#define foo1 "I am a string"


int func3(int a, int b) 
{
  int r;
  char s[100];

  switch(a) {
  case 0: r = a;
    break;
  case 1: r = b;
    break;
  case 2: r = a+b;
    break;
  case 3: r = a-b;
    break;
  case 4: r = a*b;
    break;
  default: 
    scanf("%s",s);
    strcat(s,foo1);
    r = 0;
    break;
  }
  return r;
}