#include <stdio.h>
#include <stdlib.h>
#include <string.h>
int main()
{
int a,b;
char op;
scanf("%d%c%d",&a,&op,&b);
switch(op)
{
case '-':printf("%d\n",a-b);break;
case '+':printf("%d\n",a+b);break;
case '%':printf("%d\n",a%b);break;
case '/':printf("%2.lf\n",a*1.0/b);break;
case '*':printf("%d\n",a*b);break;
}
system("pause");
return 0;
}
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