#include <stdio.h>
#include <stdlib.h>
int main(void) 
{
	int a,b;
	char oper;
	scanf("%d %c %d",&a,&oper,&b);
	printf("請輸入運算式:");
	
	switch(oper)
	{
	   case '+':
	      printf("%d+%d=%d\n",a,b,a+b);
	      break;
	   case '-':  
		  printf("%d-%d=%d\n",a,b,a-b);
		  break;
	   case '*':
	      printf("%d*%d=%d\n",a,b,a*b);
	      break;
	   case '/':
	      printf("%d/%d=%.3f\n",a,b,(float)a/b);
	      break;
	   default:
	      printf("這三小");
	}
	return 0;
}