf("please input data2=");
         scanf("%d",&data2);
         if(op=='+')
         {
             m=data1+data2;
             printf("%d",m);
             getch();
         }
        if(op=='*')
        {
            m=data1*data2;
            printf("%d",m);
            getch();
        }
        if(op=='-')
        {
            m=data1-data2;
            printf("%d",m);
            getch();
        }
        if(op=='/')
        {
            m=data1/data2;
            printf("%d",m);
            getch();
        }
     }
}

可以根据你的要求改一下程序，原理就是这样了

#include <stdio.h>
main()
{
float data1,data2,m;
char op;
printf("Please input data1 and data2\n");
scanf("%f%c%f",&data1,&op,&data2);
switch(op)
  {
   case'+':m=data1+data2;printf("%f\n",m);break;
   case'-':m=data1-data2;printf("%f\n",m);break;
   case'*':m=data1*data2;printf("%f\n",m);break;
   case'/':m=data1/data2;
    {
      if(data2==0)printf("error!\n");
      else printf("%f\n",m)；break;
     }
   default:printf("error!\n");
  }
}
我初学C语言，也不知道写的对不对（但是能运行一些简单的）。不对的地方还请各位前辈多多指教！