#include <stdio.h>

int global=0;
void foo(int t);
int main()
{
  printf("in main global = %d\n", global);
  foo(0); global = 42; foo(1);
  int global = 100;
  printf("in main after dec global = %d\n",global);
  foo(2); global=10; foo(3);
  printf("in main after dec and update global = %d\n",global);
}


void foo(int t)
{
  int local = 120;
  printf("in foo(%d) global = %d, local = %d\n", t, global, local);
}