#include<stdio.h>
int main(){
  int val1,val2,ans;
  char type;
  switch(type){
  case +:
    ans=val1+val2;
    break;
  case -:
    ans=val1-val2;
    break;
  case *:
    ans=val1*val2;
    break;
  }
  return 0;
}

