2014/5/14 2014/5/14

 #include<stdio.h>

#include<stdlib.h>
 
struct math
{
 
int x,y;
 
int add()
{
return (x+y);
}
int sub()
{
return (x-y);
}
};
 
int main()
{
struct math c,d;
char z;
int a,b;
while(scanf("%d %c %d",&c.x,&z,&c.y)==3)
{
if(z=='+')
{
printf("%d\n",c.add());
}
if(z=='-')
{
printf("%d\n",c.sub());
}
}
}